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[00:17] <Willdude123> Hi. Is this the right channel for enquiring about the implications of sending a weather balloon with a camera and parachute into near-spac?
[00:18] <Willdude123> *near-space
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[00:19] <russss> Willdude123: yes, although most people are going to be asleep as it's 1am
[00:22] <Willdude123> I'll ask my questions in the morning then, night!
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[00:41] <W0OTM> can someone clear weather cache on the habhub predictor?
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[05:02] <Upu> yes it was Energizer Lithiums Laurenceb
[05:03] <Upu> with some power saving on the GPS that could be alot more
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[06:13] <X-Scale> Hey. Any idea when will be the next Red Bull Stratus launching attempt ?
[06:14] <Upu> morning
[06:14] <Upu> w/end of the 20th I think ?
[06:14] <Upu> not sure
[06:15] <X-Scale> Ah...thanks
[06:32] <costyn> morning
[06:33] <costyn> pff... rfm22b is driftier than a souped up Supra
[06:35] <Upu> lol
[06:35] <Upu> that is being worked on I think
[06:37] <costyn> tracker sitting outside in tne rain in a tupperware box now; still no gps fix
[06:37] <Upu> that with the one I sent you ?
[06:37] <costyn> yea
[06:37] <costyn> but now it's gotta be something I'm doing wrong
[06:38] <Upu> must be something else locally as I know that works
[06:38] <costyn> yea
[06:38] <Upu> sure you're not next to a GPS jammer factory testing facility ?
[06:38] <costyn> hehe
[06:39] <costyn> I'll put out my other tracker in a bit see whats up
[06:39] <costyn> and my analogue voltage meter is wonky too.. gives 3.4, 3.08, 18.8 and then starts at 3.4 again
[06:40] <costyn> and dl-fldigi keeps crashing
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[06:46] <Upu> you have ghosts in the machine
[06:48] <costyn> yes
[06:53] <costyn> heh... my old tracker just appeared on spacenear.us Altitude: 20434 m Rate: 310.5 m/s
[06:54] <costyn> omg it's making a mess on the tracker
[06:54] <costyn> testing inside = not so great
[06:58] <Upu> ah yes
[06:59] <Upu> you need something in there to stop it putting it on the tracker if the GPs doesn't have a lock
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[07:17] <costyn> in dl-fldigi?
[07:17] <costyn> I can take it offline I guess
[07:18] <costyn> orientation of the sarantel antenna doesn't really matter right?
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[07:35] <Upu> no you can put a rule on habitat so that if say sats=0 it won't post it
[07:35] <Upu> check the document for PAVA, the lock field if its not 3 it just gets ignored
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[07:59] <Lucasbuck> ive spied this on ebay : http://www.ebay.co.uk/itm/THE-ULTIMATE-PORTABLE-RADIO-YAESU-FT-817ND-/251166732208?pt=UK_Mobile_Phones_Communication_Ham_Radio_Receivers_Transceivers&hash=item3a7ab42fb0 and im quite interested in acquiring. I have one concern that the radio has been "widebanded", being a complete newb with radio, does anyone know what this is + would this affect RX from HAB freq.?
[08:04] <Lucasbuck> also another Q on gps modules :) i think im going to get the uBLOX MAX-6Q and its breakout board http://ava.upuaut.net/store/index.php?route=product/product&product_id=56 does anyone know of any antennas (with 1m or so of cable (if more i can reduce it)) that works well with this?
[08:05] <Upu> morning Lucasbuck
[08:05] <Upu> I do that board assembled with the Sarantel antenna here : http://ava.upuaut.net/store/index.php?route=product/product&path=59_60&product_id=51
[08:06] <Upu> I don't know whats meant by "wide banded", sounds dubious
[08:06] <mclane> hello Lucasbuck, look to the specs of the FT817 here: http://www.yaesu.com/downloadFile.cfm?FileID=618&FileCatID=154&FileName=FT%2D817.pdf&FileContentType=application%2Fpdf
[08:07] <mclane> according to this, the FT817 should be fine (ssb capable in the 70 cm band)
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[08:08] <mclane> it can receive FM wideband radio in the 87-108 MHz band
[08:08] <Upu> I think in this situation it might mean the bands have been extended outside of the amateur bands ?
[08:10] <Upu> http://ve5kc.amateur-radio.ca/FT-817/ft-817.html
[08:10] <Upu> see that
[08:10] <Upu> looks like a software thing
[08:11] <Upu> http://homepage.ntlworld.com/pnowland/FT-817-mods-sec-YAESU.pdf
[08:11] <Upu> or hardware
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[08:15] <number10> did you have a good holiday Upu ?
[08:15] <Upu> yup it was lovely
[08:15] <Upu> thanks
[08:15] <Upu> really enjoyed it
[08:16] <number10> which island did you go?
[08:16] <Upu> Crete
[08:16] <Upu> Chania
[08:16] <number10> ah nice - never been there, always fancied that
[08:16] <Upu> Did a walk whilst we were there too :)
[08:16] <Upu> seemed a shame not too
[08:16] <Upu> Samara Gorge
[08:17] <number10> nice - I will look it up
[08:17] <Upu> worth doing
[08:17] <Upu> http://photosynth.net/view.aspx?cid=5fe75396-a53a-4e72-820b-ef64247b1b81
[08:18] <number10> wow that looks great
[08:19] <Upu> http://photosynth.net/view.aspx?cid=86ee5268-1a57-4d9c-bcf3-3a56bd193272
[08:19] <Upu> that was the view from our balcony
[08:20] <number10> nice harbour
[08:20] <Upu> right back to reality, shopping time!
[08:20] <Upu> bbl
[08:28] <griffonbot> Received email: Chris Hillcox "[UKHAS] Re: Launch annoucement SP9UOB-2"
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[08:30] <Lucasbuck> sorry was walking dog, thanks Upu : re gps, checking that out now
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[08:57] <fsphil> hiya Lucasbuck, just curious -- is Lucasbuck your name or from an old TV show? :)
[08:58] <griffonbot> Received email: Steve Aerospace "Re: [UKHAS] LAUNCH ANNOUNCEMENT XABEN-36 (and 37!)"
[08:58] <Lucasbuck> fsphil :) yes
[08:58] <Lucasbuck> long time "nickname" from back in teh day for irc
[08:58] <Lucasbuck> and/or gaming
[08:58] <Lucasbuck> yes : meant old tv show
[08:59] <Lucasbuck> sunday brain, sorry
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[08:59] <mfa298> Lucasbuck: the 817 is a fairly decent radio for tracking with. I've got one I use out mobile. I tried a quick side by side comparison with my ts-2000 and they had similar performance.
[08:59] <fsphil> that was quite a good show, but years since I've seen it on
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[09:00] <Willdude123> Hi, I am a n00b looking into HAB, what are the radios used for, are they for tracking altitude and stuff?
[09:00] <mfa298> I don't think the widebanding has any impact on performance (mine had been widebanded by the previous owner as well)
[09:00] <jonsowman> Willdude123: please read http://ukhas.org.uk/general:beginners_guide_to_high_altitude_ballooning
[09:01] <jonsowman> and then http://ukhas.org.uk/guides:tracking_guide
[09:01] <jonsowman> then come back and ask any remaining questions
[09:02] <Willdude123> Thanks.
[09:02] <costyn> Lucasbuck: yup mine has been widebanded as well, works fine
[09:02] <jonsowman> you're welcome
[09:02] <costyn> anyone with admin access to habitat here?
[09:03] <costyn> or is that only DanielRichman, Randomskk and Darkside ?
[09:03] <jonsowman> costyn: yeah kinda, what's up?
[09:03] <jonsowman> I might not be able to help
[09:03] <jonsowman> might as well ask though
[09:03] <Randomskk> incidentally I'm around too
[09:03] <costyn> jonsowman: i accidentally uploaded some bogus tracking info to the tracker; it can be wiped out
[09:03] <costyn> ah good
[09:04] <Randomskk> if you just want some stuff removed from spacenear.us though that's easy, a lot of people can do taht
[09:04] <Randomskk> (incidentally Darkside isn't a habitat admin)
[09:04] <costyn> ok
[09:04] <jonsowman> costyn: what do you mean by 'tracking info'? you want something removed from spacenear.us?
[09:05] <Lucasbuck> cool guys, thanks for advice on radio
[09:05] <Lucasbuck> very tempted to procure
[09:06] <number10> jonsowman: did you get any new recruits to CUSF
[09:06] <jonsowman> number10: lots of interest!
[09:07] <Willdude123> So they have things like arduinios in them?
[09:07] <costyn> jonsowman: yea all HYPERION related stuff can be removed
[09:07] <number10> thats good - so it will be going for another few years hopefully
[09:07] <jonsowman> costyn: there's nothing on spacenear related to that name as far as I can see
[09:08] <costyn> jonsowman: ah, someone must've removed it already
[09:08] <costyn> jonsowman: maybe Upu
[09:08] <jonsowman> number10: we introduced a few potential projects and had at least one person interested in each, so now it's a matter of organising teams and supervisors
[09:08] <costyn> jonsowman: I just reloaded it and see it's gone
[09:08] <jonsowman> perhaps Randomskk sneakily did it
[09:09] <Randomskk> not I
[09:09] <jonsowman> mystery
[09:09] <costyn> jonsowman: on a related note, I just edited my payload doc with a post-parse filter to only update if satellites>3; do I need to do anything else to have it activated?
[09:09] <Randomskk> costyn: no, payload docs are all automatically live
[09:10] <jonsowman> the old one is redundant but just don't use it
[09:10] <costyn> Randomskk: ok thanks!
[09:11] <Willdude123> So what software is used on the microcontroller to encode all this gps data?
[09:11] <jonsowman> you write it :)
[09:11] <number10> you write that
[09:11] <number10> its part of the fun
[09:12] <Willdude123> OK, I am worried now.
[09:13] <fsphil> start by trying to make an LED blink, then work from there :)
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[09:13] <fsphil> it's not as bad as it might look to you now
[09:15] <Willdude123> So, are there standard for how to encode this stuff? Do I have to write the decoder also?
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[09:15] <fsphil> dl-fldigi will handle all the decoding
[09:15] <costyn> Willdude123: the decoding is done by a program you run on your computer, dl-fldigi
[09:16] <Willdude123> So there is there a standard way to write the encoder?
[09:17] <jonsowman> yes, it's RTTY
[09:17] <jonsowman> http://en.wikipedia.org/wiki/Radioteletype
[09:18] <costyn> RTTY is the protocol that's sent from the microcontroller to dl-fldigi, it contains the information the microcontroller sends
[09:19] <costyn> as far as programming the microcontroller, most projects are written in C for use on Arduino type microcontrollers
[09:19] <Willdude123> C?
[09:19] <costyn> and pretty much everyone has their own code, although some bits of code (GPS setup, rtty encoding) are usually copied verbatim from other projects' code.
[09:19] <Willdude123> Damn. This is much harder than I thought it would be.
[09:20] <costyn> Willdude123: I've you've never done any programming at all, it will be quite difficult
[09:20] <Willdude123> I have done a bit, but only basic python.
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[09:21] <bertrik> Has it ever been considered to use another kind of modulation (like FM) or data encoding (with forward error correction for example)?
[09:21] <jonsowman> bertrik: don't go there
[09:21] <costyn> well if you know your way around subroutines/functions, loops, variables, if then else, etc you will understand C
[09:21] <jonsowman> it has been discussed endlessly
[09:21] <costyn> bertrik: goedemorgen
[09:22] <jonsowman> the problem is that for basic telemetry and nothing else, RTTY is basically fine
[09:22] <fsphil> if we had more power I suspect FM would be quite popular
[09:22] <jonsowman> it's popular because it's simple
[09:22] <jonsowman> there have been a couple of payloads doing AFSK and being received on FM
[09:22] <bertrik> hmmm, ok, I'll shut up ... :)
[09:23] <jonsowman> which has the same effect as FSK being received as SSB
[09:23] <fsphil> the android one did that
[09:23] <jonsowman> yep
[09:23] <bertrik> hi costyn
[09:24] <jonsowman> (does that mean 'good morning' by any chance?)
[09:24] <Willdude123> So, does the radio have to specifically be compatible with the particular microcontroller?
[09:24] <jonsowman> Willdude123: there is a radio called the Radiometrix NTX2 which is very popular with HAB flights in the UK
[09:24] <costyn> jonsowman: yes, bertrik is a fellow Dutchman
[09:25] <jonsowman> Willdude123: http://ava.upuaut.net/store/index.php?route=product/product&path=71_63&product_id=61
[09:25] <jonsowman> costyn: :)
[09:25] <costyn> bertrik: didyou get an antenna for your SDR yet?
[09:25] <Willdude123> This? http://uk.farnell.com/radiometrix/ntx2-434-650-10/transmitter-434-65mhz-10mw/dp/1348829
[09:26] <jonsowman> yes
[09:26] <jonsowman> although the store I linked to is run by a UKHAS member (Upu)
[09:27] <Willdude123> Is it cheaper?, sorry this computer's parental control system blocks that site.
[09:28] <jonsowman> Willdude123: usually, yes. speak to Upu directly when it comes to ordering
[09:29] <Willdude123> Would a raspberry pi be a decent microcontroller?
[09:29] <jonsowman> no
[09:29] <jonsowman> too much power & not a real time operating system
[09:30] <bertrik> costyn: I made a coaxial folded dipole ("bazooka") that should work at 434 MHz, but I don't have a place to set it up outside
[09:30] <bertrik> I don't have a ready-made weatherproof antenna
[09:31] <bertrik> I've been thinking about building a colinear, but thinking only so far
[09:32] <bertrik> And reading a *lot* about other kinds of antennas, although I still feel I don't understand antennas yet
[09:32] <Willdude123> I don't know if I really want to do this anymore.
[09:32] <jonsowman> bertrik: antennas are magic
[09:32] <costyn> bertrik: ah yea you told me about it
[09:33] <costyn> Willdude123: it has a very steep learning curve but you will learn a lot but it will also be frustrating
[09:33] <number10> Willdude123: you gave up a little early - just think of all the neat things you could learn about
[09:33] <costyn> bertrik: I don't really understand antenna's either
[09:34] <Willdude123> I don't know C though/
[09:34] <Willdude123> *.
[09:34] <number10> leanr
[09:34] <number10> learn
[09:34] <jonsowman> it's a good and interesting learning experience
[09:34] <number10> then you have a useful skill
[09:35] <bertrik> yeah, IMO C is a very nice language to know as a basis for many other languages
[09:35] <costyn> Willdude123: I never programmed in C before I started playing with microcontrollers. I only knew Java and Perl
[09:37] <costyn> Willdude123: I suggest you buy an arduino starters kit first, play around with that and then when you're comfortable with that, come back here
[09:37] <Willdude123> OK, I will try and learn C and how to use an arduino.
[09:38] <navrac_home> willdude123 I had to learn c to do hab - there are loads of code examples to learn from and to borrow bits from - its not as bad as you think
[09:38] <costyn> Willdude123: http://proto-pic.co.uk/proto-pic-starter-kit-for-arduino-uno/ for example
[09:38] <Upu> hi there
[09:39] <Upu> hey Willdude123 don't buy an NTX2 from Farnell you can get them much cheaper from me
[09:39] <costyn> Upu: he can't load your site due to a parental filter on his PC unfortunately
[09:39] <Upu> oh odd
[09:39] <Upu> must be because its not rated or something
[09:39] <costyn> probably works with whitelists
[09:39] <costyn> likely
[09:39] <Upu> definitely no boobies on there
[09:40] <Willdude123> You are not allowed to go to this site
[09:40] <Willdude123> .You may not know it, but ava.upuaut.net is considered to be a Discussion Web site.
[09:40] <Willdude123> That is what it said.
[09:41] <costyn> it is a blog yes
[09:41] <costyn> highly dangerous for young impressionable minds :P
[09:41] <number10> just like irc
[09:41] <costyn> Willdude123: yea, how did you get onto IRC with that filter :)
[09:42] <number10> must be because it is known that this channel is full of sensible people
[09:42] <costyn> bwahaha
[09:43] <number10> .. apart from the odd exception
[09:43] <costyn> true
[09:43] <number10> but no nastyness
[09:43] <Upu> Willdude123 you need to speak to whoever does your filter and ask for an exception or its going to cost you alot more money :)
[09:44] <Willdude123> I will when I think I am skilled enough to do HAB.
[09:44] <Upu> yeah take your time have a play with an Arduino etc
[09:45] <costyn> Willdude123: shop around for a starters kit, the one I linked to might not be the cheapest
[09:45] <Willdude123> OK, thanks. What materials can I use to aid in learning C?
[09:46] <number10> you could also try and do it as a school project with your mates
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[09:46] <costyn> Willdude123: if you want to look at examples while waiting for your kit to arrive look at the tutorials and basic programs on the arduino site: http://arduino.cc/en/Tutorial/HomePage
[09:47] <Willdude123> Yeah, the thing is, I don't really have mates who really care about programming, at least not C.
