highaltitude.log.20070204

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[04:24] <CablitoE> hellow there
[04:24] <CablitoE> any more news on the launch?
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[10:09] <edwardmoore> morning all
[10:10] <jcoxon> hey ed
[10:19] <edwardmoore> sorry, went t'loo
[10:19] <edwardmoore> how're things?
[10:19] <edwardmoore> sorry i disappeared last night. felt a lil odd
[10:21] <jcoxon> things seem okay
[10:21] <jcoxon> henry just went to bed
[10:22] <edwardmoore> only just now?
[10:22] <jcoxon> so i haven't seen anything yet (though no hurry)
[10:22] <edwardmoore> oh right
[10:22] <jcoxon> no no last night
[10:22] <edwardmoore> ok
[10:23] <edwardmoore> i signed up fopr the mailing list
[10:26] <jcoxon> cool
[10:26] <jcoxon> got an email from some radio guys who heard the payload for about 10 minutes
[10:27] <jcoxon> at 1.30 yesterday
[10:27] <edwardmoore> take-off
[10:27] <edwardmoore> actually that could be quite fun- stick an email address in the rtty packet
[10:27] <edwardmoore> on the off chance anyone is listening and decoding
[10:29] <jcoxon> i said that it would have been around hte first 20 mins of flight
[10:29] <jcoxon> and explained that we had comms problems
[10:30] <edwardmoore> i read lastnight's logs- steve having SD problems?
[10:31] <jcoxon> seems so
[10:31] <edwardmoore> that's a bummer
[10:32] <jcoxon> we'll have tracker's data
[10:32] <jcoxon> so not all is lost
[10:32] <edwardmoore> oh yes, good thinking
[10:32] <jcoxon> i've emailed laurence offering to host his pictures
[10:32] <edwardmoore> i might test my new-found c++ skills (engineering course, sigh) on making a little app that converts a log txt file into a kml plot file
[10:33] <jcoxon> :-)
[10:33] <jcoxon> that would be fun in C++
[10:33] <jcoxon> i personally would do it in perl
[10:34] <jcoxon> brb - washing to collect
[10:37] <edwardmoore> one language at a time!
[10:37] <edwardmoore> yep, i need to do things like cleaning and breakfasting. I'll be on ce soir/later.
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[13:34] <edwardmoore_> there's two of me. sigh
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[13:57] <CablitoE> hey
[13:58] <edwardmoore_> hi
[13:58] <CablitoE> Launch updates?
[13:58] <CablitoE> I am dying to know how it went
[13:58] <edwardmoore_> launched from cambridge yesterday
[13:58] <CablitoE> Altitude :?
[13:58] <edwardmoore_> beautiful day]
[13:58] <edwardmoore_> not sure yet!
[13:58] <edwardmoore_> but pretty pictures
[13:58] <CablitoE> where where where?
[13:59] <edwardmoore_> the flight log is in the hands of a guy who hasn't slept for about 3 days solid so we're being patient
[13:59] <CablitoE> You evil brits...
[13:59] <edwardmoore_> lol
[13:59] <CablitoE> Give me his cell phone, I will wake him up myself... since I am in brazil there wont be much he could do to harm me :)
[14:00] <edwardmoore_> i'm hoping the pics and info will materialise as soon as possible
[14:00] <edwardmoore_> lol
[14:00] <edwardmoore_> that's true
[14:00] <CablitoE> I had an idea.
[14:00] <edwardmoore_> well we had some radio problems
[14:00] <CablitoE> if we get the gps data
[14:00] <edwardmoore_> and the parachute was no where to be seen when we found it
[14:00] <CablitoE> we can plot them on google earth.
[14:00] <edwardmoore_> yeah, they will be
[14:00] <CablitoE> parachute did not deploy, or it deployed and ripped?
[14:01] <edwardmoore_> not sure!
[14:01] <edwardmoore_> more planing needed!
[14:01] <edwardmoore_> think it deployed but ripped
[14:01] <CablitoE> Well, I wish I was in the UK
[14:01] <edwardmoore_> cable ties are not so strong at -50 degrees
[14:02] <CablitoE> if there is humidity in the cables, that might be the problem
[14:02] <edwardmoore_> yes exactly
[14:02] <edwardmoore_> hmmm
[14:02] <CablitoE> At least you guys are in the right track - there is no way to learn other than actually doing it.
[14:02] <edwardmoore_> well, i need to do some university work but i'll be on tonight for sure
[14:03] <edwardmoore_> yeah, we learnt a bit
[14:03] <CablitoE> Ok, lets hope data is available then.... what time is it there?
[14:03] <edwardmoore_> it's an iterative process
[14:03] <edwardmoore_> one day we'll get it right!
[14:03] <edwardmoore_> it's 2pm here
[14:03] <CablitoE> ooo u in the UK ?
[14:03] <edwardmoore_> yeah
[14:03] <CablitoE> I thought brazil was 3 hour difference from gmt
[14:03] <edwardmoore_> in cambridge
[14:03] <CablitoE> oooo daylight saving time here
[14:03] <edwardmoore_> lol, yep
[14:04] <CablitoE> that figures it... Ok, I sooo will keep and eye on the channel
[14:04] <CablitoE> catch u latter then.
[14:04] <edwardmoore_> yeah do
[14:04] <edwardmoore_> if laurence comes on, perster him
[14:04] <edwardmoore_> he has the best photos
[14:04] <CablitoE> lol
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[14:19] <CablitoE> 25KM ground travel distance I assume
[14:19] <edwardmoore_> cambridge to colchester
[14:19] <edwardmoore_> ground cutdown limit was 50k
[14:19] <edwardmoore_> altitude cutdown was 25k
[14:22] <CablitoE> any damage to the payload?
[14:22] <CablitoE> (s) ?
[14:22] <edwardmoore_> uhuh :)
[14:23] <edwardmoore_> like i said, it landed without chute
[14:26] <CablitoE> on soft grass ?
[14:26] <CablitoE> perhaps a really think and flufy grass?
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[14:26] <edwardmoore_> a flowerbed
[14:26] <hmh33> hello
[14:26] <edwardmoore_> henry what news?
[14:27] <hmh33> just downloaded the data
[14:27] <edwardmoore_> and....
[14:27] Action: CablitoE has a stroke on the irc lag
[14:27] <hmh33> it recorded up to altitude 23.95km at 14:47
[14:27] <hmh33> then recorded a bunch of frames of blank data (no lock on GPS)
[14:28] <hmh33> up to 14:48:36
[14:28] <edwardmoore_> ok
[14:28] <edwardmoore_> respectable
[14:28] <hmh33> then from 14:48:36 to 14:48:59, position data but no altitude, gps had 3 satellites
[14:28] <hmh33> after that, blank again until 15:17:48
[14:29] <hmh33> when it presumably lost power
[14:29] <hmh33> since the battery came out on "landing"
[14:29] <hmh33> none of the cutdown conditions ever triggered so it didn't fire
[14:29] <CablitoE> I take no flowerbed on landing site.
[14:30] <CablitoE> Could not a cutdown condition be rapid loss of altitude? (assuming gps was running)
[14:30] <hmh33> so I reckon some event occured at 14:47, most likely balloon burst (don't know how the parachute etc vanished though)
[14:31] <hmh33> well you could have that as a condition, not sure why you'd want to / what it would help
[14:31] <hmh33> I actually set it to *never* cut down if it was descending
[14:31] <CablitoE> I am sorry my missunderstanding, I was thinking of parachute deployment.
[14:31] <hmh33> anyway 30mins seems vaguely consistent with a freefall from that height though I would have expected it to be a little quicker
[14:31] <hmh33> ah
[14:31] <hmh33> right
[14:31] <edwardmoore_> did laurence dump phoos?
