highaltitude.log.20140418

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[06:21] <Reb-SM3ULC> morrn
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[07:00] <Andy-G4MYS> Good morning all
[07:05] <sp2ipt> hi
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[08:11] <SP3OSJ> #habhub
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[09:18] <sp2ipt> LeoBodnar: how do you get a permission to use specified freq in UK for airbone stations and how the freqs are chosen? It's rather weird u can't use the band which should be available for almost anything.
[09:19] <LeoBodnar> you can't use amateur radio airborne in UK
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[09:19] <LeoBodnar> you can use ISM band 434.xxxMHz with <= 10mW power
[09:20] <LeoBodnar> it's pain in the arse but we are all playing by the rules
[09:21] <LeoBodnar> Arthur has been told about this many many times
[09:21] <sp2ipt> weird but guess every country has it's own law problems
[09:21] <LeoBodnar> yep
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[09:28] <sp2ipt> did you actually had any problems with people violating this regulation? ;)
[09:28] <Upu> not the point
[09:28] <sp2ipt> of course, I'm just curious that's all
[09:29] <Upu> but yes
[09:29] <Upu> had some clueless idiots launch without an NOTAM with a Byonics APRS
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[09:46] <eroomde> one should go easy on throwing allegations of idiocy around with respect to conducting flights responsibly (which is a different thing to conducting them legally)
[09:48] <Laurenceb> in b4 but...
[09:48] <Laurenceb> i was wondering about the safety aspects of significant amounts of explosives being airborne
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[09:49] <Laurenceb> jet engine ingestion could be interesting
[09:49] <eroomde> depends on the definition of 'significant' i guess
[09:49] <eroomde> i don't think anything on a hab would particularly change the enthalpy inside a jet engine combustion chamber
[09:50] <Laurenceb> it could trash the compressor
[09:50] <eroomde> sure
[09:50] <eroomde> but not because of explosives
[09:50] <Laurenceb> but i think that would happen anyway i guess
[09:50] <Laurenceb> yeah
[09:50] <eroomde> they'll hardly do anthing
[09:50] <eroomde> it'd just by the fact that it's a solid object
[09:50] <eroomde> any compressor fan blades are designed to ingest solids to an extent
[09:51] <eroomde> we've all seen the frozen-chicken-canon testing
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[09:53] <eroomde> https://www.youtube.com/watch?v=y2OS2pwrZTI
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[10:11] <saadzmirza> Hello. KD2FZW here.
[10:11] <saadzmirza> Anyone here?
[10:11] <craag> Yep :)
[10:12] <saadzmirza> I'm the project manager of Marathon to the Sky, an HAB project at Olean High School.
[10:12] <saadzmirza> *a
[10:13] <eroomde> welcome
[10:13] <craag> Cool name
[10:13] Action: SpeedEvil wishes it hadn't changed its name to snickers.
[10:13] <eroomde> and a respectable altitute to shoot for!
[10:14] <saadzmirza> Yeah.
[10:14] <saadzmirza> I've been on here before, I just feel a bit overwhelmed.
[10:14] <eroomde> :)
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[10:14] <saadzmirza> We were in the GSBC, but we pulled out due to a lack of time. Better to test and feel comfortable with it instead of launching quickly, no?
[10:14] <eroomde> lots of active flyers, lots of armchair discussions about crazier possible missions, etc, but the basics are well understood and this is the place to be to find out about rhem
[10:15] <eroomde> certainly yes
[10:15] <eroomde> best to be methodical and ensure you've tested
[10:15] <eroomde> you live or die by testing
[10:15] <eroomde> unless you're a rare one who's so good you can forsee and catch all your problems at the design stage
[10:15] <eroomde> (I'm not)
[10:15] <SpeedEvil> Only die if it goes very wrong.
[10:15] <saadzmirza> Alright. So we are assembling a payload of 200g or less, and using pieces of low density rigid foam insulation. How do we hold the pieces of foam together?
[10:16] <eroomde> duct tape is popular
[10:16] <SpeedEvil> A) tape
[10:16] <saadzmirza> but very heavy
[10:16] <SpeedEvil> B) carve out of a big bit
[10:16] <eroomde> is it heavy?
[10:17] <saadzmirza> For tape, yes.
[10:17] <saadzmirza> Here's some pics of our progress: https://www.facebook.com/marathontothesky
[10:17] <eroomde> i like the alumized inside
[10:17] <eroomde> that's smart
[10:18] <eroomde> i don't think you'll get much lighter than duct tape though
[10:18] <saadzmirza> Alright. Duct tape is the de facto solution for everything anyway...