[09:48] <costyn> Willdude123: maybe there's a hackerspace in your neighborhood?
[09:49] <x-f> Willdude123, just like a few others already said - i didn't know C, when i started playing with arduino, but it's quite easy (well, depends on your needs), there are a lot of examples around to borrow ideas and solutions from
[09:49] <x-f> (just don't give up so soon)
[09:49] <Willdude123> costyn: There isn't
[09:52] <costyn> Willdude123: too bad :(
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[09:59] <costyn> Upu: just tested the module with ucenter, works, so there's no gps jamming going on, ;) probably just some badly implemented (by me) code
[10:00] <Upu> super :)
[10:00] <Upu> check the other one :)
[10:00] <costyn> good poing
[10:00] <costyn> point*
[10:05] <costyn> just the occasional blue bar which then quickly goes away. no time fix though
[10:05] <costyn> 'fraid this one is going to need some TLC from you as well
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[10:07] <Upu> nps send it my way
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[10:09] <costyn> thanks will do that next week sometime
[10:11] <kokey> my ublox max6 didn't receive anything the first times I've tried it
[10:11] <kokey> but yesterday when I actually put it on the balcony on battery, txing the strings, it worked fine
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[10:12] <Upu> it does have a decoupling capacitor on it but you may be getting some noise from the power supply
[10:16] <Willdude123> Do you need to put heating equipment in the payload?
[10:16] <Upu> no
[10:16] <Upu> generally the electronics can keep themselves warm just make sure its well insulated
[10:16] <costyn> hmmm seems if (gps.encode(c))
[10:16] <costyn> never becomes true
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[10:18] <Willdude123> / @ @ \ * "Purrrfectly pleasant" *
[10:18] <Willdude123> ( > º < ) * Poppy Prinz *
[10:18] <Willdude123> `»»x««´ * (pprinz@...) *
[10:18] <Willdude123> / O \ ****************************
[10:18] <costyn> wat
[10:18] <Upu> probably best you don't post stuff like that here
[10:19] <Willdude123> Sorry, I meant it to be a pm to a bot, to see if it worked. My apologies.
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[10:20] Willdude123 (Willdude1@wikipedia/W-D) left #highaltitude ("Congrats Jimmmy!").
[10:22] <costyn> I should see the reply from the GPS on the serial as it is polled by the uC right?
[10:22] <costyn> I only see $PUBX,00*33
[10:22] <costyn> nothing from the GPS
[10:22] <John___> should i use a heater in the payload like nichrome wire
[10:22] <costyn> (i've got my ftdi hooked up to the hardware serial together with the gps)
[10:23] <navrac_home> no need to heat payloads - there is little air so theres not a lot ofcooling
[10:24] chris_99 (~chris_99@unaffiliated/chris-99/x-3062929) joined #highaltitude.
[10:24] <eroomde> http://i.imgur.com/yv7PZ.jpg
[10:24] <eroomde> gps producing bits!
[10:25] <staylo> As unintentional pastes go, that was a good one
[10:25] <Upu> John___ in short no
[10:27] <Upu> in fact quite the opposite sometimes payloads start to overheat
[10:27] <John___> so i may need a cooling fan
[10:27] <Upu> no you don't need anything
[10:27] <eroomde> to blow the non existant air around
[10:28] <Upu> just insulate the electronics and you're good
[10:28] <Upu> as Ed points out not much air to blow around up there
[10:28] <Upu> just use low power microcontrollers and you're good
[10:28] <John___> ok, for waterproof protection on electronic components should i use an eps box and how about the camera
[10:28] <Upu> i.e not a Rasperberry Pi
[10:28] <Upu> planning on landing in water ?
[10:29] <John___> nope
[10:29] <Upu> don't need to make it water proof then :)
[10:31] <John___> should i use an extra gps tracker just in case
[10:31] <Upu> well get one working and test it well
[10:31] <Upu> are you planning on using one that uses a mobile telephone ?
[10:32] <Upu> as generally they don't work above 2km
[10:32] <John___> i wanted to use ublox 6
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[10:33] <Upu> good choice
[10:33] <John___> wanted to connect to arduino
[10:33] <Upu> if you can link that to a radio you're good to go
[10:33] <Upu> are you in the UK ?
[10:33] <John___> yep
[10:34] <Upu> oh even better
[10:34] <Upu> have a read of http://ukhas.org.uk/guides:linkingarduinotontx2
[10:34] <Upu> and this if you haven't already http://ukhas.org.uk/general:beginners_guide_to_high_altitude_ballooning
[10:39] <chris_99> http://www.wired.com/playbook/2012/10/red-bull-stratos-jump-live/
[10:39] <John___> so the data sent to the dl-fdigi includes, the gps data, and other inputs like temp
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[10:39] <Upu> yeah whatever you want to send really have a read of http://ukhas.org.uk/communication:protocol
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[10:45] <fsphil> it's a nice flexible format
[10:51] <John___> so i need a radio receiver and chasing antenna connect to my laptop with the dl-fldigi
[10:52] <Upu> yes
[10:53] <chris_99> what yagi's do you guys tend to use btw for that?
[10:53] <Upu> in the car I just use a mag mount 5/8ths
[10:54] <Upu> nothing special
[10:54] <fsphil> yea a cheepy mag mount does the job
[10:54] <chris_99> 5/8th?
[10:54] <fsphil> yagi would only be useful for long range reception, or direction finding
[10:55] <John___> does the payload transmitter interfere with the gps
[10:56] <chris_99> ah something like this you mean http://www.radioworld.co.uk/catalog/mfj-1728b_meters_wave_magnet_mount_mobile_antenna_wbnc-p-4731.html ?
[10:59] <eroomde> i can see gps sats!
[10:59] <eroomde> with the hardware receiver!
[11:00] <fsphil> victory dance!
[11:00] <eroomde> totally!
[11:00] <eroomde> take that gps
[11:00] <eroomde> hardware and software now working
[11:00] <navrac_home> chris_99 that one is 2m/6m not 70cm
[11:01] <navrac_home> it could be argued a quater wave is better than a 5/8ths as the 5/8th increases sensitivity horizontally by loosing it vertically. As a chase car you are quite often underneath
[11:02] <eroomde> sure but you're closest then
[11:02] <eroomde> i'd gop more to horizon for benefit of other listeners
[11:03] <navrac_home> this is about the rx end
[11:03] <eroomde> oh i do apol
[11:03] <eroomde> i was too distracted by my gps bitsw
[11:03] <navrac_home> next step writing to the card?
[11:03] <John___> this might be a little far-fetched but what do you guys think of an infrared camera attactched to the payload, so send a heat images
[11:04] <eroomde> the sats the gpredict things are above me are the ones the pcb can see
[11:04] <navrac_home> err - feel free to put a £5k camera up.....
[11:04] <eroomde> John___: yes, flying thermal is fun
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[11:05] <eroomde> but ir gets absorbed by atmosphere so looking at ground from 30km might be a bit boring
[11:09] <John___> i wanted some ir pics from 0-1000m,
[11:09] <Adam012> Good morning!
[11:10] <eroomde> John___: fly a quadcopter or something
[11:10] <eroomde> we flew a blimp with a thermal camera for a project once
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[11:11] <Adam012> I am in the process of getting the Ublox Max6 to talk to the NXT2 via the Arduino Mini Pro. Does anyone have any code for these components? It does not matter if it is written for a custom board etc but having some code to reverse engineer would really help to speed this process up. Thank you in advance to anyone who can help!
[11:12] <navrac_home> there are code examples on the wiki for gps and the ntx
[11:12] <Adam012> Also, we now have a website: http://horizon.qmgs.walsall.sch.uk/
[11:14] <Adam012> msg navrac_home I have found code for getting both of them working e.g. serial software for the GPS and a beacon for the NTX and I have played around with that but the jump from that to getting the two working together is a big one. Is there a set of code for a tracker which I have not yet found?
[11:15] <navrac_home> well i'd offer you mine - but as others have found out its badly documented and i do things in code you really wouldnt want to do on your first launch
[11:17] <navrac_home> oh and mines for rfm22b's anyway!
[11:17] <Adam012> I don't want to just copy and drop it in. I am just looking for a basis to work from as all setups differ in the details.
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[11:17] <eroomde> Adam012: that 'big jump' is something i high recommend you attempt from a blank sheet of paper
[11:17] <eroomde> and highly highly highly recommend againt trying to copy someone elses
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[11:18] Nick change: cuddykid_ -> cuddykid
[11:18] <eroomde> even for 'inspiration' or 'to get an idea' or anything
[11:18] <eroomde> or a basis
[11:18] <eroomde> draw on a piece of paper a flow diagram of what you want
[11:18] <eroomde> go from there
[11:19] <navrac_home> basically its just a loop that polls gps, decodes the data, builds a string to send and then sends it - the bits off the wiki have all the bits in - look at http://ukhas.org.uk/communication:protocol
[11:19] <navrac_home> for code for building the string.
[11:20] <navrac_home> the rest you have
[11:22] <Adam012> Thank you for the advice. We'll sit down this week and start putting a flow chart together and then it looks like I'm going to have a very busy half term ahead of me :-)
[11:22] <Adam012> I try to do things first and then guide the pupils so that they can avoid the mistakes I made.
[11:26] <navrac_home> well once you've had a go, stick it up on pastebin and im sure one of us will look it over and point out any gotchas or shortcuts for you
[11:29] <eroomde> agreed with navrac_home. but there's so much value to just having a play with a blank sheet of paper first. it makes it easier to digest other people's advice as you have a rough mental framework
[11:30] <John___> i wanted to use a servo with the camera, so i can control the tilt of the camera
[11:30] <John___> possible?
[11:31] <eroomde> yes
[11:31] <eroomde> why wouldn't it be?
[11:31] <John___> i would think at maximum altitude, i may not be ableto control it using ntx
[11:32] <eroomde> you want to uplink commands from the ground?
[11:32] <navrac_home> no - your unlikely to get enough range to send messages up to the payload
[11:33] <John___> yes
[11:33] <navrac_home> it takes a good receiver - not an nr2 receiver to make the link
[11:33] <eroomde> depends on your uplink power
[11:33] <navrac_home> true - i was assumingunlicensed
[11:33] <eroomde> John___: uplinks are a bit complicated for beginners
[11:33] <eroomde> unless you already know what you're doing
[11:34] <eroomde> in which case you probably don;t need to ask thye question :)
[11:34] <navrac_home> go for a straight up down first
[11:35] <BrainDamage> nice double meaning
[11:36] <navrac_home> im covering till daveakes back :-)
[11:37] <eroomde> i'm sure he'll appreciate you covering his back
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[11:39] <SP9UOB> hi all
[11:39] <fsphil> hiya SP9UOB
[11:40] <SP9UOB> fsphil: hi :-)
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[11:43] <John___> for camera/video what data logging card should i use
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[11:46] <Darkside> er
[11:46] <gb73d> n e 1 watching for baumngarnter
[11:46] <Darkside> Project Horus uses GoPro HD Hero's for video
[11:46] <Darkside> usually witha 32gb ssd
[11:47] <gb73d> http://www.redbullstratos.com/live/
[11:48] <Darkside> have the actually launched yet?
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[11:48] <Darkside> bets on another wind delay?
[11:48] <John___> ok cheers for the help you guys, bye
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[12:16] <Willdude123> Hi.
[12:16] <Upu> welcome back
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[12:21] <Willdude123> How many HAB flights have you done?
[12:21] <Upu> personally about 4-5
[12:22] <Upu> well been present at
[12:22] <Upu> tracked remotely I've lost count
[12:22] <Willdude123> Have you ever lost a payload completely?
[12:22] <gb73d> 2 hours seem to have been added siince i looked this morning
[12:22] <Upu> no but I've been close
[12:22] <Upu> welcome to the future gb73d
[12:23] <gb73d> it was gonna be launch for baum at 1300bst
[12:23] <Upu> my first one landed in the sea
[12:23] <Willdude123> How did you get it back?
[12:23] <Upu> a boat :)
[12:24] <Willdude123> Expensive?
[12:24] <Upu> £100 I think
[12:24] <Upu> Have a read http://ava.upuaut.net/?p=155
[12:25] <eroomde> a few people have boat stories
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[12:26] <number10> daveake landed in the sea (wont say how many times) but the tide brought one back in - he just waited - well went for fish and chips
[12:28] <gb73d> Earliest launch 0800 MDT **Winds at 13 knots at balloon top, 10 is max** The team is optimistic for good weather conditions today.
[12:28] <gb73d> redbull stratos update
[12:28] <gb73d> 2hrs 17 mins
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[12:34] <gb73d> http://en.wikipedia.org/wiki/Project_Excelsior
[12:42] <Willdude123> So is it likely to land in the sea if I do decide to do HAB? I am not too far south.
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[12:50] <number10> you can run a prediction before launch...
[12:50] <number10> CUSF have some very good software
[12:51] <number10> so if it looks like it will land near to sea, or a built up area you postpone the launch
[12:52] <Willdude123> Does that transmitter that I was shown earlier need some form of antenna for the signal?
[12:52] <number10> sorr I wasnt watching then so dont know what transmitter it was
[12:54] <Willdude123> The Radiometrix NTX2
[12:54] <number10> you will need to make a 1/4 wave antenna -
[12:55] <number10> its quite straight forward 4 buts of wire - carefully constructed
[12:55] <number10> bit
[12:55] <number10> bits
[12:56] <Willdude123> I take it it isn't possible to send video data over radio?
[12:58] <number10> it is - a little complex for a first time project and on an ntx2 on a balloon youhave limited bandwidth so you have limitations
[12:59] <Willdude123> So, on this redd bull stratos thing, what happens if the balloon bursts before he jumps?
[13:00] <number10> I have noot looked at the capusle he is in - but if it is at high altitude he could start spinning and would not be able to stop due to lack of atmosphere
[13:00] <number10> -o
[13:03] <Willdude123> When is he jumping, can I watch it on tv?
[13:03] <number10> watch it on line - someone here posted a link
[13:03] <number10> http://www.redbullstratos.com/live/
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[13:10] <Willdude123> I wonder if ATC know he's doing it :)
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[13:14] <Dan-K2VOL> willdude, it's quite prepared for, though not even close to as prepared for as the original 1950s manned flights were
[13:14] <Willdude123> Are radar reflectors needed for HABs?
[13:14] <Dan-K2VOL> no
[13:15] <Dan-K2VOL> generally, but it depends on your local laws and how heavy your payload is
[13:16] <Dan-K2VOL> where are you willdude
[13:16] <Dan-K2VOL> and they will be working extensively with air traffic control and the FAA to launch such a large balloon in the US
[13:16] <costyn> Dan-K2VOL: he's in the UK
[13:17] <Dan-K2VOL> k
[13:19] <navrac_work> ping upu
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[13:29] <costyn> hmmm anyone ever had their ublox poll function not work? if I configure it to spit out nmea sentences by itself, it works ok, but when I try to poll it, i get no answer
[13:29] <Dan-K2VOL> sorry haven't worked with the ublox
[13:30] <costyn> at least, I do get answers, with gps.stats() I get characters, but they're not valid GPGGA sentences
[13:30] <costyn> maybe I'm using the wront TinyGPS library??
[13:31] <x-f> are you using the normal NMEA sentences or the PUBX ones?
[13:31] <costyn> pubx ones
[13:32] <costyn> http://arduiniana.org/libraries/tinygps/ <-- I guess it only eats NMEA
[13:32] <x-f> then you need a modified TinyGPS library
[13:32] <costyn> the one in the wiki isn't arduino 1.0 compatible last time I tried it
[13:33] <x-f> i can give you my PUBX-enabled version, but it's not for 1.0 either
[13:33] <Darkside> mine works on 1.0..
[13:33] <x-f> but not sure i've even tried it on 1.0
[13:34] <Darkside> hold on
[13:34] <costyn> Darkside: would be awesome
[13:34] <navrac_work> ah yes youve got the wrong library - there are three tinygps libraries, the standard one which wont work, the one for ublox that polls but uses nmea and a final one that can do pubx
[13:34] <costyn> navrac_work: now he tells me... :P
[13:34] <navrac_work> it got me too
[13:34] <Darkside> pipe2.darklomax.org/dump/TinyGPS.zip
[13:34] <costyn> Darkside: thank you thank you
[13:34] <Darkside> this one uses PUBX
[13:35] <Darkside> only
[13:35] <Darkside> i think
[13:35] <navrac_work> same fault then looked in the lib and realised there was no code to deal with ublox
[13:35] <Darkside> ffs boingboing http://boingboing.net/
[13:35] <Darkside> STOP FREAKING ME OUT
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[13:35] <costyn> Darkside: pretty creepy
[13:38] <cuddykid> https://www.dropbox.com/s/2pxbbqsr3lhx1pg/IMG_0019.JPG
[13:38] <cuddykid> yesterday's landing
[13:39] <cuddykid> rest of recovery photos - https://www.dropbox.com/sh/ws0etfo9yp3cgkc/EpMz9Dls5w
[13:42] <costyn> sigh
[13:42] <costyn> still not working
[13:43] <Willdude123> When's the stratos jump happening?