[14:31] <hmh33> yes
[14:31] <hmh33> I have those
[14:32] <hmh33> I'll put all this up as soon as I can find some space
[14:32] <phatmonkey> how big was the hole in the ground? ;)
[14:32] <hmh33> we didn't see it...
[14:32] <phatmonkey> did they see it land? must have been a bit of a shock!
[14:32] <hmh33> but I bet it made a dent
[14:32] <phatmonkey> yeah
[14:32] <hmh33> no they didn't see it land
[14:32] <jcoxon> hmh33, i've got space if you need it
[14:32] <CablitoE> thank to the odds of luck it did not land on someones head.
[14:33] <hmh33> quite
[14:33] <edwardmoore_> can u ftp them to me?
[14:33] <edwardmoore_> i'm desperate!
[14:33] <edwardmoore_> or email the sexy ones
[14:33] <hmh33> ;) one sec
[14:33] <CablitoE> me too
[14:33] <CablitoE> if you are to email make me a copy
[14:33] <jcoxon> i'll upload them
[14:34] <phatmonkey> i think they'll go on the wiki, not sure how the uploading thing works though
[14:34] <edwardmoore_> ]speedy!
[14:34] <edwardmoore_> ed getting the shakes
[14:34] <edwardmoore_> ppl wanna see what that balloon thing was yesterday
[14:34] Action: CablitoE adding resonance to the shake
[14:36] <edwardmoore_> tyvm
[14:36] <hmh33> aaargh
[14:36] <hmh33> wtf
[14:36] <hmh33> they're not on the usb disk
[14:36] <hmh33> I'm not even kidding
[14:36] <hmh33> let me call Laurence
[14:38] <edwardmoore_> do
[14:38] <CablitoE> I told you brits are evil
[14:38] <hmh33> brb
[14:40] <hmh33> he's not answering
[14:40] <hmh33> they might have been corrupted when I pulled the usb disk out without "stopping" it
[14:40] <hmh33> running chkdsk
[14:41] <CablitoE> OMG
[14:41] <CablitoE> gps data could be ploted like this
[14:41] <CablitoE> http://www.gpsboomerang.com/images/gallery/7kmWaypoints.jpg
[14:42] <hmh33> looks a lot like Google Earth to me
[14:42] <hmh33> crap I can't get anything off the disk
[14:42] <hmh33> sorry guys
[14:42] <hmh33> they sure are some sexy photos though
[14:43] <hmh33> I'll keep calling Laurence
[14:43] <edwardmoore_> yeah do :)
[14:43] <hmh33> I can plot a KML file if it'll make you happier?
[14:43] <CablitoE> Yes
[14:43] <hmh33> give me 15 mins then
[14:43] <CablitoE> maybe use some recovery tools, of some knopix distro
[14:44] <CablitoE> What file system was used in the usb disk?
[14:44] <hmh33> FAT
[14:44] <CablitoE> if it was FAT then perhaps making an image of the disk can help.... hang on
[14:44] <CablitoE> let me think
[14:44] <CablitoE> how big is it?
[14:45] <hmh33> 1GB, sorry
[14:45] <hmh33> I'm sure Laurence will put them online soon
[14:46] <CablitoE> Ooo I mean, data was not lost, laurence has a copy
[14:46] <CablitoE> I thought it was the payload drive that got corrupted, if it was so I´d dive into some partition editor and try to fix the FAT table
[14:47] <CablitoE> pulling usb drives "hot" only brings integrity issues when cache has not been flushed.
[14:48] <edwardmoore_> henrooo, what kinda format is the gps log in?
[14:48] <edwardmoore_> cos i want to practice my c++ but converting it into a kml file
[14:48] <edwardmoore_> by*
[14:51] <CablitoE> by the way, if in any point anyone needs 3d modeling, I can perhaps help there.
[14:51] <CablitoE> the glider guy, whats his nickname here?
[14:52] <jcoxon> laurence is working on a glider
[14:53] <CablitoE> Is he going to build an airframe from scratch?
[14:55] <hmh33> I think he's using a standard inexpensive model plane
[14:55] <CablitoE> I will hook up with him on this, I can build 3D models of it to help visualize and later serve as blueprints to build it. I also have some ideas.
[14:55] <hmh33> ed, it's in a slightly broken comma-separated format
[14:55] <hmh33> I have the KML file, uploading it now
[14:56] <hmh33> hope you don't mind the horrible colour
[14:56] <CablitoE> not sure how modelplanes will do in high speed fall. I´ve seen modelplanes wings break on acrobatic shows.
[14:58] <hmh33> http://www.srcf.ucam.org/~hmh33/ukhas1_tracker4.kml
[14:59] <hmh33> the raw logfile is at http://www.srcf.ucam.org/~hmh33/ukhas1_nova3.5.txt
[14:59] Action: CablitoE faints
[15:00] <jcoxon> brb
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[15:01] <CablitoE> Ooo this UK gps readings are werid
[15:01] <CablitoE> I am not used to seeing 0,xxxx for latitude :)
[15:01] <hmh33> well, it's longiture ;)
[15:01] <hmh33> longitude*
[15:02] <hmh33> also my code has a bug in printing negative floating point numbers
[15:02] <CablitoE> sorry my bad
[15:02] <hmh33> in the KML file I artificially set the altitude to 5km for the frames with no altitude information
[15:03] <CablitoE> shame on me, and I´ve done a circunavigation ; lol
[15:04] <hmh33> wow, cool
[15:04] <hmh33> I've always wanted to fly all the way around
[15:04] <CablitoE> I did it by boat
[15:04] <CablitoE> sailboat
[15:05] <CablitoE> 4 years
[15:05] <hmh33> that's fantastic
[15:06] <CablitoE> sort of
[15:07] <CablitoE> makes me wanna jump out of the office window everytime I remember of it and askmyself "What am I doing here looking at this screen tpying code?"
[15:08] <CablitoE> the balloon data on google earth gives a vision of beauty
[15:08] <CablitoE> so high
[15:08] <CablitoE> then you zoom out and realise its not that high
[15:09] <edwardmoore_> lol
[15:09] <edwardmoore_> yeah it's a good plotg
[15:09] <CablitoE> still a fantastic line of sight.
[15:09] <edwardmoore_> i like the way you can see the trace disappear into my window
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[15:10] <CablitoE> Whats with the rapid accent ?
[15:10] <CablitoE> all of a sudden it just gains a lot of height
[15:10] <edwardmoore_> where abouts?
[15:11] <CablitoE> on its way "back"
[15:11] <CablitoE> when its near cambrige again
[15:12] <CablitoE> assuming the drift speed was somewhere near the same for all the trip of course
[15:13] <CablitoE> omg
[15:13] <CablitoE> line of sight to amsterdan
[15:14] <hmh33> you can very clearly see a large chunk of France in one of the photos
[15:14] <hmh33> it's interesting how abruptly it changes direction
[15:14] <edwardmoore_> yeah
[15:14] <edwardmoore_> j-stream for you
[15:15] <edwardmoore_> i really want the photo which has london, isle of white and france all in shot
[15:15] <edwardmoore_> that was a stonker
[15:15] <hmh33> oh boy tracker 5 is going to be so sweet
[15:16] <hmh33> smallest tracker EVER
[15:16] <edwardmoore_> but will it blend?
[15:17] <edwardmoore_> henry where did you get the radio modules from?
[15:18] <hmh33> Radiometrix
[15:18] <edwardmoore_> from ou?