[13:43] <x-f> that's unpossible!
[13:43] <x-f> Willdude123, broadcast starts in 45 minutes (maybe this time)
[13:43] <costyn> Willdude123: http://www.redbullstratos.com/the-mission/launch-progress/ <-- check here for latest status
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[13:48] <costyn> I've hooked up the TX of the GPS to my ftdi and I see sentences appear
[13:48] <costyn> so it's answering the pubx requests
[13:49] <costyn> just tinygps isn't parsing the sentences
[13:49] <Willdude123> What is the highest that an amateur HAB has gone?
[13:50] <Darkside> 44.3km
[13:50] <Darkside> we think
[13:50] <DrLuke> haha
[13:52] <Willdude123> Have they ever crashed into planes?
[13:52] <Darkside> as far as we know, no.
[13:52] <x-f> costyn, can you get just the PUBX sentences? without parsing through the TinyGPS?
[13:53] <kokey> sending the NMEA coordinates as-is from the ublox is ok?
[13:54] <kokey> costyn: why do you want to use tinygps?
[13:54] <DrLuke> Willdude123: If they do, you're supposed to use rope that breaks at 230N parallel force
[13:54] <DrLuke> so the ballon's lines just snap in a collision
[13:54] <Darkside> all the stuff we use will do that
[13:54] <Darkside> hell, everything we use will break with FAR less than that
[13:55] <DrLuke> the only real danger is that either the capsule penetrates the wing, or some rubber from the balloon gets entangled in any control surface
[13:55] <DrLuke> but I think any payload would disintegrate before penetrating a wing
[13:55] <DrLuke> they would leave a dent at most
[13:55] <Willdude123> OK. Is it rare that payloads get destroyed by impact force, i.e. too small parachute, or if the parachute doesn't deploy, or if they forgot the parachute?
[13:56] <DrLuke> depends on how well you made your payload ;)
[13:56] <Darkside> hehe
[13:56] <Darkside> we've had a few payloads land at highish speeds (10m/s)
[13:56] <Darkside> and survive
[13:56] <Darkside> Randomskk had a payload land at 25m/s (i think)
[13:56] <Darkside> and that survived
[13:56] <DrLuke> haha
[13:56] <DrLuke> just put springs all around it
[13:56] <costyn> x-f: sure
[13:56] <costyn> kokey: dunno, isn't that what everybody uses?
[13:57] <DrLuke> or seriously: just pad everything with spongy foam inside
[13:57] <DrLuke> that should dampen the impact
[13:57] <DrLuke> and never forget the parachute
[13:58] <DrLuke> alway remember that your payload could kill someone when it comes down with terminal velocity
[13:58] <kokey> costyn: I just send some bytes and strings over serial, and read some back
[13:58] <kokey> seems to work fine for me
[13:58] <costyn> ok i might try that
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[13:59] <kokey> costyn: I used the example code for the ublox on the wiki
[13:59] <costyn> ok
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[13:59] <kokey> costyn: then I send all the stuff to make it quiet, and then for the PUBX query, and read the results into a buf
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[14:02] <Willdude123> Does the GPS give info about velocity?
[14:03] <mclane> you can at lest calculate:you have two successive positions with time stamps: v = delta x / delta t
[14:05] <x-f> uBlox in PUBX gives the vertical speed too, but i don't know how accurate it is
[14:05] <Willdude123> I presume you can write code to calculate that.
[14:06] <gb73d> www.youtube.com/watch?v=MrIxH6DToXQ&feature=g-sptl&cid=inp-hs-bul
[14:06] <gb73d> i can see a crane
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[14:07] <costyn> x-f: afaik it is pretty accurate, being calculated not from differences between 2 measured points but by measuring frequency shift/dopler of the d-band carrier signal
[14:09] <x-f> good, i'm will test it some day..
[14:09] <costyn> x-f: what will be your benchmark?
[14:09] <costyn> i mean, your calibrated device to measure it against?
[14:10] <x-f> the other way - time and altitude difference?
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[14:11] <costyn> x-f: might work :)
[14:12] <costyn> kokey: I dunno, looks kinda complex to parse that pubx string
[14:12] <costyn> why is it we use the PUBX sentences instead of the standard NMEA sentences?
[14:13] <x-f> it gives all the information in one sentence, for NMEA you have to use at least two or three, depending on your needs
[14:14] <Willdude123> Is flight data usually recorded, as well as broadcasted?
[14:14] <costyn> x-f: ok, makes sense
[14:15] <costyn> afk
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[14:17] <gb73d> theres a commentary on the baumgartner site
[14:17] <gb73d> just finished
[14:18] <cuddykid> not even "ISH" accounts for these delays :P
[14:19] <m0psi> how do they bring his balloon/gondola down?
[14:19] <cuddykid> chute
[14:19] <x-f> they've pushed it back once more..
[14:19] <m0psi> hmm pretty hit/miss then. but i guess a desert is pretty good for that
[14:21] <gb73d> next update 25 mins
[14:22] <m0psi> apparently the 700m high winds are holding them up, and they are decreasing right now. so a good chance of a launch
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[14:23] <Willdude123> Do the radios on HABs usually reach the ground at the highest point?
[14:23] <mclane> yes
[14:24] <mclane> reception over several 100 km a is possible
[14:24] <NigeyS> Willdude123, we have had them reach over 700km before
[14:25] <gb73d> bbc news mentioning the jump
[14:25] <Willdude123> Really, wow.
[14:25] <Darkside> if you're within teh radio horizon, and not attempting to receive using a potato, you'll likely hear it
[14:26] <NigeyS> lol Mark
[14:26] <Darkside> :D
[14:26] <NigeyS> but a potato with a 1/4 wave attached... :p
[14:26] <Willdude123> What if you don't get any signal?
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[14:27] <NigeyS> Willdude123, you lose telemetry
[14:28] <Willdude123> Is it worth using a backup gps device, just in case the radio connected one fails i.e. a mobile phone with tracking?
[14:28] <mclane> Willdude123:you can use a gsm/gps tracker as backup to find the payload once landed (provided that you have cell coverage)
[14:28] <mclane> Willdude123: we did that for our first flight and that helped since we have beeen quite far away when it landed
[14:29] <gb73d> Waiting for winds at 700 ft (top of balloon) to clear, before inflation can begin.
[14:29] <NigeyS> Willdude123, yup, but gsm coverage is almost non existant above 2km
[14:29] <Willdude123> Do you have to pay to launch from the ukhas site?
[14:29] <Willdude123> *How much
[14:30] <Darkside> there is no 'UKHAS' site
[14:30] <eroomde> ahem
[14:30] <eroomde> yes you do
[14:30] <Darkside> there is a CUSF site, and a EARS site, managed by different people
[14:30] <eroomde> £100
[14:30] <Willdude123> Oh, I thought I'd read there was a launch site somewhere.
[14:30] <eroomde> cheque payable to 'eroomde'
[14:30] <Willdude123> Ok.
[14:30] <NigeyS> lol Ed :p
[14:30] <Darkside> eroomde: i though it was 500 pounds last time
[14:30] <Darkside> why are you giving discount!
[14:31] <eroomde> times are hard
[14:31] <m0psi> got a link for a reasonably priced gsm/gps tracker? or is that just some simple phone running an app? if so, which one has worked at that temp?
[14:31] <NigeyS> that's just for aussies :p
[14:31] <eroomde> gotta be competitive
[14:31] <number10> how about a tin of Confit de Canard I dont have cash eroomde
[14:31] <eroomde> that'll do
[14:31] <eroomde> m0psi: most phones will be ok if you insulate them
[14:31] <Willdude123> So, isn't it just cheaper to launch yourself?
[14:31] <eroomde> m0psi: peopl have flown tellit modules before too
[14:32] <eroomde> Willdude123: we prefer to launch payloads rather than ourselves
[14:32] <Willdude123> You know what I mean :)
[14:32] <NigeyS> with the price of helium nowadays you'd have to be a billionaire to launch yourself ;)
[14:32] <eroomde> i don't actually. ;launch yourself' as opposed to what?
[14:32] <Darkside> or sponsored by red bull
[14:33] <NigeyS> Darkside, good point!
[14:34] <mclane> Willdude123: here is one (sorry, in german): http://www.pearl.de/a-PX3511-5481.shtml?query=gps
[14:34] <mclane> that one we used
[14:34] <m0psi> eroomde: tellit seems to be similar to ublox, or is it a combo?
[14:35] <eroomde> it's a combo gsm and gps
[14:35] <eroomde> but it uses sirfIII chipset
[14:35] <eroomde> which won't work at altitude
[14:35] <eroomde> i don;t know of any phones which do
[14:35] <eroomde> but then given gsm doesn't either, no biggie
[14:37] <Willdude123> OK, what is the recommended balloon size?
[14:37] <NigeyS> depends on your payload weight
[14:38] <m0psi> it seems the story is: (ublox+nt2x) for altitude tracking and telem + cheap andriod phone (for low altitude tracking, just in case)
[14:38] <Willdude123> HABing sounds so fun and so frustrating at the same time.
[14:39] <NigeyS> heh yup
[14:41] <eroomde> Willdude123: it's fun
[14:41] <eroomde> most people use balloons about 1kg in weight
[14:41] <Willdude123> How much helium is needed?
[14:41] <eroomde> and fly a payload of <500g
[14:41] <eroomde> you can work that out
[14:41] <eroomde> from the lift calculator
[14:42] <eroomde> but basically helium has a lift of approx 1kg per cubic meter and sea level pressure and temperature
[14:42] <eroomde> so if you who system weighs 1.5kg and you want 500g of lift, you need 2kg of lift total = about 2 cubic meters of helium
[14:42] <eroomde> which is a small canister like you might get from a party balloon shop
[14:43] <m0psi> eroomde: small canister like you can get from ebay? the pink one?
[14:45] <m0psi> eroomde: 2m3 at sea level temp and pressure, translates to 2m3 of inflated, stable, balloon. right?
[14:45] <number10> those disposable ones are about 0.41 CU
[14:46] <eroomde> i have no idea about your pink ones
[14:46] <number10> sorr cubic meters
[14:46] <Willdude123> When's the next launch?
[14:46] <cuddykid> begun filling!
[14:46] <Upu> link ?
[14:46] <cuddykid> http://www.redbullstratos.com/live/
[14:46] <cuddykid> Upu: how was your hol?
[14:46] <Upu> awesome
[14:46] <Upu> relaxing :)
[14:47] <gb73d> http://www.redbullstratos.com/live/
[14:47] <gb73d> INFLATING
[14:47] <m0psi> sorry, not pink canister, http://www.ebay.co.uk/itm/DISPOSABLE-HELIUM-GAS-CYLINDER-INCLUDING-50-X-9-BALLOONS-SUPPLIED-WITH-RIBBON-/200812854919?pt=UK_Home_Garden_Celebrations_Occasions_ET&hash=item2ec160fe87
[14:47] <cuddykid> Upu: excellent :)
[14:48] <MrScienceMan> i wish i had a truck full of helium
[14:48] Nick change: MrScienceMan -> RG-lz1dev
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[14:49] <number10> i think you would have to ask the shop m0psi - I suspect it will be less than 0.5
[14:50] <m0psi> ok number10, their units is 'how many balloons will it inflate'
[14:50] <number10> how big is a ballon
[14:50] <m0psi> which is scientific, somewhat :-)
[14:50] <number10> +0
[14:50] <m0psi> 9" balloon
[14:50] <number10> its not a unit of measurement
[14:50] <m0psi> so, you see, balloon are measured in linear units, of course
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[14:55] <Willdude123> What height is usually aimed for?
[14:56] <eroomde> most flights break 30km
[14:56] <eroomde> but nothing is particularly aimed for unless you're actually trying to aim for something
[14:56] <eroomde> there's been a recent fad for altitude record attempts with tiny payloads
[14:56] <eroomde> if that floats your boat, then you're basically aiming for >44km
[14:58] <cuddykid> or if you use a pawan - 23km is what you'll get :P
[14:58] <cuddykid> &when you're expected 32km :)
[14:59] <Willdude123> Pawan?
[14:59] <eroomde> dodgy make of balloons
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[14:59] <eroomde> if you're in the uk, get your balloons from Random Engineering
[14:59] <eroomde> whose details are on google or the wiki
[15:00] <hyte> what is the deal with the 2m linear maximum size with the CAA?
[15:01] <eroomde> no linear dimension in your flying system can exceed 2m
[15:01] <eroomde> if that's the case, you don't need permission to fly
[15:02] <eroomde> so basically, if it could all fit in a 2m bubble without touching the sides, it is within the size limit allowing a notam-free flight
[15:03] <hyte> ok, so if bigger it needs the form and the notam?
[15:03] <eroomde> yes
[15:04] <hyte> cool, was thinking about doing a zero pressure balloon and that would be well above 2m
[15:04] <eroomde> better find yourself a notam then!
[15:05] <Willdude123> Without specialist radios, how does one contact one's nearest ATC place?
[15:05] <Randomskk> telephone.
[15:06] <m0psi> eroomde: you mentioned a 'lift calculator', do you have a link for that please?
[15:06] <eroomde> even with specialist radios, you still use a telephone
[15:06] <eroomde> m0psi: cusf.co.uk/calc
[15:06] <m0psi> ta
[15:07] <cuddykid> ah - apparently Pawans are made out of synthetic latex
[15:08] <cuddykid> rather than natural
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[15:10] <Lunar_Lander> hello, waiting for the launch here
[15:11] <eroomde> you're launching?
[15:11] <Lunar_Lander> no, but Felix Baumgartner
[15:13] <m0psi> what determains the choice of balloon/balloon-weight? I'm looking at doing a basic flight (camera+gps/ntx2+android)
[15:13] <Randomskk> the burst calc
[15:13] <Randomskk> and your personal desires
[15:14] <Randomskk> fast ascent -> lands nearer -> less likely to hit the sea
[15:14] <m0psi> desires == success for first flight
[15:14] <Randomskk> so define success
[15:14] <eroomde> success = ???
[15:14] <Randomskk> look just buy a 1kg balloon and be happy
[15:14] <m0psi> get photos, at 30km and come back
[15:14] <eroomde> 1kg balloon, 5m/s ascent
[15:14] <m0psi> ta
[15:14] <eroomde> <1kg payload
[15:15] <m0psi> oh, i can go up to 1kg for that?!
[15:15] <eroomde> that's sort of standard normal basic safe typical adjective adjective flight
[15:15] <eroomde> well, you'll have to actually work it out rather than asking me
[15:16] <eroomde> if the predictor has you drifting into the sea, you'll probably want afaster ascent
[15:16] <eroomde> if that bursts too low, you'll probably want a bigger balloon
[15:16] <eroomde> you'll have to decide your constraints
[15:16] <m0psi> eroomde: yes, for sure, but a useful start for sure too
[15:17] <cuddykid> looks like stratos have got ideal conditions
[15:17] <eroomde> they'll wanna go quick
[15:18] <m0psi> 1000g Hwoyee are out of stock Randomskk, and the next brand is twice the price. since this is a school project, budget is tight
[15:18] <Randomskk> well then got something near 1kg
[15:18] <Randomskk> 800g? 1.2? 1.5? whatever
[15:18] <m0psi> ok
[15:18] <Randomskk> though having said that
[15:18] <Randomskk> be careful with hwoyees
[15:18] <Randomskk> you generally want a pretty decent ascent rate to avoid them floating forever
[15:18] <Randomskk> totex are much more reliable and bursting when you expect
[15:19] <gb73d> great its gogogo
[15:19] <cuddykid> Randomskk: 1000g hwoyees are reliable, seems to be the 1.2 or 1.6 that are unreliable
[15:19] <m0psi> ok, good to know, randomskk
[15:19] <Randomskk> the 1.6 are terrible
[15:19] <Randomskk> even with a 1.0 I'd be sure to keep it pretty speedy
[15:19] <eroomde> or a decently heavy payload
[15:19] <Randomskk> unreliable doesn't mean they'll all float, just that they won't all pop quickly
[15:19] <cuddykid> I've flown the 1000g before - I would go with them and a BOC T size cylinder, just pump the whole cylinder in and that'll be good for payload up to ~1kg
[15:20] <cuddykid> yep
[15:20] <eroomde> that sounds displaeasingly unscientific
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[15:21] <cuddykid> lol
[15:21] <Randomskk> eroomde: how far did you get with the python predictor?
[15:22] <cuddykid> oo - stats are live
[15:22] <Randomskk> rjw was working on a monte carlo simulation working over rms error in wind values but then realised we don't have that information anyway
[15:23] <Randomskk> but iain suggested doing it over the ascent rate and burst altitude would be more useful anyway
[15:23] <Randomskk> and it seems pleasing to take the ascent rate and burst altitude as random variables
[15:23] <Randomskk> you could even characterise them based on real ascent rate data from old flights
[15:24] <eroomde> not very
[15:24] <eroomde> i am currently with iain
[15:24] <eroomde> we're hacking gps
[15:24] <eroomde> board works
[15:24] <eroomde> can see sats
[15:24] <Randomskk> sweet
[15:24] <Randomskk> sounds good
[15:24] <eroomde> trying to get a position fix before the day is out
[15:24] <Randomskk> a fun sunday afternoon huh
[15:24] <Willdude123> When will the next launch be?
[15:24] <eroomde> http://i.imgur.com/yv7PZ.jpg
[15:25] <Randomskk> cool.
[15:26] <eroomde> can't get more than about 20s of data from it though as the Salae logic is sampling at 80mhz
[15:26] <eroomde> at that fills the buffer and it crashes after about 30s
[15:26] <Randomskk> yea fair enough
[15:26] <Randomskk> all solvable problems
[15:26] <eroomde> yep
[15:26] <DanielRichman> eroomde: billoreilly.jpg "We'll do it LIVE"
[15:27] <Randomskk> is that really the biggest balloon ever used for a manned flight?
[15:27] <Randomskk> what about zepplins and stuff?
[15:27] <gb73d> good luck felix
[15:27] <eroomde> this is the DanielRichman well yes
[15:27] <eroomde> the backup plan is cortex m4 -> ethernet
[15:27] <eroomde> hacking up and sending raw udp packets
[15:28] <Randomskk> the thing he just said about no one dared think of until now is a lie too
[15:28] <eroomde> as that way we can sample the data line on the clock edge using the spi hardware port
[15:28] <Randomskk> the US had that amazing scram from-orbit scheme
[15:28] <eroomde> rather than having to oversample both the spi clock line and data line
[15:28] <Randomskk> eroomde: ah yea, makes sense.
[15:28] <eroomde> which massively insreases the dataz
[15:29] <kokey> heh
[15:29] <Randomskk> this announcer is really annoying me
[15:29] <Randomskk> >_>
[15:29] <kokey> it would help if I don't initialise the sentence_id to 0 with each string
[15:29] <DanielRichman> eroomde: You can't have too much data
[15:30] <DanielRichman> well admittedly it depends on what the data represents
[15:30] <DanielRichman> for example, you can have too much data if data = justin beiber mp3s
[15:30] <DanielRichman> but if data = pictures of kittens or gps hacking, then more is better
[15:31] <Randomskk> "3.984ft 1.232m" seriously
[15:31] <Randomskk> do they think people who use metric all use . for the thousands separator?
[15:31] <Randomskk> wow so much tact
[15:32] <Randomskk> 6.4m/s up
[15:33] <fsphil> oh they've launched?
[15:33] <Randomskk> yea
[15:33] <cuddykid> yep - just have to hope Pawan didn't manufacture that balloon :P
[15:33] <Randomskk> at 2k now
[15:33] <fsphil> lol
[15:33] <Willdude123> Do balloons often go cross country?
[15:33] <cuddykid> Willdude123: all depends on winds
[15:33] <fsphil> now and then, sometimes even intentionally
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[15:34] <cuddykid> all part of the fun :D
[15:36] <Willdude123> Must be a bit horrible, knowing that you need to go cross country to get a payload.
[15:36] <eroomde> no.
[15:36] <Randomskk> why would that be horrible?
[15:37] <Randomskk> other countries can be great
[15:37] <Randomskk> day trip to france etc
[15:37] <fsphil> I got a nice day out in yorkshire due to a balloon going too far :)
[15:37] <cuddykid> yeah - that announcer guy is annoying
[15:37] <Randomskk> I mean even that guy who did the previous jump was like "you're on your way to space now felix" what
[15:38] <Willdude123> Whoever can guess the coordinates of where he lands nearest wins.
[15:38] <eroomde> we have a predictor
[15:38] <fsphil> whoever finds mine wins :)
[15:38] <Randomskk> not sure it has a human body descent model
[15:38] <Nickle> http://habhub.org/predict/#!/uuid=0db7353ea359241fecf7c4f14fd208a7af9a4178
[15:39] <eroomde> ah fun
[15:39] <eroomde> thanks Nickle
[15:39] <Randomskk> they are doing a pretty good job of keeping the payload in visual from ground cameras and downlinking video though
[15:39] <Nickle> If it works/ I presume he is going to come down pretty fast/
[15:40] <cuddykid> Randomskk: yep - I'm guessing they've got special permission to use certain freq and power
[15:40] <Randomskk> why are they making him read out levels from the cabin
[15:40] <Randomskk> when they already have telem downlink >_>
[15:40] <eroomde> keep him busy
[15:40] <eroomde> let him pretend he's a pilot
[15:41] <Randomskk> and why is this 80 year old walking him through everything slowly
[15:41] <cuddykid> lol
[15:41] <cuddykid> all for the cameras
[15:42] <Willdude123> How long is this gonna take?
[15:42] <Randomskk> ages
[15:42] <Randomskk> 5km now, jump at 36km
[15:42] <Randomskk> hours in between of him reading out useless numbers slowly
[15:42] <eroomde> i wonder what the e-stop button does
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[15:42] <oh7lzb> Hahaa, my 70 cm car radio + two HTs make the same beeps and blops - MotoTRBO!
[15:43] <oh7lzb> Motorola DMR rigs, AMBE codec, TDMA
[15:43] <fsphil> I hope they don't have any padding or negative sign errors
[15:43] <cuddykid> "comfort index" haha
[15:43] <Randomskk> fsphil: I assume felix can reprogram it in flight to fix them
[15:43] <Randomskk> can't imagine why else you'd send a human to do a robot's job :P
[15:43] <fsphil> aah, now that would be handy
[15:45] <RG-lz1dev> whats the ascent rate?
[15:45] <eroomde> 5.3
[15:45] <RG-lz1dev> so about another hour 15 minutes
[15:48] <cuddykid> "up to what they call float"
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[15:48] <cuddykid> well yes, that's possibly because it 'floats' then?!
[15:48] <RG-lz1dev> they have like 8 video streams
[15:48] <fsphil> fsdv
[15:50] <cuddykid> very stable
[15:51] <Nickle> Well he's above the highest I've ever been unpressurised
[15:51] <Willdude123> Why pure oxygen? Why not nitrox?
[15:52] <Randomskk> 100% oxygen apparently
[15:52] <Randomskk> does seem a slightly odd design choice. maybe they're scrubbing co2 or something.
[15:52] <eroomde> they are hoping to bump him off
[15:53] <eroomde> with a spark from wiring
[15:53] <Randomskk> that would at least make this hour long ascent more exciting
[15:53] <hyte> surely due to partial pressures so they don't have to have 1 bar
[15:53] <Randomskk> for red bull most of the is pretty low action
[15:53] <Randomskk> hyte: well yea but like it'd be super easy to just have a few nitrox canisters hooked up to the suit
[15:54] <Randomskk> maybe he needs reduced nitrogen due to pressure change
[15:54] <Randomskk> does that even matter when going from low to high?
[15:54] <hyte> if he's been breathing pure o2 for an hour there will be no nitrogen in his system in case of depresurisatrion
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[15:55] <nosebleedkt> I guess you all watch http://www.redbullstratos.com/live/
[15:55] <cuddykid> the best bit is just looking at that old man's face - priceless
[15:57] <eroomde> he looks like he's in terror
[15:57] <fsphil> that's a hell of a tracking camera they have
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[16:00] <Randomskk> ooh some actual glitches in the live video
[16:00] <fsphil> yea
[16:01] <fsphil> but overall it's excellent
[16:01] <Randomskk> did they just lose ground speed telem?
[16:01] <Randomskk> both numbers cut to - and then the box went away
[16:01] <Randomskk> and now they're not showing live video?
[16:02] <fsphil> the last clip of felix was working
[16:02] <Randomskk> interior view though :P
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[16:05] <Randomskk> also he keeps swapping between centigrade and celsius
[16:06] <cuddykid> oh - never knew he's already jumped from 97000ft
[16:06] <dongs> why do tehy keep using retarded american nits
[16:06] <dongs> units
[16:07] <dongs> just trying to make it look bigger
[16:07] <Randomskk> dongs: technically british units
[16:08] <Randomskk> :P
[16:09] <fsphil> video's very choppy now
[16:10] <fsphil> no fine now
[16:10] <fsphil> bird on the antenna :)
[16:12] <G0DJA> Feet and Fahrenheight normally known as "Imperial" metres and centigrade known as "ISO measurements
[16:12] <eroomde> they've annoyingly thought all eurpeans use '.' as a delimeter for thousands
[16:12] <eroomde> so six-thousand meters is '6.000m'
[16:12] <eroomde> which is grating
[16:13] <Randomskk> very
[16:13] <Randomskk> G0DJA: centigrade is deprecated and replaced by celsius and in any event is SI or metric
[16:13] <Randomskk> the americans call feet and so forth "british units"
[16:13] <dongs> reading off telemetry while the shit is being transmitted.
[16:14] <Randomskk> dongs: yes that is highly annoying
[16:14] <fsphil> felix sounds like he's sleepy
[16:14] <eroomde> keeps him busy
[16:14] <eroomde> pure oxygen
[16:14] <eroomde> makes you a bit light headed
[16:14] <Randomskk> 100% O2 for hours sounds like a bad idea
[16:14] <fsphil> ah
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[16:14] <Randomskk> but I guess you just open the pod bay door and you have an instant decompression chamber
[16:15] <Upu> would lol if it went "I'm sorry Felix I can't do that"
[16:16] <Randomskk> :D
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[16:17] <fsphil> ok that was an annoying announcement
[16:17] <cuddykid> those ground cameras are incredible
[16:17] <cuddykid> fsphil: yeah!
[16:17] <dongs> are we in the stratosphere yet
[16:17] <Randomskk> dongs: the edge of space, doncha know.
[16:17] <eroomde> yes
[16:18] <Upu> this is what happens when you add about 6 zeros to the end of my launch budget
[16:18] <cuddykid> lol
[16:18] <Randomskk> Upu: I like to think you'd do a better job of the units and narration :P
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[16:18] <cuddykid> we should top this with UKHAS Stratos
[16:18] <Randomskk> are you volunteering?
[16:18] <cuddykid> who's going to jump?!
[16:18] <cuddykid> no lol
[16:18] <dongs> make a tarduino jump.
[16:18] <jonsowman> I can think of a couple of candidates
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[16:18] <Upu> Should do a parody with a lego Bumgardner
[16:18] <fsphil> I'll do it ... I mean, pick the person who's jumping
[16:18] <Upu> Where's Lunar ?
[16:19] <Willdude123> What height is Felix jumping at?
[16:19] <Randomskk> why are they doing this now
[16:19] <dongs> over 90000 meters
[16:19] <cuddykid> 120,000ft
[16:19] <G0DJA> Do you think it has "harmless experiment" and "If found please call..." taped to it somewhere?
[16:19] <fsphil> 36km
[16:19] <fsphil> hah
[16:19] <eroomde> G0DJA: :)
[16:19] <eroomde> he lands in your lap
[16:20] <Upu> probably because sitting on your arse on a cold seat for 2 hours is dull Randomskk
[16:20] <cuddykid> wonder how much desert they have& wouldn't want that thing landing on your house no matter how slow it was coming down!
[16:20] <Upu> afk dog walk
[16:20] <fsphil> I'd spend the time taking pictures
[16:20] <Randomskk> napping
[16:20] <Randomskk> angry birds or something
[16:21] <SpeedEvil> bad piggies is much more appropriate
[16:21] <Randomskk> :P
[16:21] <G0DJA> In flight movie?
[16:22] <G0DJA> Watching "Plane Crash" repeats?
[16:22] <Randomskk> :D
[16:22] <dongs> who the fuck are they broadcasting this for? twitter crowd?
[16:22] <fsphil> well, yes
[16:23] <G0DJA> I guess they do need to explain for the 'average' American viewer...
[16:23] <G0DJA> I could probably find a few people who work for us that might struggle with what ballast is...
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[16:24] <dongs> nice camera
[16:25] <SpeedEvil> ballast is the average american.
[16:25] <Randomskk> so ground control were actually doing things and dropping ballast while felix continues playing simulated lab monkey?
[16:25] <NigeyS> lol SpeedEvil
[16:25] <cuddykid> BBC?!
[16:26] <cuddykid> haha
[16:26] <Randomskk> "4 weeks.. so, about a month from now"
[16:26] <fsphil> probably along with the discovery channel
[16:26] <fsphil> they co-produce a lot of stuff
[16:26] <cuddykid> bet they've got a lot of go pros on there
[16:27] <G0DJA> Someone on twitter wants to know if it's on 'normal' TV
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[16:28] <fsphil> tv is so old fasioned :)
[16:29] <x-f> looks like they've got better temp sensors than DS18B20
[16:29] <gb73d> Sky showed an animation of the flight
[16:30] <gb73d> nothing live yet
[16:30] <m0psi> joe goes through asking him a bunch of numbers (which they can see on telem), and then says "comfort index". It seems an elaborate way to 'keep felix talking and occupied', and then asking "how are you feelin mate?"
[16:30] <RG-lz1dev> there is a nice animation of the whole flight on the site
[16:30] <gb73d> ive lost tyhe live web feed
[16:30] <gb73d> servers prolly overload
[16:30] <Randomskk> oh no, the heaters are broken
[16:30] <fsphil> eek
[16:30] <Randomskk> mission control don't seem that fussed
[16:30] <G0DJA> Has anyone checked which way the shaddow of the flags are falling yet?
[16:30] <RG-lz1dev> man those guyts
[16:30] <RG-lz1dev> are on reddit
[16:30] <RG-lz1dev> i bet
[16:30] <dongs> they should turn up aircon in the mission control room
[16:31] <dongs> haha its slowing way down
[16:31] <dongs> vertical ascent
[16:31] <dongs> and its not evne halfway there
[16:31] <fsphil> I think they've muted the audio
[16:31] <dongs> right
[16:31] <dongs> so much for transparency
[16:32] <m0psi> y, they don't want to hang out dirty washing
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[16:34] <Willdude123> Is this stratos dude going higher than most unmanned HABs go?
[16:34] <dongs> capsule air pressure is dropping
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[16:35] <fsphil> the highest balloon so far is 53km
[16:35] <fsphil> highest amateur is 43km
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[16:35] <Willdude123> When is he jumping
[16:35] <Willdude123> *?
[16:35] <fsphil> this payload would be too heavy to get much higher then they're trying
[16:35] <Randomskk> still got camera visual at 20k, pretty good
[16:36] <fsphil> be hard to miss something that large though :)
[16:36] <Lunar_Lander> m0psi, on german tv some medical guy thinks that the talking is to keep felix busy and to keep him from doing strange stuff
[16:36] <eroomde> Willdude123: 36km
[16:37] <dongs> 5 minutes, nice
[16:37] <Willdude123> He's jumping in 5?
[16:37] <dongs> no the jump will last 5 minutes.
[16:37] <dongs> hes got another hour to go :(
[16:37] <G0DJA> Don't think so only at 65k ft and going to 120k ft
[16:37] <fsphil> freefall is 5 minutes
[16:38] <Randomskk> this narrator is terrible
[16:38] <Willdude123> Oh.
[16:39] <G0DJA> Also, when getting ready, I guess will take longer than 5 mins to open door and stand up even
[16:39] <Willdude123> Well he's pretty much run out of interesting stuff to say.
[16:39] <dongs> he could talk about balance some more
[16:39] <dongs> err
[16:39] <dongs> ballast
[16:40] <Willdude123> What if he chickens out?
[16:40] <dongs> how many gopros are on him
[16:40] <Upu> back from dog walk
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[16:40] <Upu> is he dead yet ?
[16:40] <fsphil> he's done a few jumps before Willdude123, unlikely
[16:40] <fsphil> no, although I'm concerned about Joe :)
[16:40] <Upu> thats who I meant
[16:41] <Upu> check lists
[16:41] <Upu> lol
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[16:41] <fsphil> hmm.. he only has one window at the top
[16:41] <Upu> "1/ Open Door"
[16:41] <Upu> "2/ Jump"
[16:41] <cuddykid> ascent has slowed considerably
[16:41] <dongs> Upu: apparently he has like 37 items
[16:41] <dongs> on checklist
[16:41] <cuddykid> lol
[16:42] <Upu> whats he meant to jump at ?
[16:42] <Upu> 36km ?