[15:18] <hmh33> from Radiometrix
[15:18] <hmh33> it's the NTX2
[15:18] <hmh33> they're about £22, email/phone them with card details and they ship next day
[15:19] <hmh33> but we have several
[15:19] <edwardmoore_> hmm
[15:19] <hmh33> and don't you dare blend my trackers
[15:19] <edwardmoore_> might get one
[15:19] <edwardmoore_> i'm already over=borrowing :)
[15:19] <edwardmoore_> was talking to steve about a more optimised receiving solution
[15:20] <edwardmoore_> getting the data before it's demodulated, and doing our own filtering
[15:20] <edwardmoore_> and tracking
[15:20] <edwardmoore_> on a dspic or summit
[15:22] <edwardmoore_> i really want to make a direction finding one out of scaffolding poles tho!
[15:25] <hmh33> you can put a fast ADC in at the intermediate frequency point
[15:25] <hmh33> but I really don't think it's worth the effort
[15:25] <hmh33> you'd only get a dB or two better
[15:26] <edwardmoore_> it would save requiring owndership[
[15:26] <hmh33> ?
[15:26] <edwardmoore_> whoops... ownership of a big radio
[15:26] <edwardmoore_> like steve's
[15:26] <hmh33> nah you'd still need a big radio
[15:26] <edwardmoore_> well he reckoned you could use a radiometrix receiver
[15:26] <hmh33> you'd just bodge it to provide an IF out
[15:26] <edwardmoore_> and a yagi
[15:27] <edwardmoore_> and try and get access to the rf before the radiometrix has its way with it
[15:27] <hmh33> oh I'm sure you could do that but I really doubt it would provide as good performance
[15:28] <edwardmoore_> might be worth some investigation though
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[15:31] <edwardmoore> woops
[15:46] <hmh33> I'm off now, catch you later
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[16:17] <CablitoE> where are the pictures?
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[16:18] <CablitoE> Wake up Laurence, I´ve heard Ammonia is really good for that;
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[16:41] <CablitoE> hey
[16:41] <hmh33> hiya
[16:41] <CablitoE> anyluck on briging laurence to concience?
[16:41] <CablitoE> [CablitoE] Wake up Laurence, I´ve heard Ammonia is really good for that;
[16:42] <hmh33> lol
[16:42] <hmh33> well I've called him and sent text messages
[16:42] <hmh33> but I don't think he uses his mobile much
[16:42] <hmh33> maybe there was something in the pictures too shocking to tell us about
[16:43] <CablitoE> do you know what is the theoretical height limit for helium ballons?
[16:43] <hmh33> it depends on the payload weight obviously
[16:43] <hmh33> but
[16:43] <hmh33> 35km is definitely possible
[16:43] <hmh33> 40km just about possible with a large balloon and superlight payload
[16:43] <hmh33> above that, not really
[16:43] <CablitoE> 35km you get *some* earth curvature
[16:44] <hmh33> yep it was pretty curvy from 32km on Nova 1
[16:44] <CablitoE> btw: You know PIC microcontrollers?
[16:44] <hmh33> yes ;)
[16:44] <CablitoE> You know how I could get information from an LDR into 0~100 values? easy?
[16:45] <hmh33> sure
[16:45] <hmh33> do you need to correct it to linear with light intensity?
[16:45] <hmh33> and is it to feed into something else, or to be recorded by the PIC?
[16:47] <CablitoE> Well, actually, what I want to do is
[16:47] <CablitoE> #1. order my pic recorder today for once and for all.
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[16:48] <CablitoE> #2. re-learn all I´ve forgoten about eletronics, that all being not much.
[16:48] <hmh33> hi icez
[16:48] <CablitoE> #3 Make an array of LDRs, and store their levels in an array.
[16:48] <icez> hi hmh33
[16:48] <hmh33> 1. Free samples are your friend
[16:49] <CablitoE> That array consisting of a very large array (each 10º steps both for azimuth and elevation)
[16:49] <hmh33> 2. Digital electronics and microcontrollers are pretty easy :)
[16:49] <hmh33> ah
[16:49] <hmh33> ok
[16:49] <CablitoE> to detect "where the sun is"
[16:49] <hmh33> how many LDRs in total then?
[16:49] <CablitoE> 36 * 9
[16:50] <hmh33> you may want to use some external ADCs
[16:50] <hmh33> or some analog multiplexers
[16:50] <CablitoE> wow.... 300 some of them.
[16:50] <hmh33> might it be more efficient to use a camera?
[16:50] <hmh33> or a single array that you rotate
[16:50] <CablitoE> I´ve thought about rotating but that adds mechanical points of failure
[16:51] <CablitoE> But with 9 sensors rotating I could use cheaper Pics right?
[16:51] <hmh33> well PICs are essentially free because of samples.microchip.com
[16:51] <hmh33> but it would certainly be less complicated in electronics hardware and software
[16:52] <hmh33> most of the 18F series PICs have 10 ADC channels built in
[16:52] <hmh33> a camera wouldn't be so hard though
[16:52] <hmh33> there are some chips that let you download an image into the PIC
[16:53] <CablitoE> Then again, I may not need that many LDRs, because I can "make precision" with software averages.
[16:53] <hmh33> and in general, machine vision may be difficult but I'm pretty sure finding the brightest point isn't that hard
[16:53] <hmh33> interpolation can only get you so far
[16:53] <CablitoE> I wrote an license plate reader once, its in use in Sao paulo to track cars, i do pretty well on machine vision
[16:53] <hmh33> heh
[16:53] <hmh33> no problem then
[16:53] jcoxon (n=jcoxon@jac208.caths.cam.ac.uk) joined #highaltitude.
[16:54] <hmh33> if you do want to use LDRs, you can reduce the number as you get further "north"
[16:54] <CablitoE> I will try to look into the CCD idea.... on the "north" idea I thought about using a virtual north
[16:55] <CablitoE> so I would not be able to optimize using less LDRS where the sun "would not be"
[16:56] <CablitoE> Its basically for a comercial idea, make a solar pannel posicioning controler.
[16:56] <hmh33> oh
[16:56] <hmh33> well
[16:56] <hmh33> for a fixed installation or mobile?
[16:56] <CablitoE> Fixed
[16:56] <hmh33> a clock should tell you where teh sun is then :)
[16:57] <CablitoE> Depending on where in brazil you are...
[16:59] <CablitoE> There seem to be some laws that will probably offer investments for solar pannels investments in near future... I am kinda wondering if there is an oportunity there.
[17:00] <hmh33> brb
[17:00] <CablitoE> Also the idea is to deal with cloud cover
[17:00] <CablitoE> sometimes you get a cloud right over the sun, but the rest of the sky is clear, then you are not pointing to the right place.
[17:17] edwardmoore (n=edwardmo@pomegranate.chu.cam.ac.uk) joined #highaltitude.
[17:18] <edwardmoore> hi huys
[17:19] <edwardmoore> guys*
[17:21] <icez> hi
[17:22] <edwardmoore> any pictures of yesterday's launch about?
[17:22] <icez> I was about to ask the same thing :]
[17:22] <jcoxon> nothing yet it seems
[17:22] <edwardmoore> grr
[17:23] <jcoxon> really we are waiting for laurence - rocketboy i seem to remember will upload them tonight
[17:23] <edwardmoore> as a random asside, the pics from mihab have a significantly wider field of view than google earth for a given altitude
[17:24] <icez> they aren't taken from high orbit either :)
[17:24] <edwardmoore> lol
[17:33] <edwardmoore> idea
[17:34] <edwardmoore> parachutists (and others) sometimes put a big old streamer on their leg/at the bottom of the train
[17:34] <edwardmoore> it gives the thing a little more stability on the way down
[17:35] <edwardmoore> also, it sort of keeps the chute pointing into the wind, which tries to make the chute go against the wind
[17:36] <edwardmoore> and also you can make it very big and orange
[17:36] <edwardmoore> so generally it might be worth sticking one on the bottom of the next train!