[16:42] <G0DJA> 3/ Close door - AH! I see what's wrong there...
[16:42] <cuddykid> 120,000ft
[16:42] Action: fsphil slaps cuddykid
[16:42] <Upu> yeah so about 36.5km in english
[16:43] <cuddykid> yep
[16:43] <cuddykid> haha fsphil
[16:43] <fsphil> it's bad enough from the announcer :)
[16:43] <cuddykid> yeah, blame the announcer for my ft usage
[16:43] <G0DJA> 4/ Halfway down Mission Control ask if he turned out the lights?
[16:43] <Willdude123> I think the narrator might be a little bored.
[16:44] <fsphil> wonder if they've got the heating thing sorted
[16:44] <Randomskk> fsphil: have they put back the chat channel?
[16:44] <Randomskk> if that's still mute then I'd guess no :P
[16:44] <fsphil> seems to be muted still
[16:44] <dongs> did they lose telemetry on website
[16:44] <dongs> i seeee no vertical/capsule track
[16:44] <dongs> oh there its back
[16:45] <Upu> using all the bandwidth for Felix's steely good looks, no space for daa
[16:45] <Upu> data
[16:45] <dongs> if baloon bursts, hes gonna have to go through checklist really quickly
[16:45] <Willdude123> We know. We are watching it.
[16:46] <dongs> the temperature acutally seems to be increasing?
[16:46] <dongs> it was -60 efore
[16:46] <fsphil> it gets warmer after a point
[16:47] <dongs> THATS A MIRROR
[16:47] <dongs> no really?
[16:48] <nosebleedkt> yeah i can confirm that :D xaxa
[16:48] <Upu> "thats a mirror so Felix can check his smile"
[16:48] <NigeyS> lol
[16:48] <Maroni> :)
[16:48] <RG-lz1dev> lawd
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[16:48] <G0DJA> I think he needs it to check on suit connections?
[16:49] <G0DJA> Inside pressure gone back up again
[16:49] <Randomskk> wonder if he's warmed up yet
[16:49] <dongs> droppin some more ballast
[16:50] <fsphil> so has felix probably
[16:50] <nosebleedkt> whats the ballast thing anyway?
[16:50] <nosebleedkt> they said they dropped some.
[16:50] <eroomde> dropping some more ballast
[16:50] <eroomde> sounds like a Lee Dorsey song
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[16:51] <Willdude123> What are the chances of Felix surviving?
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[16:51] <DrLuke> very slim, next ot zero
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[16:51] <DrLuke> this is a suicide mission
[16:51] <fsphil> yea he's screwed
[16:51] <kokey> what time is he supposed to jump?
[16:52] <DrLuke> whenever he made peace with himself
[16:52] <DrLuke> and his maker
[16:52] <kokey> yeah, even if he jumped at 20km he would have died
[16:52] <fsphil> ahh phew, the narrator explains the wide angle lens
[16:52] <kokey> I'm totally adding a wide angle lens to the camera module
[16:52] <kokey> see, look, the curvature of the earth
[16:53] <DrLuke> point it above the horizon
[16:53] <DrLuke> then the earth curves up
[16:53] <fsphil> the balloon looks a bit crumpled
[16:54] <gb73d> i cant see a thing neither redbull or utube will load
[16:54] <fsphil> youtube running well here
[16:54] <dongs> works fine here as well
[16:54] <G0DJA> I like the way they put the silhouette of the camera across the capsule. ;-)
[16:54] <fsphil> picture is excellent
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[16:56] <G0DJA> Cue a Tony Hancock moment and there's a tap on the glass...
[16:56] <NigeyS> so where's the aliens?
[16:58] <fsphil> that happens after he returns to earth
[16:58] <fsphil> someone notices his eyes glowing...
[16:58] <NigeyS> heh
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[16:59] <nosebleedkt> xaxaxaxaxa
[16:59] <jonsowman> thanks for that nosebleedkt
[16:59] <fsphil> now test the rest of your keyboard :)
[16:59] <jonsowman> please don't
[16:59] <DrLuke> Also, I am disappointed that red bull didn't have any cool music like spacex had
[17:00] <nosebleedkt> ?
[17:00] <fsphil> it's spinning a bit faster
[17:00] <dongs> so in case he passes out during sound barrier, do they have some remote shit to trigger his chute?
[17:01] <DrLuke> nosebleedkt: http://www.youtube.com/watch?v=0NKFtrlrOIs
[17:01] <dongs> or is it just gonna be a nice splat
[17:01] <NigeyS> whats that big red button?
[17:01] <Randomskk> the only thing I don't like about all this commercial space business is the lack of discipline
[17:01] <DrLuke> if THAT doesn't get you excited for a launch, then I don't know what does
[17:01] <Randomskk> dongs: I assume the chute has an onboard trigger anyway
[17:01] <eroomde> and peeps holding a big sheet taught on the ground
[17:02] <eroomde> no one has noticed his booboo
[17:03] <Randomskk> what happened now? I muted the audio after I couldn't take the narrator or kittinger any more
[17:03] <dongs> 111 tiny wires.
[17:03] <eroomde> the faceplate has heat or doesn't
[17:03] <eroomde> they do not know
[17:03] <tioukcom> reserve chute has an auto deployment system @ 2000m
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[17:03] <eroomde> they're trouble shooting that trying to work that out see what it is
[17:03] <Randomskk> oh wasn't that when they cut off the radio comm audio because felix started getting a bit sad about not having any heat?
[17:03] <fsphil> yea
[17:03] <dongs> haha
[17:03] <m0psi> DrLuke: i'm getting super excited for a launch for sure. I'm writing the checklist/plan document for our WASP project
[17:04] <fsphil> it's not come back on yet
[17:04] <DrLuke> nice m0psi :)
[17:04] <nosebleedkt> https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-ak-prn1/135525_3855682395367_1224371993_o.jpg
[17:04] <tioukcom> reserve @ 2000ft
[17:04] <nosebleedkt> i played a bit with the colors of my pictures
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[17:04] <nosebleedkt> can those be true colors?
[17:05] <fsphil> there are no stars, it's fake!
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[17:05] <eroomde> YOU are fake
[17:05] <nosebleedkt> god damn it beavis
[17:05] <fsphil> crap, I am
[17:05] <DrLuke> everything is fake
[17:05] <x-f> fsphil, but the horizon IS curved!
[17:05] <DrLuke> yeah duh it's a wide angle lens
[17:05] <nosebleedkt> I talk about the colors!
[17:05] <m0psi> for y'all's information: I'm hoping to get a hab done/started for a local highschool called Wedon, so: Weydon Aeronautics & Space Programme (WASP). WASP-1 will be our starter of course.
[17:06] <fsphil> that'll keep you buzzy m0psi
[17:06] <DrLuke> oh god here come the puns - do you hear them?
[17:06] <m0psi> oh dear, have I stepped on a ** nest?
[17:07] <DrLuke> I hope you're not allergic
[17:07] <fsphil> nice one
[17:07] <jonsowman> oh no
[17:07] <jonsowman> not puntime
[17:07] <DrLuke> it's pricktime
[17:08] <heathkid> I've never done a HAB launch "yet"... learning a lot right now.
[17:08] <DrLuke> yep
[17:08] <fsphil> they're good fun
[17:08] <m0psi> ditto
[17:08] <fsphil> even when things don't quite go to plan
[17:08] <DrLuke> farnell finally processed my orders after a month, so my DC-DC-converter should be done soon
[17:08] <G0DJA> I wonder if he has this on his MP3 player? http://www.youtube.com/watch?v=wwNCxjxSqrE
[17:08] <heathkid> outside temp sort of surprised me
[17:08] <m0psi> y, i've seen a temp gradient graph, very odd
[17:09] <DrLuke> G0DJA: this is better: http://www.youtube.com/watch?v=LsU8fRvTeCI :P
[17:09] <fsphil> reducing the distance to the sun ... *facepalm*
[17:09] <dongs> haha
[17:09] <heathkid> I expected it to drop that low... but not to rise back up to where it is now
[17:10] <DrLuke> well the air is very thin
[17:10] <fsphil> if he where to keep going up higher, it does get colder again
[17:10] <G0DJA> There's an English version as well DrLuke
[17:10] <fsphil> although that's higher than balloons get to
[17:10] <heathkid> seems to me like if you design the payload for 65k feet... anything above that is "easy"
[17:10] <dongs> so we're traveling up
[17:10] <m0psi> gosh i remember that being released!
[17:10] <DrLuke> yeah, but the german version is so much better
[17:10] <m0psi> how old am I!
[17:10] <DrLuke> haha
[17:10] <G0DJA> They teach you that there's a temp inversion as part of VHF propagation features
[17:11] <heathkid> being taught something and actually seeing it LIVE (well, on TV) is different
[17:11] <DrLuke> why is it so warm, is it because there's so little air which in turn gets heated up easier?
[17:11] <heathkid> I just wish they had a normal camera lens on at least ONE of the cameras
[17:11] <Lunar_Lander> DrLuke, and the ozone reaction
[17:11] <DrLuke> oh
[17:11] <m0psi> amazing to see the shape change so much
[17:12] <heathkid> slower than a rocket launch but I'm learning a LOT more too
[17:13] <DrLuke> but rockets are more fun
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[17:14] <dongs> that video will never get more views than gangnam style
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[17:14] <dongs> its just nowhere as amazing.
[17:14] <RG-lz1dev> what if he does the gangnam style before jump
[17:14] <RG-lz1dev> ?
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[17:15] <Lunar_Lander> LOL
[17:15] <fsphil> I wonder if I can get this on the big telly
[17:15] <dongs> bricks will be shat then.
[17:15] <fsphil> you mean ballast will be dropped?
[17:16] <Lunar_Lander> XD
[17:16] <fsphil> he's 3km from my personal unmanned altitude record
[17:16] <RG-lz1dev> he is 2km ffrom mine :(
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[17:17] <dongs> hecouldnt do 31337 meters
[17:18] <eroomde> i bet it bursts soon
[17:18] <clem_> Well, good luck http://news.nationalgeographic.com/news/2012/10/121005-felix-baumgartner-skydive-science-sound-barrier-joseph-kittinger/
[17:18] <Lunar_Lander> I think ballast was dropped
[17:18] <Lunar_Lander> because ascent rate suddenly was above 6 m/s
[17:18] <fsphil> 31km
[17:19] <Lucasbuck> < m0psi> amazing to see the shape change so much
[17:19] <Lucasbuck> agreeg
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[17:19] <Lucasbuck> agreed :)
[17:19] <dongs> why teh fuck isnt Laurenceb chatting
[17:19] <dongs> he's missing all the fun
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[17:19] <eroomde> dongs: i don;t think it's his idea of fun
[17:19] <dongs> http://i.imgur.com/rwiCd.jpg
[17:19] <dongs> relevant
[17:20] <dongs> eroomde: youre rpoably right. he's browsing porn instead.
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[17:21] <RG-lz1dev> i bet his internet speed is not that great up there
[17:21] <cuddykid> probably better than here lol
[17:22] <chris_99> i wonder if they're using a downlink
[17:22] <chris_99> or a satalite dish
[17:22] <dongs> downlink apparently
[17:22] <chris_99> ah
[17:22] <dongs> 2 trucks
[17:22] <RG-lz1dev> he should've done a reddit AMA while ascending
[17:22] <chris_99> why aren't we allowed to use fancy stuff like that on our balloons
[17:23] <chris_99> silly regulations
[17:23] <cuddykid> authorities :(
[17:23] <eroomde> we can
[17:23] <dongs> whats stopping you from transmitting 1080p hd of your baloon a scent
[17:23] <chris_99> from the balloon
[17:23] <chris_99> itself i mean
[17:23] <eroomde> yes it's not impossible
[17:23] <cuddykid> well - we could beam up super wifi signal
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[17:23] <chris_99> i thought regs prohibited it
[17:23] <eroomde> you can get exemptions and permissions for this kind of thing
[17:24] <chris_99> oh
[17:24] <eroomde> you just have to stop thinking 'i am a little amateur'
[17:24] <cuddykid> yep
[17:24] <Randomskk> non-operational licenses are actually not that expensive
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[17:24] <Randomskk> but you'd better really know what you are doing. ofcom don't hand them out like candy
[17:24] <Randomskk> especially for something airborne
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[17:25] <chris_99> heh
[17:25] <eroomde> we're are hoping to get many watts of power alloted for a project soon
[17:26] <NigeyS> you can have 1 watt and that's ya lot :p
[17:26] <heathkid> I sure hope they publish all the data... this is amazing and an incredible amount of knowledge (at least for me)
[17:28] <cuddykid> they don't have long to 'consider the options'
[17:28] <fsphil> 1 watt would still be a huge improvement
[17:28] <fsphil> he's just past my unmanned record
[17:28] <fsphil> why they not announce that!
[17:29] <Randomskk> fsphil: you could run your rtty with a crc16 checksum at like, 1200 baud probably!
[17:29] <NigeyS> oh aye thats still 10 times more than we normally get !
[17:29] <fsphil> oh well more than 1200
[17:29] <Randomskk> 10 times?
[17:29] <NigeyS> 100*
[17:29] <Randomskk> fsphil: I was being a bit sarcastic
[17:29] <Randomskk> you hopefully wouldn't be using rtty :P
[17:29] <tioukcom> use what you want and if they ask tell them it was a new type of powerline adapter and it was the bit of mains wire attached that caused the interference, not the radio.
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[17:29] <fsphil> you'd think that Randomskk :)
[17:29] <Randomskk> hehe
[17:30] <fsphil> my PC won't switch on
[17:30] <m0psi> would be a bit of a bummer for the faceplate to crack because it got too cold!
[17:30] <Randomskk> tioukcom: and somehow broadcast to the entire country?
[17:30] <m0psi> probably pyrex though :-)
[17:30] <fsphil> yea, ofcom's excuse for PLA noise is that it's not the PLA device transmitting, but the wires
[17:31] <fsphil> oh he's opened the window
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[17:32] <dongs> nice zoom
[17:32] <fsphil> that's one record
[17:32] <m0psi> so cool to see it bloated
[17:32] <fsphil> it's filling out nicely
[17:33] <tioukcom> Randomskk: joke
[17:33] <m0psi> !stop!
[17:33] <eroomde> just hurry up and jump
[17:33] <eroomde> i want to go out
[17:33] <NigeyS> lol
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[17:33] <GeekShadow> yo
[17:34] <GeekShadow> I suppose everyone is watching the redbull stratos or should I be kicked ?
[17:34] <jonsowman> eroomde: yeah same
[17:34] <dongs> http://gyazo.com/5c72d651111d61d7428af50fa8fac863.png
[17:34] <jonsowman> i've got a dinner reservation
[17:34] <jonsowman> :|
[17:34] <RG-lz1dev> http://aprs.fi/#!call=a%2FSTRTOS-11&timerange=10800
[17:34] <fsphil> nooo
[17:35] <eroomde> i'm going to franco manca
[17:35] <kokey> oh can't update code on my payload when it's out on the balcony
[17:35] <eroomde> with iain
[17:35] <jonsowman> eroomde: nice
[17:35] <jonsowman> brb
[17:35] <fsphil> youtube buffering
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[17:36] <costyn> meh my livestream isn't working
[17:36] <tioukcom> strange how old fashioned TV doesn't do that
[17:36] <fsphil> video's working really well now
[17:36] <G0DJA> Have they sorted the faceplate heater issue?
[17:36] <m0psi> apparently not
[17:36] <griffonbot> @PD3EM: Still 10 km to go to beat the #UKHAS #HAB world record ;-) #redbull #stratos #livejump [http://twitter.com/PD3EM/status/257535420437495809]
[17:36] <m0psi> still working on faceplate issue
[17:36] <costyn> hehe
[17:37] <RG-lz1dev> showoff
[17:37] <fsphil> I don't think there's much work they can do with that
[17:37] <RG-lz1dev> yeah, he should just take it off
[17:37] <RG-lz1dev> and be a man
[17:37] <m0psi> take a deep breath, and GO!
[17:37] <costyn> whee it works
[17:38] <bertrik> (in a high pitched voice)
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[17:38] <dongs> well hes at 36km
[17:38] <dongs> he need to start jumping soon.
[17:39] <eroomde> james (my boss) has just started playing 'jump! (for my love)' over the speakers
[17:39] <pericynthion> Is it 120k ft that he's jumping from?
[17:39] <costyn> what's the planned exit alt?
[17:39] <eroomde> we're all ina hurry
[17:39] <x-f> ascent speed up to 8 m/s now
[17:39] <costyn> eroomde: thank god it's not Jump by Van Halen
[17:39] <G0DJA> Did they dump some more ballast? He's going up faster than a few mins ago
[17:39] <DrLuke> why is the ground color changing so abruptly? http://i.imgur.com/jCtRW.png
[17:39] <DrLuke> it looks like google earth
[17:39] <costyn> eroomde: it's been used *SO* many times on tandem videos
[17:40] <dongs> DrLuke: layers of air?