[17:43] <CablitoE> maybe the velocity of fall was too high when the chute finally opened
[17:43] <CablitoE> and it ripped?
[17:53] <edwardmoore> well
[17:53] <edwardmoore> yes i suppose
[17:53] <edwardmoore> except you're still talking air densities of the order of 1% sea level
[17:53] <edwardmoore> so the force shouldn't be that significant
[18:11] <rikstah> still no pictures?
[18:42] <CablitoE> air density of 1% sea level means 9m/s acceleration.
[18:44] <CablitoE> from zero speed on ballon burst, 1 second later and the speed of fall is 30km/hour...
[18:47] <CablitoE> from 20km to 10km altitude, pressure increases in a different rate than from 10km to 5km for instance
[18:47] <CablitoE> so we can say, from 25km to 15km its a free fall with no air resistance effect
[18:47] <CablitoE> or very little
[18:48] <CablitoE> It could easly get speeds in the hundreds of km/h
[19:15] <phatmonkey> i think somebody did a missile shaped payload where the parachute only released at the last minute
[19:15] <phatmonkey> it reached 600-700 mph iirc
[19:16] <phatmonkey> from 100,000ft or so
[19:16] <phatmonkey> that'd be fun, but would be incredibly dangerous around built up areas in the UK
[19:16] <phatmonkey> i think they did it in some desert in the US
[19:17] <rikstah> it was dangerous enough when this payload just fell
[19:17] <phatmonkey> quite
[19:17] <phatmonkey> i wonder how fast it was going at the end
[19:17] <rikstah> surely lethal
[19:18] <phatmonkey> didn't this happen before? i swear it was only 30mph or so
[19:18] <phatmonkey> still a nasty bump on the noggin
[19:18] <rikstah> if everything was polystyrene shrouded, i guess it wouldnt be quite so bad
[19:19] <CablitoE> well
[19:19] <CablitoE> my wife threw a pack of smokes the other day from the 6th floor
[19:19] <rikstah> i'd reckon that it'd be faster than 30mph
[19:19] <CablitoE> it acually hurts
[19:19] <phatmonkey> might be interesting testing how much damage a payload with small/large/no parachute would do
[19:20] <CablitoE> and its 20 cigaretes worth of weight
[19:20] <phatmonkey> controlled destruction is always fun
[19:20] <rikstah> it depends on the density of the payload though, because a lot of the payloads would probably disintegrate quite easily
[19:20] <CablitoE> last moment chute could do the trick
[19:21] <CablitoE> if gps/controler are still running to the last moment.
[19:21] <CablitoE> even the glider projects have risk
[19:21] <rikstah> could use one of them parachute AADs but they are about ?750 heh
[19:21] <CablitoE> 750 pounds?
[19:21] <rikstah> yeah
[19:21] <rikstah> skydivers use them
[19:22] <CablitoE> bloody mary
[19:22] <rikstah> im learning at the moment
[19:22] <rikstah> jumped quite a few times
[19:22] <CablitoE> you see
[19:22] <CablitoE> i have a theory on skydiving.
[19:23] <rikstah> if at first you don't succeed it isn't for you?
[19:23] <CablitoE> When they invented them parachutes, they did it because they thought "ok, when all else fails and death is certain, I can TRY to jump with this and save my life"
[19:23] <rikstah> i guess :)
[19:23] <CablitoE> So jumping of a perfectly functioning plane ...
[19:24] <rikstah> ...is FUN
[19:24] <CablitoE> is thinking "ok, if I say in the plane, by the looks of it, I wont die, so I will TRY to get myself killed by jumping of it"
[19:24] <CablitoE> stay*
[19:25] <rikstah> it's really not as risky as you probably think...providing you do things by the book
[19:26] <CablitoE> I know, my ex-gf was a firefighter and champion in skydiving, he told me all about it... its like helicopters, they are actually safer than planes, even though at first thought it does not look like.
[19:26] <CablitoE> ex-gf father actually
[19:26] <rikstah> haha i was gonna say....
[19:26] <rikstah> safety is a statistic though really
[19:27] <rikstah> if you do crazy shit...like deploy at 2000 feet insead of 6000...to get some more freefall
[19:27] <rikstah> you're askig for trouble
[19:27] <rikstah> instead*
[19:27] <CablitoE> any risk from opening too soon?
[19:27] <CablitoE> like u jump of the plane and deploy? r
[19:28] <CablitoE> I´d like to know if I am going to die the sooner the possible.
[19:28] <rikstah> i believe it's allowed, but you risk being tangled with other jumpers i guess
[19:28] <CablitoE> But balloon will be regulated soon enough, the day a payload hits someone in the head, they will make a fuss about it, so its better we all think about safety before it actually gets to be an issue.
[19:28] <rikstah> im not 100% on that...i never asked
[19:28] <rikstah> if you open at 1000 feet and you need to cut away and deploy your reserve, it's probably too late
[19:29] <rikstah> it's very easy to not realise your so low, with all that rush you can easily lose attention
[19:30] <CablitoE> i dont get it
[19:30] <CablitoE> isnt the reserve smaller?
[19:30] <rikstah> pretty much the same
[19:30] <rikstah> but then ppl do crazy shit like....try to fix their main chute, cost cut away costs you ?3000 in chute
[19:31] <rikstah> thats when ur risking it
[19:32] <CablitoE> ooo
[19:32] <CablitoE> money cant be an factor of choise
[19:32] <rikstah> no way, but ppl are crazy
[19:33] <CablitoE> on payload chutes
[19:33] <CablitoE> in the uk it might be lighter
[19:34] <CablitoE> but in states if someone gets hit by a payload
[19:34] <CablitoE> you better have cleaned your finger prints before launching
[19:38] <phatmonkey> there isn't any regulation apart from the caa is there?
[19:38] <phatmonkey> the caa only seem to care about it when it's in the air
[19:38] <phatmonkey> planes and all that
[19:38] <CablitoE> I bet there is somewhere in the law that says you cant drop stuff in peoples head
[19:39] <phatmonkey> haha, yes
[19:39] <CablitoE> I mean, best case scenario on a disaster, the payload falls with chute all right... but it lands ontop of a highway
[19:39] <phatmonkey> but i mean a law against dropping things not intended to hit people on the head
[19:40] <CablitoE> Well, thats what I meant, in UK common sense applies.
[19:41] <CablitoE> in the US you can be held liable for a nail that you forgot in front of a house because some idiot steped on it and while screaming ruined his vocal chords.
[19:43] <CablitoE> not being anal about it, but supose some airplane debris falls on your car and breaks the windshield and it so happens to have Virgin logo stamped on it, you might just give them a call and express how pissed of you are.
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[20:05] laurenceb (n=Laurence@cpc2-oxfd9-0-0-cust392.oxfd.cable.ntl.com) joined #highaltitude.
[20:05] <laurenceb> Hi all
[20:06] <laurenceb> I have lots of photos and videos lol, unfortunately Henry doesnt as his usb stick was corrupted
[20:09] <icez> !
[20:11] <laurenceb> my payload is utterly trashed
[20:12] <laurenceb> it landed on a wooded bench type thing and then everything else landed on top
[20:17] <phatmonkey> ouch
[20:18] <laurenceb> my lcd screen was ripped off
[20:18] <laurenceb> and the temperature sensor as well
[20:20] <laurenceb> how do you do ftp in ie7???
[20:23] <laurenceb> oh got it sorted
[20:24] <rikstah> do you need any hosting?
[20:24] <laurenceb> what altitude did we get to?
[20:24] <rikstah> i believe it was 25km
[20:25] <laurenceb> looks higher to me
[20:25] <rikstah> i could be wrong
[20:26] <laurenceb> this ftp is very slow, I may try from elsewhere
[20:27] <laurenceb> is there enough data for a kml file?
[20:27] <rikstah> yeah sec
[20:27] <rikstah> http://www.srcf.ucam.org/~hmh33/ukhas1_tracker4.kml
[20:28] <edwardmoore> pictures!!!!
[20:30] <laurenceb> have to get them off my pc somehow....
[20:30] <rikstah> laurenceb, do you want some webspace on a server
[20:30] <laurenceb> yes, I'm trying to ftp them to henry
[20:31] <laurenceb> but its very slow
[20:31] <rikstah> ah cool
[20:31] <rikstah> what speed
[20:31] <laurenceb> well it'l take another 3 hours
[20:31] <edwardmoore> sigh
[20:31] <rikstah> screw that
[20:31] <laurenceb> theres some very interesting files on henrys ftp lol
[20:32] <rikstah> pr0n
[20:32] <laurenceb> but I'll save him any embarrisment
[20:32] <edwardmoore> maybe you could wack up 10 of the best on a web site somewhere?
[20:32] <laurenceb> yes 5 mins
[20:33] <edwardmoore> cool
[20:38] <laurenceb> upload to ukhas wiki is fast, I might upoad the long video I made
[20:38] <edwardmoore> url...url...url...url...
[20:38] <laurenceb> I've just joined all the videos back to back
[20:38] <laurenceb> sorry another few minutes
[20:40] <laurenceb> I'll b uploading to the mihab3 page
[20:42] <laurenceb> steady on ukhas seems to be crashing now calm down :)
[20:42] <edwardmoore> lol sorry
[20:42] <edwardmoore> i'll wait a min before refreshing
[20:44] <laurenceb> ok I'm now uploading the 150mb video
[20:44] <laurenceb> about half uploaded so far
[20:44] Golfgeo (n=ice@x142235.fttd-s.tudelft.nl) joined #highaltitude.
[20:44] <Golfgeo> Hi all
[20:45] <laurenceb> sorry its wmv
[20:45] <edwardmoore> hi
[20:45] <laurenceb> hi
[20:45] <edwardmoore> i can live with wmv
[20:45] <edwardmoore> flipformac is a beautiful thing
[20:45] <laurenceb> and the quality is maybe slightly reduced
[20:46] <edwardmoore> there's only one photo on mihab 3!
[20:48] <laurenceb> thats cuz I'm uploading this vid
[20:48] <Golfgeo> Has Nova 3 been returned?
[20:48] <edwardmoore> nova3 is actually "nove3"
[20:49] <edwardmoore> whoops, "nova3"
[20:49] <Golfgeo> :-)
[20:49] <edwardmoore> yeah, it has
[20:49] <edwardmoore> but some friendly germans
[20:49] <edwardmoore> by*
[20:49] <edwardmoore> not having much luck with typing this evening
[20:49] <edwardmoore> sorry
[20:49] <edwardmoore> :)
[20:49] <Golfgeo> :-)
[20:50] <Golfgeo> I read it on the site, but are there any more results availible. That is, from the inflight data recording?
[20:50] <edwardmoore> you'll have to ask hmh33
[20:50] <hmh33> sup dudes
[20:50] <edwardmoore> i think he lost info just off the coast of holland
[20:50] Action: Golfgeo kicks hmh33
[20:50] <hmh33> yes I have a KML, I'll put it up
[20:51] <edwardmoore> and that it washed around toward denmark
[20:51] <Golfgeo> :-)
[20:51] <hmh33> oh
[20:51] <Golfgeo> KML?
[20:51] Action: Golfgeo still needs to learn the local lingo...
[20:51] <hmh33> I have a KML (Google Earth plot) of the telemetry we got from Nova 2 up until the laptop crashed (we were drinking beer at the time)
[20:51] <Golfgeo> :-)
[20:51] <edwardmoore> .kml is the extension that google earth files use
[20:52] <hmh33> it was some distance off the coast at that point, but still rising with no sign of bursting
[20:52] <Golfgeo> ah, ic
[20:52] <hmh33> I reckon it got maybe 3/4 the way to holland but that's just a guess really
[20:52] <edwardmoore> it was nice beer though
[20:52] <Golfgeo> lol
[20:52] <hmh33> it was never seen again or recovered, even if someone found it there was nothing identifying on it that would have survived the sea
[20:52] <hmh33> "nova 3" was just a cutdown test, it was supposed to cutdown 1 hour after launch. no cameras or anything.
[20:52] <Golfgeo> but the jerries got it, right?
[20:53] <hmh33> "nova 3" is what was found by the huns
[20:53] <hmh33> and returned
[20:53] <Golfgeo> :-)
[20:53] <Golfgeo> so, it had no data recording onboard?
[20:53] <hmh33> right
[20:53] <hmh33> no gps or anything
[20:53] <hmh33> just a timed cutdown and a Morse beacon
[20:54] <hmh33> pity really, I'm sure the photos and track would have been interesting
[20:54] <edwardmoore> henry-
[20:54] <laurenceb> sorry folks, ukhas wiki is acting up
[20:54] <hmh33> would you like the KML file from Nova 2?
[20:54] <edwardmoore> 3.7V, 6.4Ah, 150g
[20:54] <edwardmoore> whadda ya think?
[20:54] <hmh33> one minute let me weigh my battery
[20:55] <edwardmoore> please note the capacity
[20:55] <Golfgeo> not yet "playing" at that level... Well, not yet :-)
[20:55] <hmh33> the ones we have are 3.7V 2Ah and three of them weigh 114g
[20:55] <hmh33> LiPoly presumably
[20:56] <edwardmoore> uhuh
[20:56] <hmh33> so about the same capacity/weight
[20:56] <edwardmoore> oh well, i'll go for naked cells and get it down to 90g or something :P
[20:56] <hmh33> what do yours cost though?
[20:56] <edwardmoore> btw these are rechargeable
[20:56] Nick change: Golfgeo -> Golfgeo|away
[20:57] <Golfgeo|away> bbl
[20:57] <hmh33> yeah mine too
[20:57] <hmh33> Lithium disposables are at least twice as good in terms of capacity/weight
[20:57] <hmh33> mine are naked cells I think
[20:58] <edwardmoore> i think i can get away with £10 each
[20:58] <edwardmoore> if they're the same brand there might be an arguement for 2 bigger ones
[20:58] <edwardmoore> rather than 3 smaller
[20:58] <hmh33> http://www.sparkfun.com/commerce/product_info.php?products_id=340
[20:58] <edwardmoore> from a volume/surface area/very cold up there point of view
[20:58] <hmh33> if those are £10 each that's much better
[20:59] <edwardmoore> also sexilly, these new ones can take 20C discharge continuous
[20:59] <hmh33> without exploding?
[20:59] <edwardmoore> i think they're the same kokam cells, just newer generation
[20:59] <hmh33> but it's more fun when they explode
[20:59] <edwardmoore> yes
[21:00] <edwardmoore> 40C for 1 sec, 20 continuous
[21:00] <edwardmoore> they've been listening to aero modellers ;)
[21:00] <hmh33> heh
[21:01] <laurenceb> I've got something similar on my glider
[21:02] <hmh33> I'm going to do laundry, back in 15
[21:02] <laurenceb> got a couple of photos up but working on the video
[21:02] <edwardmoore> cool
[21:03] <edwardmoore> how's progress?