[17:40] <pericynthion> agriculture
[17:40] <x-f> G0DJA, yeah, it was down to 2 m/s just few minutes ago
[17:40] <eroomde> yo henry
[17:40] <DrLuke> oh
[17:40] <DrLuke> makes sense
[17:40] <G0DJA> Even the white blotches on Google Earth
[17:40] <pericynthion> hey Ed, how's liff?
[17:40] <eroomde> nice this time of year, i hear
[17:41] <eroomde> wiaiting foer this dude to jump so i can head south in the car
[17:41] <eroomde> and yours?
[17:41] <pericynthion> not bad
[17:41] <G0DJA> Have we got a chase car plot on spacenear.us?
[17:41] <pericynthion> designing radios for nanosats, as you do
[17:41] <m0psi> rising at 6m/s, why should it just slow right down at 125k ft?
[17:41] <eroomde> oh nice
[17:41] <eroomde> work or play?
[17:41] <pericynthion> work
[17:41] <eroomde> or study
[17:42] <eroomde> are you doing the same thing as before or have you moved?
[17:42] <pericynthion> not sure when we last spoke.. but I'm living in Berkeley and working in S.F.
[17:42] <costyn> "egress checklist"
[17:42] <pericynthion> 1. Open door, 2. Jump out
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[17:43] <clem_> Will he?
[17:43] <eroomde> pericynthion: for swift?
[17:43] <eroomde> i think it was when we last spoke
[17:43] <costyn> pericynthion: haha exactly
[17:43] <G0DJA> Slowing
[17:43] <Randomskk> still got decent visual on that balloon
[17:43] <G0DJA> Float!
[17:43] <Randomskk> crazy zoom lenses
[17:43] <G0DJA> Sorry :-)
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[17:43] <fsphil> that was a quick float
[17:43] <pericynthion> eroomde: ah, no, but doing some collobration with Swift (which has moved HQ to Saigon)
[17:43] <eroomde> blimey
[17:44] <fsphil> oh it's still rising
[17:44] <eroomde> f travelling?
[17:44] <gb73d> ah got the pic back
[17:44] <dongs> looks like hes ready to go
[17:44] <pericynthion> his visa ran out and the lawyer screwed up renewing it in time
[17:44] <eroomde> oh bugger
[17:44] <pericynthion> so he has to be out of the US for a year or so
[17:44] <eroomde> so some enforced travel
[17:44] <eroomde> well, not bad really if you have no choice
[17:44] <fsphil> the Stig wouldn't bother will all these checklists
[17:45] <pericynthion> is this a zero pressure or a super pressure?
[17:45] <fsphil> rising faster now
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[17:45] <cuddykid> wow
[17:46] <G0DJA> Back up to over 7m/s upwards again!
[17:46] <pericynthion> yeah maybe the weight of that oxygen helped
[17:46] <eroomde> shit me that's fast
[17:46] <dongs> 10m/sec?
[17:46] <dongs> wtf
[17:46] <fsphil> 38km
[17:46] <cuddykid> and burst& lol
[17:46] <hyte> have they dumped the ballast?
[17:46] <NigeyS> blimey aint seen that speed since picochu 4 lol
[17:46] <fsphil> lol
[17:46] <cuddykid> haha
[17:46] <costyn> haha
[17:46] <NigeyS> that thunderstorm was great!
[17:46] <pericynthion> stop the ascent bah, they should go for 40km
[17:46] <eroomde> aint seen that speed since a 15kg filled balloon broke out of the fill rig as i was holding it
[17:46] <gb73d> they better open the valve quick
[17:46] <eroomde> which pericynthion probably remembers too
[17:47] <gb73d> its close to bursting
[17:47] <NigeyS> lol Ed wasnt that a few years back ?
[17:47] <costyn> woa...they have Joe Kittinger there in the control room
[17:47] <pericynthion> indeed
[17:47] <costyn> how cool is that
[17:47] <eroomde> NigeyS: yes
[17:47] <fsphil> that balloon looks stressed
[17:48] <NigeyS> football!
[17:48] <costyn> good god its huge :)
[17:48] <fsphil> slowed well down now
[17:48] <hyte> surely they can measure balloon and atmosphere realative presure? or did they spend all the money on a tv link?
[17:48] <x-f> it's a superpressure balloon?
[17:49] <dongs> oh fuck is he gonna read him off a fuckign checklist
[17:49] <Maroni> mirror
[17:49] <pericynthion> in the typical tradition of launch announcers, voiceover guy is three steps behind everyone else
[17:49] <dongs> its right here in front of his face
[17:49] <Randomskk> felix is being a bit quiet
[17:49] <costyn> "i need you to respond"
[17:49] <costyn> he's going into hypoxia
[17:49] <RG-lz1dev> i'd be dropping ballast right now
[17:50] <pericynthion> like on falcon 9 when the PAO guy said "All 9 engines operating nominally", a full minute after one of them had exploded
[17:50] <costyn> conventional skydiver alti on his left arm
[17:50] <dongs> hey its falling
[17:50] <fsphil> it's descending a bit
[17:50] <fsphil> 1m/s
[17:50] <DrLuke> youtube is awful at streaming
[17:50] <DrLuke> it keeps buffering
[17:50] <fsphil> -1m/s even
[17:50] <dongs> ive not had a single buffer
[17:50] <fsphil> did that here earlier DrLuke, but working well now
[17:50] <costyn> DrLuke: working ok here
[17:50] <dongs> since i started watching 3 hours ago
[17:50] <dongs> get nonshtity internet bro
[17:50] <DrLuke> it worked all the time
[17:50] <DrLuke> but now everybody starts watching
[17:50] <fsphil> hurry up Felix, I need to eat :)
[17:51] <costyn> fsphil: hehe
[17:51] Action: costyn is eating tasty lasanga
[17:51] <costyn> goodness... RB must have had to dig deep into their deep pockets to fund this
[17:51] <pericynthion> aw, nobody's scraping the webpage and streaming to spacenear.us?
[17:51] <costyn> nice CYPRES advertising there in the control room
[17:52] <costyn> (automatic activation device)
[17:52] <costyn> pericynthion: that'd be a good idea :)
[17:52] <oh7lzb> Might have a custom firmware for the cypres
[17:53] <costyn> oh7lzb: probably
[17:53] <dongs> -10C outside
[17:53] <dongs> not bad at all
[17:53] <dongs> thats like alaska temps
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[17:53] <costyn> oh7lzb: I don't remember what normal max ceiling is for a standard cypres
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[17:53] <costyn> dongs: it's gonna get colder on the way down
[17:54] <dongs> i noticed
[17:54] <pericynthion> eroomde: still at Vorticity?
[17:54] <oh7lzb> costyn: probably mentioned in the manual. Never saw the manual at the club when I did that stuff.
[17:54] <costyn> meh... wide angle distortion
[17:55] <costyn> oh7lzb: hehe i recently quit so I should know :)
[17:55] <eroomde> pericynthion: oh no
[17:55] <eroomde> left at christmas
[17:55] <costyn> looks like Felix is a lot more comfortable than Joe was in his gondola
[17:56] <NigeyS> eroomde, what kinda chute would be on that capsule ?
[17:56] <eroomde> dunno
[17:56] <dongs> hisssssssssssss
[17:56] <costyn> i'd be really impressed if they have a livestream from his body on the way down
[17:57] <costyn> not body as in "body" of course :P
[17:57] <dongs> it might be a body after the first 30 seconds
[17:57] <dongs> if he doesnt survive the mach
[17:57] <clem_> do you mean, his "corpse" ?
[17:57] <pericynthion> NigeyS: my uneducated guess is it's probably a pretty ordinary chute as used for dropping heavy military things from aeroplanes
[17:57] <NigeyS> ahh right, tnx pericynthion
[17:57] <costyn> dongs: we're in the 21st century, I think they've got pretty much all aspects covered
[17:58] <fsphil> I like his seat
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[17:59] <costyn> depressurize from 0.2 bar to 0 bar
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[17:59] <costyn> not that exciting I'd think
[17:59] <fsphil> no pressure
[17:59] <eroomde> lol
[17:59] <costyn> they're most of the way there from 1 bar already
[17:59] <pericynthion> well you can breathe with 100% oxygen at 0.2 bar
[18:00] <pericynthion> not at 0
[18:00] <fsphil> well you can't have 100% oxygen at 0 bar
[18:00] <costyn> 39K... not bad
[18:00] <dongs> dumping all that air made the cabin go up
[18:00] <fsphil> ascent has speeded up again
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[18:01] <eroomde> dongs: and/or adiabatic recovery
[18:01] <costyn> uat... delayed audio?
[18:01] <costyn> why does the controlroom dude say he's at 100Kft
[18:01] <pericynthion> cabin pressure "altitude"
[18:01] <Randomskk> costyn: internal cabin pressure altitude equivilent
[18:02] <Randomskk> oh noooo food time
[18:02] <costyn> pericynthion: aaah :) thanks
[18:02] <fsphil> I'm wasting away
[18:02] <pericynthion> i'm surprised that low of a pressure difference is enough to keep the door shut, though
[18:03] <NigeyS> cake!
[18:03] <fsphil> it's a lie!
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[18:03] <jarod> http://www.youtube.com/user/redbull high :)
[18:04] <dongs> o shit
[18:04] <x-f> wow
[18:04] <costyn> that's hardcore, going headdown at 35K
[18:04] <fsphil> was that dust?
[18:04] <fsphil> or ice?
[18:04] <costyn> woaa... nice
[18:04] <clem_> yayyy
[18:04] <G0DJA> Door open
[18:04] <dongs> oshit
[18:04] Action: costyn only slightly jealous
[18:05] <NigeyS> shut the dam door its cold in here !
[18:05] <dongs> release seat belt
[18:05] <dongs> he's like "can i stop now"
[18:05] <costyn> dongs: hehehe indeed
[18:05] <dongs> "i dont like heights"
[18:05] <bertrik> youtube frozen here
[18:06] <costyn> "your parachutes are not deployed" I lolled
[18:06] <dongs> youtube works here
[18:06] <eroomde> bricking himself
[18:06] <NigeyS> lol
[18:06] <costyn> eroomde: yea
[18:06] <fsphil> looks like
[18:06] <clem_> I hold my breath for some reason...
[18:06] <x-f> NigeyS, last data was above zero temps
[18:07] <NigeyS> yey for buffertube
[18:07] <costyn> he's enjoying the view
[18:07] <costyn> or hypoxic
[18:07] <costyn> god... it's a straightjacker
[18:07] <fsphil> he pressed the button
[18:07] <costyn> jacket
[18:07] <dongs> oh shit, he already jumped long time ago
[18:07] <dongs> youtube is way delayed
[18:07] <Maroni> camera has its difficulties
[18:08] <fsphil> wow
[18:08] <clem_> holy shit
[18:08] <costyn> niiiiiiiiice
[18:08] <x-f> "i'm really high"
[18:08] <NigeyS> crazyness
[18:08] <costyn> it's so quiet,... no noise through his mike except for breathing
[18:08] <fsphil> he's tumbling
[18:09] <fsphil> really fast
[18:09] <costyn> that's a spin right there
[18:09] <pericynthion> that's quite the tumble
[18:09] <fsphil> oh nice recovery
[18:09] <costyn> niiiiiice
[18:09] <costyn> that's hard to get out of
[18:09] <clem_> woohoo
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[18:09] <x-f> stabilised
[18:10] <clem_> did he exceed the speed of sound?
[18:10] <SpeedEvil> boom!
[18:11] <fsphil> very much so clem_
[18:11] <pericynthion> they claimed 729mph "estimated speed" which is definitely supersonic but I guess they'll need to review data to be sure
[18:11] <costyn> clem_: think so
[18:11] <Randomskk> 729mph isn't definitely supersonic is it?
[18:11] <costyn> impressed with the camera operator :)
[18:11] <fsphil> he's sounding better now
[18:11] <x-f> "Feels like I am about to pass out"?
[18:11] <Randomskk> I mean depends on local air temp but at ground level it's 760 ish
[18:11] <G0DJA> Wow
[18:11] <fsphil> foggy viser
[18:11] <costyn> visor is fogging up
[18:12] <zyp> like hell
[18:12] <costyn> sucks... such a nice view there
[18:12] <fsphil> or*
[18:12] <pericynthion> Randomskk: hm, good point
[18:12] <fsphil> holy chute
[18:12] <costyn> that was quick
[18:12] <costyn> didn't beat Kittinger
[18:12] <G0DJA> Shute deployed
[18:13] <fsphil> still seems to be communications problem
[18:13] <fsphil> +s
[18:14] <Randomskk> he is not very talkative
[18:14] <costyn> 6000ft already
[18:14] <hyte> kittinger wasn't freefall as he had a drogue shoot during "freefall" his record could be revised
[18:14] <RG-lz1dev> http://www.youtube.com/watch?v=1lWJXDG2i0A
[18:14] <Randomskk> so he didn't go supersonic nor beat the freefall record?
[18:14] <RG-lz1dev> song to go with the stream
[18:14] <G0DJA> The GPS has lost lock?
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[18:15] <hyte> i think he probably fell further than kittinger, just not longer duration
[18:15] <Randomskk> yea he has highest jump
[18:15] <Randomskk> should have waited longer? :P
[18:15] <pericynthion> nice helicopter shot
[18:15] <Randomskk> I wanna see the balloon go up and pop :P
[18:15] <ms7821> surely shorter duration and higher => faster?
[18:15] <costyn> gonna take a while to come down, another 5 6 minutes
[18:15] <Randomskk> ms7821: mreh probably terminal velocity
[18:16] <fsphil> so I imagine the capsule is still up there
[18:16] <costyn> pericynthion: yea nice helicopter steadycam
[18:16] <Randomskk> uhm
[18:16] <Randomskk> shrug
[18:16] <Randomskk> lol so unprofessional on the radio
[18:16] <fsphil> lol, they keep giving him wrong data
[18:16] <costyn> yea
[18:17] <fsphil> nooo youtube don't stop now
[18:17] <costyn> that was quick
[18:17] <ms7821> I assume the higher you are the higher terminal velocity is, so you've got a better chance of breaking the limit
[18:17] <gb73d> hes okn thank god
[18:17] <Randomskk> wow, they got to him fast
[18:17] <ms7821> though I suppose speed of sound is higher in lower air pressure
[18:18] <fsphil> attacked by a camera man
[18:18] <Randomskk> yea, using "speed of sound" as a target/record seems a bit weird
[18:18] <Randomskk> seeing as it changes depending on altitude
[18:18] <Randomskk> capsule down on chute, nice
[18:18] <G0DJA> I may even buy my 1st can of Red Bull tomorrow :-)
[18:18] <costyn> then the capsule lands on top of him </sad ending>
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[18:19] <clem_> haha
[18:19] <ms7821> actually, given terminal velocity, the only way to get a sonic boom by freefall is to plunge into higher density air
[18:19] <G0DJA> What do you bet the interviewer is asking "So, how do you feel?"...
[18:19] <Willdude123> Was this right? http://habhub.org/predict/#!/uuid=0db7353ea359241fecf7c4f14fd208a7af9a4178
[18:19] <ms7821> someone must have run the maths
[18:19] <Randomskk> ms7821: aren't you continuously plunging into higher density air?
[18:19] <fsphil> capsule is descending did I just hear?
[18:20] <Randomskk> yea it's on video
[18:20] <Randomskk> by chute
[18:20] <Randomskk> separated from balloon
[18:20] <fsphil> ah there it is
[18:20] <fsphil> my video is really choppy
[18:20] <Randomskk> wonder if they plan to recover the balloon remnants
[18:20] <ms7821> Randomskk: yeah, but I dunno whether it's enough. 10 years ago I could have worked this out myself
[18:20] <Randomskk> got cars to him too
[18:20] <Randomskk> ms7821: yea in theory I should probably be able to work this out myself :P
[18:21] <costyn> well good someone finally got around to doing it... there have been 4 or 5 people wanting to do this for many years
[18:21] <ms7821> submit it to xkcd what-if
[18:21] <costyn> ms7821: good idea
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[18:21] <heathkid> *WOW!*
[18:21] <fsphil> lol, guy nearly trips on chute
[18:21] <Randomskk> I'm not entirely convinced by the "enable high altitude bailout from spacecraft"
[18:22] <Randomskk> orbitcal velocity is kinda a bit of speed
[18:22] <Randomskk> orbital
[18:22] <pericynthion> Randomskk: read about MOOSE
[18:22] <Randomskk> I have
[18:22] <Randomskk> it's amazing
[18:22] <Randomskk> and predates this by some time :P
[18:22] <Willdude123> Any news of the exact place he landed?
[18:22] <m0psi> wow! what a ride!