[21:03] <laurenceb> I seem to have uploaded it but cant display it
[21:03] <edwardmoore> :o
[21:05] <edwardmoore> i'm getting the shakes here ;)
[21:06] <laurenceb> its not there will try again
[21:06] <laurenceb> ukhas wiki upload is a bit dodgy
[21:06] <laurenceb> think it freaked out
[21:07] <jcoxon> hey laurenceb
[21:07] <jcoxon> upload them onto me
[21:07] <laurenceb> hi there
[21:07] <laurenceb> k how
[21:07] <edwardmoore> ed really is getting the shakes and the willies and various other euphemistic terms for impatience verging on OCD
[21:07] <jcoxon> can you email them to my account
[21:08] <jcoxon> i'll wack them on to my webspace
[21:08] <laurenceb> stupid internet why cant you just dump stuff on it
[21:08] <laurenceb> are you sure theres about 300mb of stuff
[21:09] <jcoxon> oh okay
[21:09] <jcoxon> i'll send you the password to do it yourself
[21:09] <laurenceb> thanx
[21:10] <edwardmoore> i think nova has it all wrong
[21:10] <edwardmoore> put a rocket on the bottom of a glider
[21:10] <edwardmoore> take both up
[21:10] <edwardmoore> put a smaller rocket on a glider
[21:10] <edwardmoore> drop the pair, and launch the glider
[21:10] <edwardmoore> glider climbs at about 45 degrees
[21:11] <edwardmoore> launch the rocket from underneath the glider
[21:11] <laurenceb> hmm it would be stable
[21:11] <edwardmoore> and from quite a high initial starting velocity
[21:11] <jcoxon> email sent
[21:11] <edwardmoore> rocket stability is the biggest problem, and if we launched from a rocket the starting velocty would be total dribble
[21:12] <edwardmoore> whereas a glider is much easier to control
[21:12] <jcoxon> at that altitude?
[21:12] <jcoxon> with 1% atmo?
[21:12] <edwardmoore> yeah i reckon so
[21:12] <edwardmoore> at 200+ mph
[21:12] <edwardmoore> i'd have a much easier time controlling a glider at 1% atm than a rocket anyway
[21:12] <edwardmoore> bear in mind this glider would be a glider-rocket (glocket)
[21:13] <edwardmoore> then the glider can come down on its own 9this assumes we have gliders working more routinely by then)
[21:13] <laurenceb> jcoxon your email just says send photos
[21:13] <edwardmoore> and the rocket can be launched at a high speed and decent angle
[21:13] <jcoxon> i just emailed you the ftp details
[21:14] <edwardmoore> and think how orgasmic the video footage from the glider would be?
[21:14] <jcoxon> edwardmoore, so rather like a shuttle then
[21:14] <laurenceb> can I email you a 136mb file?
[21:14] <jcoxon> ummm let me check
[21:14] <icez> lol
[21:14] <edwardmoore> sort of heah
[21:14] <jcoxon> yes
[21:14] <edwardmoore> except i was planning more glider than rocket in terms of physical size
[21:14] <laurenceb> k just a sec
[21:14] <edwardmoore> more like how space ship one launched
[21:15] <laurenceb> was looking a kalman filters
[21:15] <edwardmoore> and gliders have big old wings which would be enough of a control surface at rockety speeds
[21:16] <edwardmoore> voodoo filters
[21:16] <laurenceb> its quite clever, filters out unphysical stuff
[21:16] <edwardmoore> mr kalman was a smark cookie
[21:16] <edwardmoore> it's almost like a 1-pill solution for controlly needs in this context
[21:16] <laurenceb> it seems, it would be good 4 getting a pos estimate between gps fixes
[21:17] <edwardmoore> yes, and also improving the validity of the positional readings from the gps
[21:17] <laurenceb> a good input would be the pot off the servo
[21:17] <laurenceb> hadnt thought of that
[21:17] Action: jcoxon really needs to get the wireless card for his ibook instead of the silly usb one
[21:18] <edwardmoore> assuming you don't mind sticking all this data into a fairly sizeable input matrix
[21:18] <edwardmoore> for my purposes i'm keeping it to 2x2
[21:18] <edwardmoore> more PIC-friendly ;)
[21:18] <laurenceb> yes, gps and servo pot
[21:18] <edwardmoore> why servo pot sorry?
[21:18] <laurenceb> so we know what the rudder is doing
[21:19] whiteknight (n=jcoxon@jac208.caths.cam.ac.uk) joined #highaltitude.
[21:19] <edwardmoore> i think it'd be just as easy to keep that closed loop in the servo
[21:19] <laurenceb> kalman filters work off a physical model of the situation
[21:19] <edwardmoore> and maybe stick a gyro in to give some absolute feedback on what the rudder's doing
[21:20] <laurenceb> yes but nontheless it would be a good input to have
[21:20] <edwardmoore> fair enough
[21:21] rocketboy (n=steve@217.47.75.26) joined #highaltitude.
[21:22] <laurenceb> hyi there
[21:22] <phatmonkey> holy crap! 150mb
[21:22] <edwardmoore> hi
[21:22] <whiteknight> laurenceb, have you sent the email?
[21:22] <phatmonkey> i wonder if there's a size limit on the wiki
[21:23] <phatmonkey> there probably should be...
[21:23] <whiteknight> phatmonkey, i'll take laurence's pictures on my webspace
[21:23] <whiteknight> might as well use it
[21:23] <laurenceb> phatwonkey, can you get into the wiki and see where the video dissapeared to?
[21:23] <phatmonkey> pictures are great for the wiki, but maybe not 150mb videos!
[21:23] <edwardmoore> laurence do you know what the second picture on the wiki page is of?
[21:24] <icez> maybe we should split the video into parts
[21:24] <laurenceb> erm contrast correct it
[21:24] <icez> and upload it to youtube
[21:24] <icez> :p
[21:24] <laurenceb> erm we did
[21:24] <edwardmoore> on the left....
[21:24] <laurenceb> I've just joined them all up
[21:24] <edwardmoore> trying to make out what land mass that is
[21:25] <laurenceb> the video is good for working out whats what
[21:25] <laurenceb> but we can upload it grr
[21:25] <edwardmoore> so make it available :P
[21:25] <phatmonkey> google video
[21:25] <phatmonkey> that has unlimited length
[21:25] <whiteknight> my launch vids are on youtube
[21:25] <laurenceb> I've just trashed my webmail
[21:26] <laurenceb> I dont have a google account
[21:27] <laurenceb> ah finally uncrashed my pc
[21:29] <whiteknight> hehe
[21:30] <whiteknight> damn it
[21:30] Action: whiteknight hits jcoxon - go away
[21:30] <edwardmoore> right, back about 11ish
[21:32] <laurenceb> ok i'm uploading to your ftp
[21:32] <whiteknight> oh cool
[21:32] Action: whiteknight is jcoxon
[21:32] <icez> oh.
[21:32] <icez> i was confused for a bit
[21:32] <icez> :P
[21:33] <laurenceb> no it's too slow
[21:33] <icez> maybe if you send it over to me I can put it on my server
[21:33] <laurenceb> I will write everything to cdr and use a pc in the IT room
[21:33] <icez> through IRC or something
[21:34] <whiteknight> okay
[21:34] <laurenceb> they have faster internet but no irc
[21:34] <laurenceb> so I'll be back in an hour or so
[21:34] <laurenceb> bbl
[21:34] <icez> whiteknight, you know you can poke jcoxon out with nickserv?
[21:35] laurenceb (n=Laurence@cpc2-oxfd9-0-0-cust392.oxfd.cable.ntl.com) left irc:
[21:35] <whiteknight> i was just going to let it disappear
[21:36] jcoxon (n=jcoxon@jac208.caths.cam.ac.uk) left irc: Read error: 110 (Connection timed out)
[21:37] Nick change: whiteknight -> jcoxon
[22:22] <jcoxon> video is up
[22:23] <jcoxon> check laurence's wiki page
[22:27] <phatmonkey> what was the video recorded with?
[22:27] <icez> laurence's wiki page?
[22:28] <phatmonkey> oh and a note to all - no huge files on the wiki please, pictures are great though (a permanent central location is nice)
[22:28] <phatmonkey> i'll try and figure out how to add a limit some other time
[22:28] <phatmonkey> http://wiki.ukhas.org.uk/projects:mihab:mihab3_glider_master_unit
[22:30] <phatmonkey> http://wiki.splitbrain.org/plugin:gallery - nice, i'll install that
[22:35] <phatmonkey> somebody remind me to do that sometime
[22:35] <phatmonkey> need to get some homework finished
[22:35] <phatmonkey> doh
[22:40] <rocketboy> any sign of the GPS data yet?
[22:42] <jcoxon> henry uploaded a kml file
[22:42] <rikstah> http://www.srcf.ucam.org/~hmh33/ukhas1_tracker4.kml
[22:43] <jcoxon> thanks rikstah
[22:43] <jcoxon> i'm just watching the video
[22:43] <jcoxon> threre is an amazing moement about 10.25 in
[22:43] <phatmonkey> it'd be a neat idea to have kml files for all the flights on the wiki
[22:43] <jcoxon> like a pause
[22:43] <jcoxon> and then it starts to move again
[22:43] <rikstah> jcoxon, video?
[22:44] <jcoxon> yup
[22:44] <rikstah> url?
[22:44] <jcoxon> http://www.pegasushabproject.org.uk/UKHAS1_video.wmv
[22:44] <rikstah> cool
[22:44] <rikstah> where's the pics at
[22:46] <jcoxon> they are on there way
[22:46] <rikstah> cool stuff
[22:46] <jcoxon> though there are 2 on: http://wiki.ukhas.org.uk/projects:mihab:mihab3_glider_master_unit
[22:47] <rikstah> wow nice, how high did it get
[22:47] <rikstah> its fucking amazing to see the sky change to space
[22:47] <icez> cool video (yet)
[22:47] <jcoxon> umm gps says 24km
[22:47] <icez> it jumped from the ground to the sky in 0 seconds:\
[22:47] <rocketboy> given apogee is about 24000 what did henry think of cutdown?
[22:48] <jcoxon> rocketboy, it didn't fire
[22:48] <jcoxon> icez, oh its 7 secs every minute
[22:48] <icez> the sun is black :)
[22:48] <rikstah> if only it didnt spin round so much
[22:49] <rocketboy> BTW my cutdown worked - I had it hanging out the side and it had fired
[22:49] <jcoxon> excellent
[22:49] <rikstah> yeah why is the sun black
[22:49] <icez> so "UKHAS 1" is multiple balloons being launched?
[22:49] <icez> rikstah, too white maybe..:p
[22:49] <rikstah> icez, no multiple payloads
[22:50] <icez> so why was there multiple cutdowns?
[22:50] <icez> :/
[22:50] <jcoxon> oh to test them
[22:50] <jcoxon> rocketboy's wasn't attached to anything
[22:50] <jcoxon> it was just to see if it would fire
[22:50] <icez> oh ok
[22:51] <rikstah> shame really ;)
[22:52] <icez> still cool with the black sun :)
[22:54] <icez> well I'm glad I wasn't holding the camera
[22:54] <icez> I'd be so sick :p
[22:56] <rikstah> i love that the payload is bright orange and says "harmless experiment"
[22:56] <rikstah> i'd be wary as fuck if that landed in my garden
[22:56] <icez> lol
[22:56] laurenceb (n=Laurence@cpc2-oxfd9-0-0-cust392.oxfd.cable.ntl.com) joined #highaltitude.
[22:56] <laurenceb> hi again
[22:56] <icez> "oh yeah we found the payload..but the police destroyed it because they thought it was a bomb.."
[22:56] <icez> :P
[22:56] <icez> hi laurenceb
[22:56] <laurenceb> it's all online!
[22:57] <icez> on the wiki?
[22:57] <laurenceb> yes
[22:57] Action: icez gives the "Spinner's Award" to the UKHAS 1 launch team.
[22:57] <icez> :/
[22:57] <laurenceb> the mpegs are better than the big wmv but only just
[22:57] <icez> the video is cool.
[22:57] <laurenceb> yes it was spinning too fast
[22:58] <icez> and with the black sun it's even cooler
[22:58] <laurenceb> need some untwisted line
[22:58] <laurenceb> you could try slowing it to 1/2 speed
[22:58] <icez> oh I could do that.
[22:58] <icez> aww the descent isn't in the video?:(
[22:59] <laurenceb> yes batteries ran out at 1hour 50 minutes
[22:59] <laurenceb> they were only designed to last 1 hour 45
[22:59] <laurenceb> I will hack my camera to take AA s
[23:00] <rikstah> jcoxon, i just saw that spin change
[23:00] <rikstah> wonder how that happened
[23:00] <rocketboy> thats an amazing track - almost due west then back due east
[23:00] <laurenceb> yes I didnt realise it did that
[23:02] <laurenceb> I'm thinking of "ULTRAHAB"
[23:02] <laurenceb> 1200gram balloon
[23:02] <rocketboy> there must be some wind-shere at the inteface
[23:02] <laurenceb> with very high quality camera
[23:02] <laurenceb> and one payload with camera and radio like MiHAB2
[23:03] <laurenceb> aim for > 35km
[23:03] <rikstah> i dont know how to watch this kml file in google earth in linux, i loaded the file, but when i zoom in the map goes white, like going into cloud
[23:03] <laurenceb> and use one of those filters for the camera
[23:04] <rikstah> hmm there are ^M characters at the end of each line in the .kml
[23:04] <rikstah> might be that
[23:04] <laurenceb> rocketboy how about your photos?
[23:05] <rocketboy> yeah I have some
[23:05] <laurenceb> could you upload them?
[23:06] <rocketboy> I havn't decided where to put them up yet
[23:06] <laurenceb> jcoxon could you host them?
[23:06] <jcoxon> of course - if rocketboy wants to use the space
[23:06] <rocketboy> I have 2G of webspace
[23:06] <jcoxon> :-)
[23:07] <laurenceb> awsome
[23:07] <Golfgeo|away> I'm just watching the Mihab 3 video, but is there something wrong with it. The gondela seems to be bouncing around a bit to much...
[23:07] <rocketboy> so I'll probably put them there - I just need a album generating tool
[23:07] <rikstah> anyone else running googleearth on linux? i cant get the kml to display right
[23:07] Nick change: Golfgeo|away -> Golfgeo
[23:08] <laurenceb> gondelas bounce around like that anyway
[23:08] <jcoxon> i'm not sure - i think this bounced alot
[23:08] <rocketboy> I make the time to apogee 113mins? - so thats about 212m/min ascent rate?
[23:08] <jcoxon> it certainly was spin a lot just after launch
[23:08] <laurenceb> bear in mind its 6.3 second clips put together
[23:09] <Golfgeo> hmm. Still a bit hard to watch without grabbing hold of something...
[23:09] <laurenceb> yes lol
[23:09] <laurenceb> video sickness
[23:10] <Golfgeo> :-)
[23:10] <laurenceb> just glad I wasn't in the payload
[23:10] <Golfgeo> B.t.w. The sun did give nice images, no spikes in the "black buble"...
[23:11] <Golfgeo> *give == gave
[23:11] <Golfgeo> proberbly since the thing is spinning at mach ???
[23:11] <laurenceb> thats cuz its a cmos not a ccd?
[23:11] <icez> do you guys know how to slow down the video in VLC?:P
[23:12] <laurenceb> whats VLC?
[23:12] <Golfgeo> Does it play in VLC (not here...)
[23:12] <icez> it's a video player..
[23:12] <icez> it does here
[23:12] <Golfgeo> Hmm, thats wierd...