[18:22] <Randomskk> would have loved to test MOOSE
[18:22] <DrLuke> that view
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[18:22] <Randomskk> that'd be much more hardcore than this :P
[18:22] <DrLuke> when he stood on the edge
[18:22] <fsphil> sucky music
[18:22] <x-f> yup
[18:23] <costyn> yea
[18:23] <m0psi> so, what was the speed?
[18:23] <fsphil> ah, just spotted your alien NigeyS
[18:23] <m0psi> 719mph?
[18:23] <pericynthion> there has been talk about spacediving from suborbital tourist rockets (Virgin Galactic etc), 100km
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[18:23] <costyn> sooo... wonder how he'll top this stunt
[18:23] <heathkid> now *THAT* was "One giant leap..."
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[18:24] <fsphil> they forgot to turn off the mic
[18:24] <kokey> hope this doesn't give the guys on board the ISS some ideas
[18:24] <costyn> heheh yea
[18:24] <fsphil> aah, they did
[18:24] <dongs> shit's over
[18:24] <dongs> bbl
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[18:24] <x-f> heathkid, sadly not for the mankind
[18:24] <costyn> looked like that last shot of the capsule had the balloon remnants in the background
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[18:24] <fsphil> so it turns out red bull does *not* give you wings, but they might give you a giant balloon and a parachute
[18:25] <kokey> that said what he did wasn't much different from a soyuz reentry
[18:25] <costyn> fsphil: if they like you VERY VERY much :)
[18:25] <heathkid> kokey: but without the soyuz
[18:25] <fsphil> yes
[18:25] <fsphil> right, food time!!
[18:25] <costyn> fsphil: enjoy
[18:25] <pericynthion> eroomde: so where are you occupied now?
[18:25] <heathkid> I just really hope they publish all th edata
[18:26] <heathkid> altitude, pressure, and temp all the way up...
[18:26] <heathkid> and windspeed would be nice (it was interesting)
[18:27] <costyn> bwhaaha lots of funny comments on facebook; "record for highest opneing?" "felix, collapse your slider, it's flapping"
[18:27] <X-Scale> What's the current record high for an ammateur ballon ?
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[18:28] <Upu> X-Scale 44379m by Mick Cain
[18:28] <X-Scale> wow
[18:28] <Upu> http://ukhas.org.uk/general:uk_records
[18:28] <Upu> tbh UK records are the world records
[18:28] <X-Scale> Thanks
[18:29] <Upu> the "world" records are at http://www.arhab.org
[18:29] <Upu> but in the top 10 8 are UK launches
[18:30] <costyn> can't wait to see the footage from his point of view
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[18:31] <cuddykid> media are all over this with their usual bollocks - "Skydiver makes world record jump from SPACE"
[18:31] <cuddykid> that's going to be good costyn
[18:31] <costyn> cuddykid: yea... knownign skydivers he probably had at least 10 gopro's attached to him
[18:32] <cuddykid> yeah, he did have quite a few go pros :)
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[18:34] <costyn> heheh the guy that has the freefall record of 9 minutes something (in a wingsuit) flew horizontally what Felix just covered vertically
[18:36] <gb73d> i think the soundbarrier sent him into a spin
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[18:36] <gb73d> his visor fogged
[18:36] <gb73d> it was a vicious spin
[18:37] <gb73d> he could have blacked out
[18:37] <Lunar_Lander> HE MADE IT
[18:37] <SpeedEvil> and come to in a land of talking monkeys.
[18:37] <SpeedEvil> wait...
[18:38] <costyn> Lunar_Lander: you're late to the party
[18:38] <Upu> he's always late when there is a balloon up
[18:38] <gb73d> i got a good rec on bbc news
[18:38] <costyn> gb73d: yes, but he managed to stop the spin, which is quite a feat considering he had so little air to work with
[18:38] <gb73d> yes that was critical
[18:39] <gb73d> kittenger jumped out on his back
[18:39] <gb73d> might be better way
[18:39] <Lunar_Lander> I was watching on N-TV
[18:40] <gb73d> the german channel yer
[18:41] <Lunar_Lander> he did 3 out of 4 records
[18:41] <Lunar_Lander> altitude, jump altitude, speed
[18:41] <X-Scale> I feared that full body uncontrolled spinning.
[18:41] <Lunar_Lander> but the chute came out 17 seconds too early
[18:41] <Lunar_Lander> yea
[18:41] <costyn> Lunar_Lander: freefall stands at 9 minutes, so no way he could've got that
[18:41] <gb73d> well he saved his life
[18:42] <costyn> 6000ft is high and safe... could've gone down to 4
[18:42] <DrLuke> shouldn't technically whoever has been the longest in space get the freefall record?
[18:42] <DrLuke> how is freefall defined
[18:42] <Randomskk> :P
[18:42] <costyn> hehehehe
[18:43] <DrLuke> it should be called freefall through the athmosphere or something
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[18:45] <SpeedEvil> but it's not.
[18:45] <SpeedEvil> it's not even much under 1g for long
[18:45] <SpeedEvil> and it stops being microgravity a few seconds in.
[18:47] <Lunar_Lander> best thing was like that someone asked on twitter what he could say at the jump
[18:47] <Lunar_Lander> and if the translation was right
[18:47] <Lunar_Lander> he said
[18:47] <Lunar_Lander> "Ah it's a little world. Now I am coming back to you little world"
[18:47] <Lunar_Lander> XD
[18:47] <costyn> Lunar_Lander: heheh nice
[18:48] <fsphil> aaah that's better
[18:48] <costyn> Lunar_Lander: I've always thought the guy was an arrogant git, but this was pretty cool
[18:48] <heathkid> has anyone seen or heard if he definitely broke MACH?
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[18:49] <heathkid> regarding if he's arrogant... he jumped out at 128k feet. He's earned it... let him be arrogant.
[18:50] <costyn> heathkid: yea but with his earlier stunts and stuff
[18:50] <Lunar_Lander> heathkid, the screen said that the speed of sound thing still awaits verification
[18:50] <fsphil> I would be surprised if he didn't
[18:52] <Lunar_Lander> yeah, the speedometer swept past 1100 km/h
[18:52] <Lunar_Lander> that is pretty certain I think
[18:53] <heathkid> depends on his altitude at the time though
[18:53] <Lunar_Lander> yeah
[18:54] <X-Scale> I remember seeing at least 1176 km/h
[18:54] <heathkid> but he did go from a very nice fall to an *extreme* spin... back to controlled decent. So somthing happened (in my opinion)
[18:54] <Lunar_Lander> yeah
[18:54] <fsphil> he regained control very quickly
[18:54] <Lunar_Lander> I would love to see the onboard cameras
[18:54] <heathkid> me too
[18:54] <fsphil> I do wonder if he was doing OK just before he got out, he seemed very slow to respond
[18:55] <fsphil> so how long before your jump Lunar_Lander?
[18:55] <heathkid> I'm *guessing* he was doing OK then hit MACH and lost it... fell under MACH and regained control.
[18:55] <costyn> fsphil: yea he did sleep slow, but I can't imagine he was hypoxic, they would've had systems to monitor that
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[18:55] <Lunar_Lander> fsphil, XD
[18:55] <costyn> heathkid: would he have noticed going through mach?
[18:55] <fsphil> I doubt they would have announced it though costyn
[18:56] <heathkid> costyn: I've never done it so I don't know
[18:56] <costyn> fsphil: true, but they would've aborted the jump. hypoxia is like being drunk, not good for skydives from 39k
[18:56] <costyn> heathkid: :)
[18:56] <heathkid> no one does except one person (maybe) and the results are still up in the air (so to speak)
[18:56] <Lunar_Lander> he'll surely tell them how it was like
[18:56] <Lunar_Lander> them = press people
[18:56] <costyn> heathkid: well planes go through mach, not sure what the influence is on the airframe
[18:56] <fsphil> now we have to wait four weeks for the overdramatic Horizon episode on it
[18:57] <costyn> fsphil: :D I'm still watching it though
[18:57] <heathkid> costyn: look at the earliest attempts. The airframes didn't like it much...
[18:57] <costyn> heathkid: then he might've noticed it
[18:57] <costyn> or been influenced by it
[18:57] <fsphil> with such low pressure would he have?
[18:57] <heathkid> I'm guessing it would have been "felt"
[18:57] <costyn> good question
[18:58] <costyn> because we're defining mach 1 as the speed of sound at sea level; not quite where he was
[18:58] <fsphil> he would have been eased into the thicker air
[18:58] <heathkid> depending on his attitude... that could have influenced his spin
[18:58] <fsphil> the max q might not have been that high
[18:58] <Lunar_Lander> btw isn't today also the anniversary of Yeager reaching Mach 1 in the X-1?
[18:58] <heathkid> going that fast isn't exactly being "eased" into thicker air...
[18:58] <costyn> where are all our sciency types like eroomde ?
[18:58] <heathkid> Lunar_Lander: yes it is.
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[18:59] <costyn> heathkid: sure it is, the air density gradually increases
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[18:59] <Lunar_Lander> yeah like an exponential!
[18:59] <Lunar_Lander> hello Willdude123
[18:59] <costyn> heathkid: he was mostly at terminal velocity (except at the beginning), but that speed changes with air pressure
[18:59] <fsphil> yea it would have increased quite quickly
[18:59] <Willdude123> Hi.
[19:00] <costyn> Lunar_Lander: Willdude123 is the newcomer of the day. been asking questions and lurking here today :)
[19:00] <heathkid> costyn: he was at terminal velocity the moment he jumped off that platform...
[19:00] <Lunar_Lander> yeah
[19:00] <heathkid> everything about that *could* have been terminal
[19:00] <Lunar_Lander> btw
[19:00] <costyn> heathkid: nope. he accellerated first, then after some 10-20 seconds hit terminal
[19:00] <Willdude123> My apologies for all the n00b questions.
[19:00] <Lunar_Lander> on the ascent
[19:00] <Lunar_Lander> they said that he passed the record when he passed the Strato-Lab V mark
[19:01] <heathkid> costyn: I know that... but it's the idea of it I was talking about
[19:01] <Lunar_Lander> but the highest manned ascent had been Strato Jump II at 123000 ft
[19:01] <Lunar_Lander> but he made that too
[19:01] <Lunar_Lander> :)
[19:01] <fsphil> what are these ft things
[19:01] <costyn> heathkid: what do you mean?
[19:01] <heathkid> another record?
[19:01] <heathkid> costyn: would you have done what he did?
[19:02] <Lunar_Lander> well one of the records had been the highest balloon flight
[19:02] <costyn> heathkid: yea I think so (but I already have 1100 skydives)
[19:02] <fsphil> I would go up in one, but I wouldn't have jumped
[19:02] <fsphil> I'd love to get above 30km
[19:02] <fsphil> but a nice gentle descent for me :)
[19:02] <heathkid> costyn: if unclassified... what's your highest jump?
[19:02] <costyn> heathkid: euhm, 18.5kft, 5.6km
[19:03] <Willdude123> Decided to get an Arduino starter kit, I'll look into that, and start attempting C.
[19:03] <fsphil> not bad
[19:03] <heathkid> nice
[19:03] <costyn> Willdude123: good plan
[19:03] <heathkid> I prefer a ladder getting out of an airplane
[19:03] <fsphil> I prefer steps :)
[19:03] <heathkid> or at least a couple steps
[19:03] <heathkid> :)
[19:03] <Lunar_Lander> YAY FELIX
[19:04] <fsphil> we've a guy at work called Felix, gonna have to congratulate him tomorrow :)
[19:04] <Lunar_Lander> xD
[19:04] <costyn> fsphil: http://www.youtube.com/watch?v=tXa4w4aYKEk <-- hypoxic skydivers
[19:04] <heathkid> it's one thing jumping out of a perfectly good airplane... it's completely different jumping out of a perfectly good space capsule
[19:04] <costyn> fsphil: they act like they're drunk
[19:05] <costyn> fsphil: there was a problem with the oxygen supply to the skydivers (pilot has his own supply), but because they were hypoxic, nobody noticed
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[19:05] <Willdude123> So this habitat thing, what is it? I thought the protocol for communication was RTTY
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[19:06] <heathkid> the temperature inversion was incredible! I had no idea it was that extreme.
[19:06] <Lunar_Lander> yeah but habitat brings together all the services so to speak
[19:06] <Lunar_Lander> like if a person receives a balloon, his dl-fldigi uploads to the servers there
[19:06] <Lunar_Lander> and the information is incoporated to the mutual tracking
[19:07] Action: heathkid isn't sure he'll ever skydive
[19:07] <Willdude123> So what is RTTY, and how does it differ/connect with habitat?
[19:07] <heathkid> almost did in Vegas... but weather screwed that up.
[19:08] <heathkid> the guy I was with had thousands of jumps....
[19:08] <Lunar_Lander> Willdude123, RTTY is that modem like sound
[19:08] <Willdude123> Yep.
[19:08] <heathkid> anyone here from Norway?
[19:08] <Lunar_Lander> like the transmitter gets switched on and off to code letters and numbers
[19:08] <zyp> heathkid, I am
[19:08] <fsphil> eek costyn !!
[19:09] <heathkid> you folks are *crazy*!!! in a good way! :)
[19:09] <costyn> fsphil: from about 2:00 the guy & gal at the door are really confused and mucking about
[19:09] <Willdude123> OK, I now get what RTTY does, but where does habitat come in?
[19:09] <zyp> heathkid, :)
[19:09] <danielsaul> Willdude123: Habitat is the web system which everyone that receives balloon telemetry uploads to whereas RTTY is the mode of transmission - they have nothing to do with each other
[19:09] <zyp> heathkid, how so?
[19:09] <Lunar_Lander> btw today is the anniversary of Chuck Yeager's X-1 Flight!
[19:09] <Willdude123> OK.
[19:09] <Lunar_Lander> and tomorrow will be the anniversary of Thrust SSC
[19:10] <costyn> fsphil: and ealier the cameraman is pointing and laughing at them hehe
[19:10] <Lunar_Lander> https://en.wikipedia.org/wiki/ThrustSSC
[19:10] <heathkid> zyp: you folks will go anywhere, do anything, push the envelope, ignore common sense, etc.... "just because"
[19:10] <fsphil> that's mad
[19:10] <costyn> heathkid: all Norgwegians??
[19:10] <heathkid> costyn: no, just the ones I've met
[19:11] <Willdude123> I'm a bit overwhelmed by the fact I have to write my own software to encode gps stuff into RTTY, but I guess that's part of the challenge.
[19:11] <heathkid> military special forces
[19:11] <Willdude123> *stuff=data
[19:11] <fsphil> it's really not as bad as it looks Willdude123
[19:11] <fsphil> as I said, just start with a blinking LED program then work up :)
[19:11] <costyn> Willdude123: it isn't... you can borrow/steal bits of other peoples code and make it work without understanding all of it
[19:11] <Willdude123> :)
[19:12] <fsphil> almost everyone here started with the old classic blinky LED :)
[19:12] <costyn> yup
[19:12] <fsphil> it was certainly my first ever PIC and AVR program
[19:12] <heathkid> and I was worried our high altitude chamber at work wouldn't be good enough. It'll go to between 65-100k ft. (just replaced the seals)
[19:13] <heathkid> just can't do altitude AND temp at the same time...
[19:13] <Willdude123> One final (well probably not final) question, is it pronounced Are-dwe-no ?
[19:13] <fsphil> yes
[19:13] <heathkid> but seems the gear I have access to in our lab will do fine for testing the electronics payloads of future launches...
[19:14] <fsphil> I consider my launches to be the test :)
[19:14] <heathkid> seems the atmosphere gets nicer at 100k feet... at what point do the variables *really* change?
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[19:14] Action: costyn afk. going to spend some time with the missus
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[19:15] <fsphil> good luck costyn
[19:15] <Lunar_Lander> XD
[19:15] <heathkid> and how much $ do you guys usually spend on a "normal" HAB launch (not including the payload)
[19:15] <Lunar_Lander> oh man I am still so excited
[19:16] <fsphil> I remember Dr.Cox talking about the low pressure up a mountain, they basically couldn't film anything because he couldn't speak properly
[19:18] <Willdude123> LOL, http://www.extremetech.com/extreme/92054-black-hat-hacker-details-wireless-attack-on-insulin-pumps
[19:19] <fsphil> every single time I hear about SCADA, it's about how it's broken
[19:19] <heathkid> does anyone here have data from a previous lanuch over 100k ft. on temp, pressure, etc.?
[19:20] <heathkid> including altitude obviously
[19:20] <fsphil> I've never actually flown a temperature sensor
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[19:21] <heathkid> how much $ does a standard HAB launch cost? without the payload of course... which I'd keep at around 1 kilo or 2 at most...
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[19:21] <Lunar_Lander> hm
[19:21] <fsphil> "depends"
[19:21] <Lunar_Lander> balloon costs maybe $80
[19:21] <heathkid> say 1 kilo
[19:22] <Lunar_Lander> hello mclane
[19:22] <Lunar_Lander> did you watch n-tv too?
[19:22] <mclane> hi lunar
[19:22] <fsphil> the biggest cost is helium, and that all depends on your balloon size and target ascent speed, and payload weight
[19:22] <mclane> yes
[19:22] <heathkid> what about hydrogen instead?
[19:22] <heathkid> yes I know the dangers
[19:22] <fsphil> that's a fair bit cheaper
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[19:23] <heathkid> and with an electronics payload... does ascent speed really matter?
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[19:23] <heathkid> I know with this one it was limited to about 1k ft./minute
[19:23] <heathkid> seemed very slow
[19:23] <fsphil> a slower ascent speed will generally result in a higher altitude
[19:23] <heathkid> how so?
[19:23] <fsphil> 5m/s is standard
[19:23] <fsphil> there is less gas in the balloon
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[19:24] <heathkid> ah
[19:24] <fsphil> it takes longer to expand to its burst radius
[19:24] <fsphil> or it might not burst
[19:24] <Lunar_Lander> mclane, I was like excited to the max
[19:24] <Lunar_Lander> xD
[19:24] <heathkid> but once it reaches it's burst radius... I want to vent it into little mylar baloons w/ sensor packs...
[19:25] <fsphil> good luck with that :)
[19:25] <mclane> Lunar_Lander: only Austrians can do that
[19:25] <Lunar_Lander> XD
[19:25] <heathkid> fsphil: why?
[19:25] <heathkid> has it been tried?
[19:25] <heathkid> or just another failure waiting to happen?
[19:26] <fsphil> it would be very cool if it worked, but it's complex and I'm not sure what advantage it would have?
[19:26] <heathkid> me either
[19:26] <fsphil> a little mylar balloon filled at that altitude would fall
[19:26] <heathkid> why?
[19:27] <fsphil> it wouldn't be able to displace enough air to keep itself afloat
[19:27] <fsphil> it might float nearer the ground
[19:27] <fsphil> a latex balloon at 30km might get to 10m in size
[19:27] <fsphil> maybe bigger
[19:28] <heathkid> well... guess I have to start somwhere. Anyone got a link to the ~$80 balloon everyone uses?
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[19:30] <mclane> randomsolutions.co.uk
[19:31] <mclane> (strange company name? -> British humor?)
[19:32] <heathkid> anything in the US?
[19:32] <x-f> press conference has started
[19:32] <heathkid> press conference?
[19:32] <heathkid> where???
[19:33] <x-f> http://www.youtube.com/redbull
[19:33] <mclane> use google
[19:33] <fsphil> bing it
[19:33] Action: fsphil cleans out his mouth
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[19:34] <Lunar_Lander> and Heroes don't wear diapers!
[19:34] <x-f> no shit :)
[19:36] <x-f> here's te alien
[19:36] <x-f> the*
[19:36] <Lunar_Lander> xD
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[20:02] <Lunar_Lander> Felix said
[20:02] <Lunar_Lander> „Sometimes you have to be up really high, to see how small you really are. I’m coming home now.“
[20:07] <fsphil> I wonder why they used digital voice, it seemed to cut out quite a lot
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[20:08] <Lunar_Lander> yea
[20:09] <Lunar_Lander> you mean the thing which also did that sound when felix stopped talking?
[20:09] <fsphil> must have been
[20:09] <Lunar_Lander> like the beeping sound on Apollo
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[20:40] <Willdude123> Hi
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[20:42] <Willdude123> With HAB parachutes, do they just rely on catching the wind?
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[20:44] Nick change: grumbleist_ -> grumbleist
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[20:52] <DrLuke> what
[20:52] <DrLuke> mine has a built in jet turbine counteracting gravity
[20:52] <Lunar_Lander> xD!
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[20:56] <heathkid> am I back?
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[20:57] <heathkid> wind snapped my 3G mast in half...
[20:59] <heathkid> shows I'm connected.... hello?
[21:02] <X-Scale> We can hear you loud and clear, heathkid ! roger
[21:03] <heathkid> thanks X-Scale...
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[21:04] <heathkid> RST here for you is *perfect*... I just didn't know if I got lost in the noise...
[21:04] <heathkid> ...I usually do.
[21:04] <heathkid> :)
[21:04] <Willdude123> Do people usually use standard cameras or ones controlled by a microcontroller somehow?
[21:05] <heathkid> Willdude123: I've not done a launch yet... but I'd guess a combination of both
[21:05] <Willdude123> Okay.
[21:06] <Willdude123> I'll ask another time.
[21:06] <heathkid> the KISS principle (just in case) plus whatever tech you can throw at it... but at the end of the day... cams on board recording plus sensors on board recording may be all you end up with IF you find your payload after launch...
[21:07] <fsphil> the easy way is a canon camera running chdk
[21:08] <fsphil> although chdk can sometimes be a pain
[21:08] <Willdude123> What does that do?
[21:08] <fsphil> it allows you to run a small script on the camera
[21:08] <fsphil> so you can program it to do whatever you want
[21:08] <fsphil> a simple example being, take a picture every 10 seconds
[21:09] <Willdude123> So, plugged in to a microcontroller? Or just having a script to stop filming after a certain time?
[21:09] <fsphil> no chdk runs on the camera
[21:09] <fsphil> and why stop :)
[21:10] <Willdude123> So how does that aid filming?
[21:11] <Lunar_Lander> Willdude123, can you elaborate on your parachute question from earlier?
[21:11] <Willdude123> Lunar_Lander: Don't worry
[21:11] <fsphil> not sure what you mean
[21:12] <Willdude123> Dont worry, that was a stupid w
[21:12] <Willdude123> *question
[21:12] <Lunar_Lander> fsphil, somone wrote me on youtube and said he wants to fly a balloon in the UK and he asked whether the NTX2 could be used to send images/video from the balloon
[21:12] <Lunar_Lander> I think it only can do SSTV the most, right?
[21:12] <fsphil> you could do either sstv or ssdv with it
[21:12] <fsphil> but neither are that simple
[21:13] <Lunar_Lander> SSDV?
[21:13] <fsphil> yea, digital
[21:13] <Lunar_Lander> yeah I figured, just wanted to ask you because you have the most experience with SSTV from balloons
[21:13] <fsphil> I've only done ssdv :)
[21:13] <Lunar_Lander> and the people in Münster did live video on 2.5 GHz
[21:13] <fsphil> but others have done sstv
[21:13] <Lunar_Lander> *2.4 GHz
[21:14] <fsphil> I'd like to try 2.4ghz, even though I know it'll probably stop after about 2km :)
[21:15] <fsphil> a combination of 6mhz wide signal, 10mw power and small antenna don't mix :)
[21:15] <Willdude123> Wait, so you just stick a camera in there, and leave
[21:16] <Willdude123> It recording?
[21:16] <fsphil> yep
[21:16] <Willdude123> OK.
[21:16] <fsphil> taking pictures at regular intervals, or recording video
[21:16] <fsphil> which I suppose is the same thing technically
[21:16] <fsphil> but n/m
[21:17] <Lunar_Lander> fsphil, the professor there made a parabolic dish antenna with a tin can where the LNB would be for a satellite receiving system
[21:17] <Willdude123> Would a GoPro work?
[21:17] <fsphil> lots of people have used gopros
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[21:18] <fsphil> brb, dogmutt needs walked
[21:19] <Willdude123> They seem really expensive.
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[21:22] <Lunar_Lander> yeah
[21:22] <Lunar_Lander> Willdude123, I bought a refurbished Canon PowerShot A490 which runs good with CHDK
[21:22] <Willdude123> Will any canon camera work?
[21:23] <Lunar_Lander> good question, I can only talk for the A490
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[21:26] <joph> why do they leave so fast? :D
[21:26] <joph> http://chdk.wikia.com/wiki/CHDK :D
[21:27] <Lunar_Lander> yea
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[21:49] <fsphil> bbc news is saying Felix got to 833 mph
[21:52] <SpeedEvil> boom!
[22:02] <Lunar_Lander> speed of sound is?
[22:03] <fsphil> a google search away :)
[22:03] <fsphil> but yes it's supersonic
[22:03] <Lunar_Lander> :)
[22:04] <BrainDamage> 833 * mph = 372.38432(m / s)
[22:04] <Randomskk> speed of sound at 20km is not the same as at ground level at 20C
[22:04] <Lunar_Lander> yea
[22:05] <heathkid> that's fast!
[22:05] <Randomskk> for gasses, v=sqrt(gamma.R.T/M) so yea
[22:06] <Randomskk> I think 833mph is definitely supersonic
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[22:06] <BrainDamage> it's supersonic even at stp
[22:06] <LazyLeopard> That'd help explain why, though it was the highest, it wasn't the longest; he came down too fast. ;)
[22:06] <Lunar_Lander> US Standard Atmosphere says for 35000 m that c=308.3 m/s
[22:07] <fsphil> yea the chute came out too early for that one
[22:07] <fsphil> so
[22:07] <fsphil> Joe still has one record :)
[22:07] <Lunar_Lander> :)
[22:07] <Randomskk> I wonder if there was a sonic boom or not
[22:07] <Randomskk> guess there must have been.
[22:08] <Lucasbuck> was there enough atmosphere to create a boom?
[22:08] <Lucasbuck> where he was at
[22:08] <LazyLeopard> I guess a standard HAB tracker GPS wouldn't have coped... ;)
[22:08] <Randomskk> hmmm
[22:08] <Randomskk> might have been okay
[22:09] <Randomskk> really they're bad at high dynamics more than high speed
[22:09] <Randomskk> not even violating the COCOM limits
[22:09] <LazyLeopard> ...depending on what altitude he was at when he passed the velocity limit. ;)
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[22:09] <Lunar_Lander> I wonder if eroomde now is on the challenge to get supersonic too
[22:10] <Randomskk> LazyLeopard: the velocity limit on COCOM is like 1200mph
[22:10] <Lunar_Lander> after he did that exomars flight at Mach 0.8
[22:10] <Randomskk> 1000 knots to be precise, which is 1200mph so yea
[22:10] <Randomskk> not even close
[22:10] <BrainDamage> Lunar_Lander: grab a whip, and you can make something go supersonic yourself
[22:10] <Randomskk> Martlet-1 in May went supersonic
[22:10] <Lunar_Lander> YAY
[22:10] <LazyLeopard> Ah. Units. ;)
[22:11] <BrainDamage> I just feed all the silly units to qalculate which spits out SI
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[22:14] Action: heathkid likes whips
[22:14] <heathkid> amazing supersonic devices
[22:15] <fsphil> k
[22:20] #highaltitude: mode change '+o jonsowman' by ChanServ!ChanServ@services.
[22:20] Topic changed on #highaltitude by jonsowman!jonsowman@kryten.hexoc.com: Welcome to #highaltitude - discuss anything to do with high altitude projects (balloons, gliders, etc) www.ukhas.org.uk
[22:20] <Randomskk> hi jonsowman
[22:20] <jonsowman> hello
[22:20] #highaltitude: mode change '-o jonsowman' by ChanServ!ChanServ@services.
[22:20] <Randomskk> good dinner?
[22:20] <Lunar_Lander> hi
[22:21] <jonsowman> how's it going?
[22:21] <jonsowman> yes very nice thank you!
[22:21] <Lunar_Lander> good and with you?
[22:21] <Randomskk> I should do work, but instead watched Maltese Falcon
[22:21] <Randomskk> another classic
[22:21] <jonsowman> good thanks LL
[22:21] <Lunar_Lander> did you see the jump jonsowman ?
[22:21] <jonsowman> i did not
[22:21] <jonsowman> I was eating
[22:21] <Randomskk> basically
[22:21] <Randomskk> he jumped
[22:21] <Randomskk> fell
[22:21] <Randomskk> parachute opened
[22:21] <Randomskk> landed
[22:21] <jonsowman> predictable
[22:21] <Randomskk> yea
[22:22] <SpeedEvil> it's kinda cheating if your payload can talk,
[22:22] <jonsowman> fair enough I guess, it's not like we were expecting anything else
[22:22] <Randomskk> fun fact from twitter: if the earth was the size of a school globe, his jump was from 1mm above the surface
[22:22] <jonsowman> :D
[22:22] <jonsowman> that's cool
[22:22] <Randomskk> looks like he did go supersonic though
[22:22] <Lunar_Lander> yea and he almost did 40 km!
[22:22] <Lunar_Lander> that's really the highest balloon flight
[22:23] <Lunar_Lander> for men
[22:25] <Lunar_Lander> Randomskk, yay Neil DeGrasse Tyson said that
[22:25] <Randomskk> heh
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[22:40] <SpeedEvil> http://uk.autoblog.com/2012/01/16/jimmy-savilles-range-rover-caravan-for-sale/?a_dgi=aolshare_twitter now then, now then.
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[23:36] <m0psi> hi
[23:37] <m0psi> got a quickie re Rx
[23:37] <m0psi> on our school hab project, we don't yet have an expensive rx like an ft-817
[23:38] <m0psi> so, what is a good dongle solution to have as a telem rx station?
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[23:46] <fsphil> the rtl-sdr's are very cheap
[23:48] <m0psi> fsphill: is this the kind of thing that will work well http://ava.upuaut.net/store/index.php?route=product/product&path=71_63&product_id=70
[23:48] <fsphil> my client has messed up the url, but I'm assuming so :)
[23:48] <fsphil> I think that's the dongle with the protection diode installed?
[23:49] <m0psi> y
[23:49] <fsphil> yea
[23:49] <m0psi> ezcap usb dongle
[23:49] <fsphil> not as sensitive as say an ft-817
[23:49] <m0psi> sure
[23:49] <fsphil> but if used with the habamp it wouldn't be too far off it
[23:49] <fsphil> people have used it without any filters and amps too, but that will depend on your local area
[23:49] <X-Scale> There is even an ##rtlsdr here on freenode
[23:50] <fsphil> a strong nearby station might overload it
[23:50] <m0psi> got a friend with an 817, so may borrow that for the chase or ground team
[23:50] <fsphil> it's good to have options
[23:50] <m0psi> oh, i'll look that up once i get to that stage
[23:50] <fsphil> I used a funcube dongle on my last one
[23:50] <m0psi> so, i figured i get a couple of those, one to leave at home/school
[23:51] <m0psi> and another on the road with a laptop
[23:51] <m0psi> how much is the funcube one?
[23:51] <fsphil> about £120
[23:51] <m0psi> ok, i'll go with 23 :-)
[23:51] <m0psi> for now
[23:52] <fsphil> yea, the rtl-sdr's will do fine
[23:52] <fsphil> the funcube dongles came out a lot earlier
[23:52] <m0psi> i have an IC-706II
[23:52] <m0psi> unfortnately, no UHF
[23:53] <m0psi> so, i'll be selling that and getting IC-706IIG, which has the whole range
[23:53] <fsphil> I got an 817 for chasing, but that was before there where any dongles at all
[23:53] <fsphil> FT817 that is
[23:53] <m0psi> how much did yours set you back?
[23:54] <fsphil> can't remember now
[23:54] <fsphil> but I know they went up in price shortly after I got it
[23:55] <m0psi> well, they do work well, so, we'll use my buddy's one for the initial flights, and maybe persuade the school to get one later
[23:55] <m0psi> need to show them some nice pics first :-)
[23:55] <fsphil> keep an eye out for an FT790 too
[23:55] <fsphil> they appear on ebay from time to time
[23:55] <fsphil> and are just as sensitive as an 817
[23:55] <m0psi> ok
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[23:55] <fsphil> about £60-£100
[23:55] <m0psi> oh
[23:55] <fsphil> I got mine at £60 but I think I was lucky
[23:55] <m0psi> why so?
[23:56] <m0psi> just UHF?
[23:56] <fsphil> they usually go for more
[23:56] <fsphil> yea 70cm-only
[23:56] <fsphil> but the battery lasts ages
[23:56] <fsphil> and they look cool
[23:56] <m0psi> well, that will be fine for us. SSB?
[23:57] <fsphil> yes it does all modes
[23:57] <m0psi> also, i figured, ok to get Rx only
[23:57] <fsphil> the ft790 is a transceiver too but you can ignore the transmitter bit
[23:57] <fsphil> only 1 watt
[23:58] <fsphil> I think it's designed to go along with an amplifier
[23:58] <m0psi> y
[23:58] <m0psi> ok, makes sense
[23:58] <m0psi> balloons: seems like it is difficult to get the 1000g cheap one
[23:59] <m0psi> Hwoyee
[23:59] <m0psi> are there any other suppliers around?
[23:59] <fsphil> none that I know about
[23:59] <Lunar_Lander> rocketboy
[23:59] <fsphil> steve's out of 1000g hwoyee's
[23:59] <Lunar_Lander> oh
[00:00] --- Mon Oct 15 2012