[23:12] <laurenceb> use vindows movie maker lol
[23:12] <icez> I would but that doesn't run on linux =]
[23:12] <rikstah> icez, use cinelerra
[23:13] <Golfgeo> I've been bleeding on CMOS chips too...
[23:13] <laurenceb> CMOS BDSM WTF???
[23:14] <Golfgeo> bdsm? bondage d? sado m...???
[23:14] <Golfgeo> :-P
[23:14] rocketboy (n=steve@217.47.75.26) left irc: "Leaving"
[23:14] <Golfgeo> sorry mate...
[23:14] <laurenceb> we scared rocketboy
[23:14] <Golfgeo> lol
[23:15] <jcoxon> yeah guys - lets stick on topic
[23:15] <icez> dah
[23:15] <icez> its right on the toolbar..
[23:15] Action: icez needs glasses.
[23:15] Action: Golfgeo uses epic4, textbased, so no toolbar...
[23:16] #highaltitude: mode change '+o jcoxon' by ChanServ!ChanServ@services.
[23:16] <laurenceb> you can see the humber estuary to the north
[23:17] Topic changed on #highaltitude by jcoxon!n=jcoxon@jac208.caths.cam.ac.uk: Welcome to #highaltitude - discuss anything to do with high altitude projects (balloons, gliders, etc) see http://www.ukhas.org.uk and the wiki: http://wiki.ukhas.org.uk , Latest launch: UKHAS 1, http://wiki.ukhas.org.uk/ukhas_1
[23:17] <laurenceb> on the second photo on the wiki
[23:17] <laurenceb> shouldn't that be latest crash
[23:18] <Golfgeo> But is it spinning bycause of the cable?
[23:18] <jcoxon> ummm i think the plan is to gloss over that element
[23:18] <jcoxon> though learn important lessons at the same time
[23:18] <laurenceb> yees, we need an untwisted cable
[23:19] <jcoxon> you'll always add some oscilation at launch
[23:19] <laurenceb> but you can always wist the cable, maybe add fins to damped it
[23:19] <laurenceb> I've seen similar on scientific balloons
[23:20] <jcoxon> right i'm off
[23:20] <jcoxon> night all
[23:20] jcoxon (n=jcoxon@jac208.caths.cam.ac.uk) left irc: "Leaving"
[23:20] <laurenceb> cy
[23:20] <Golfgeo> ic. otherwise use a "wartel" (in Dutch) and somesort of fin so the wind keeps it steady
[23:21] <Golfgeo> wartel image (I don't know the English word) : http://www.joostdevree.nl/bouwkunde/wartel_3_bij_een_katrol_www_ubsails_nl.jpg
[23:21] lAURENCEB__ (n=Laurence@cpc2-oxfd9-0-0-cust392.oxfd.cable.ntl.com) joined #highaltitude.
[23:24] <lAURENCEB__> WOOPS IT SAYS sd car on the wiki
[23:24] <lAURENCEB__> I can't spell or type
[23:25] <lAURENCEB__> it shows how effective a glider could be
[23:25] <lAURENCEB__> that you can see to norther yorkshire on the photos
[23:26] <rikstah> the river looked cool
[23:26] <lAURENCEB__> thats the Thames
[23:27] <rikstah> ya
[23:27] <lAURENCEB__> I want to put a lidar on a balloon
[23:27] <lAURENCEB__> and or laser cutdown
[23:28] Nick change: Golfgeo -> Golfgeo|away
[23:28] <Golfgeo|away> bbl
[23:29] <rikstah> you should make a decent article and submit it to digg
[23:30] <phatmonkey> lAURENCEB__, remember there's barely any air up there, it's just going to plummet!
[23:31] <rikstah> hah!
[23:31] <phatmonkey> http://wiki.ukhas.org.uk/projects:ukhas_glider_project - is it that glider you're talking about or your own project?
[23:31] <lAURENCEB__> yes but once it gets up to very high speed
[23:32] <phatmonkey> rikstah, james and CUSF have been up on digg many times
[23:32] <rikstah> cool
[23:32] <phatmonkey> lAURENCEB__, yeah. art whatsisname's glider seems to show the glider pulling out of dives pretty early
[23:32] <lAURENCEB__> have you rikstah?
[23:33] <lAURENCEB__> http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=200075783673&ssPageName=MERC_VIC_RUPX_BID_Stores_IT&refitem=200075190139&itemcount=4&refwidgetloc=closed_view_item&usedrule1=UpSell_LogicX&refwidgettype=cross_promot_widget
[23:33] <lAURENCEB__> sorry huge url, that would be good on a payload
[23:34] <phatmonkey> funny you should say that, somebody i was talking to suggested serial over laser as communication
[23:34] <phatmonkey> don't know about lining them up though...
[23:35] <lAURENCEB__> yes lol
[23:35] <lAURENCEB__> I tried it for analogue audio
[23:35] <lAURENCEB__> and just across my garden was a pain
[23:38] <lAURENCEB__> omg
[23:38] <lAURENCEB__> http://cgi.ebay.co.uk/BRAND-NEW-250MW-GREEN-LASER-POINTER-20USD-GIFT_W0QQitemZ200074778814QQihZ010QQcategoryZ14954QQrdZ1QQssPageNameZWD2VQQcmdZViewItem
[23:39] <lAURENCEB__> you could kill people with this
[23:39] laurenceb (n=Laurence@cpc2-oxfd9-0-0-cust392.oxfd.cable.ntl.com) left irc: Read error: 110 (Connection timed out)
[23:40] <lAURENCEB__> would make an insane cutdown
[23:40] Nick change: lAURENCEB__ -> laurenceb
[23:40] <phatmonkey> laurenceb, are you involved with the ukhas glider project?
[23:40] <phatmonkey> i really need to get some sleep, euch
[23:40] <laurenceb> not really, but not a lot is going on
[23:41] <laurenceb> I'll work on my project for the time being
[23:42] <phatmonkey> yeah
[23:42] <phatmonkey> i'd love to help to move it along a bit, but i have no time at all
[23:42] <laurenceb> need either 4hz gps or something clever like rate gyro or kalman filtering
[23:43] <laurenceb> and id be sorted
[23:43] <laurenceb> I've already don e most of the preliminary work on it
[23:43] <phatmonkey> for attitude?
[23:43] <laurenceb> erm 4 yaw
[23:43] <laurenceb> no pitch control
[23:44] <laurenceb> just a rudder
[23:44] <phatmonkey> ah I see
[23:44] <phatmonkey> very sensible
[23:44] <laurenceb> same as the gps boomerang
[23:44] <phatmonkey> yeah
[23:45] <laurenceb> altho guy there claims it all runs off a 1hz gps
[23:45] <laurenceb> so I've already replicated what hes got
[23:45] <phatmonkey> must dash, cya
[23:45] <laurenceb> cya
[23:46] <laurenceb> I'm off then cya all
[23:48] laurenceb (n=Laurence@cpc2-oxfd9-0-0-cust392.oxfd.cable.ntl.com) left irc:
[23:54] Golfgeo|away (n=ice@x142235.fttd-s.tudelft.nl) left #highaltitude.
[23:54] Golfgeo|away (n=ice@x142235.fttd-s.tudelft.nl) joined #highaltitude.
[23:57] <hmh33> hi again
[23:57] Action: hmh33 is confused
[23:58] <hmh33> my radio transmitted board works perfectly if you touch a scope probe to any of the input pins on the PIC
[23:58] <hmh33> transmitter*
[23:58] <hmh33> not if you touch a finger to it
[23:58] <hmh33> or anything else
[23:58] <hmh33> the scope probe has some ridiculously high impedance
[00:00] --- Mon Feb 5 2007