[10:18] <eroomde> another thing, though perhaps not worth it if you've already made the box, is the strength and fitting advatantages from putting 45 degree bevels on the edge of the foam
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[10:19] <saadzmirza> Metal? @eroomde
[10:19] <eroomde> you can then also use some glue on those edges
[10:19] <adamgreig> phoar, 4kg latex balloon?
[10:19] <saadzmirza> Yep.
[10:19] <eroomde> nice
[10:19] <saadzmirza> We have a very high budget :)
[10:19] <adamgreig> with a 200g payload?
[10:19] <saadzmirza> Yep
[10:19] <adamgreig> a high gas budget I hope :P
[10:19] <saadzmirza> Maybe even H2
[10:19] <adamgreig> are you intending to get this back?
[10:19] <adamgreig> go big or go home, right
[10:20] <saadzmirza> We have the gas paid for by a local gas supply company - only problem is that they don't want to give us He, not H2
[10:20] <adamgreig> uh.. they don't want to give you He or H2?
[10:20] <saadzmirza> Sorry - mistype
[10:20] <adamgreig> and having the local gas company sponsor you is definitely the way forward
[10:20] <eroomde> yeah very neat
[10:20] <saadzmirza> They are willing to give us He, not H2
[10:20] <adamgreig> fair enough
[10:20] <fsphil> that's a big balloon
[10:20] <saadzmirza> It was about $900 USD
[10:21] <adamgreig> woah
[10:21] <fsphil> I hope it does the trick!
[10:21] <adamgreig> who from?
[10:21] <saadzmirza> Kaymont thorugh Totex...It's the TA4000
[10:21] <eroomde> we got a letter from BOC at work telling us not to worry that they're going to run out of helium
[10:21] <eroomde> but that it will be shotting up in price
[10:21] <eroomde> we don't use helium, and we don;t really use BOC, so no matter
[10:22] <saadzmirza> Well, we're not paying a cent for it, but true, He is a limited valuable commodity.
[10:22] <fsphil> well, *they're* not worrying
[10:23] <saadzmirza> Here's the spec sheet of the balloon - I hope it can do a lot better! https://www.dropbox.com/s/gx7vnb5k4msw1va/ta4000.pdf
[10:23] <adamgreig> haha, who's that at the bottom ;)
[10:24] <saadzmirza> Anyway this was calculated with a 5m/sec ascent rate. We are planning on closer to 3
[10:24] <saadzmirza> No idea, I actually got the link from here a few weeks ago.
[10:24] <fsphil> lol
[10:24] <fsphil> he's EVERYWHERE
[10:24] <craag> hehe
[10:24] <saadzmirza> Who?
[10:24] <adamgreig> jeez. the online calc only goes up to 3000g at that
[10:24] <eroomde> i don't really rate those big ones for altitude
[10:25] <eroomde> just for heavy lifting
[10:25] <saadzmirza> Why?
[10:25] <eroomde> they don;t seem to be made as consistently as the smaller ones
[10:25] <eroomde> perhaps because of volume
[10:25] <fsphil> diminishing returns
[10:25] <eroomde> (of sales)
[10:25] <saadzmirza> Or the huge surface area of rubber
[10:25] <craag> adamgreig: pull req time?
[10:25] <saadzmirza> Higher chances of imperfections
[10:25] <fsphil> you'd think they'd put a bit of extra work in the larger balloons
[10:26] <saadzmirza> I hope they put more work on this one, considering the high price
[10:26] <eroomde> no one has got close to the altitude records set by the howyee 1600g balloons with a totex 3kg balloon
[10:26] <eroomde> not even broken 40km with one
[10:26] <saadzmirza> 0_0
[10:26] <eroomde> saadzmirza: nope, price will just be because they don;t make many
[10:26] <adamgreig> calc reckons (with manual burst diameter from the spec sheet) 45km-or-float
[10:26] <fsphil> even the 1600g's are variable
[10:26] <eroomde> not because of extra care
[10:26] <adamgreig> but yea
[10:26] <adamgreig> will be interesting to see what happens
[10:26] <saadzmirza> @adamgreig What calc are you using?
[10:27] <adamgreig> "the" calc, http://habhub.org/calc
[10:27] <saadzmirza> Oh, that was obvious.
[10:27] <adamgreig> if you click Constants you can override the burst diameter
[10:27] <adamgreig> but yea
[10:27] <adamgreig> not sure how much I'd trust it at this extreme of balloon size and altitude
[10:28] <adamgreig> (not sure how much i'd trust it on a good day, either, but here we are)
[10:29] <fsphil> it'll be interesting no matter what the altitude
[10:29] <eroomde> interesting to fill
[10:29] <eroomde> there's a large sail area in those things
[10:30] <fsphil> you could use a large balloon like that as a ZP balloon
[10:30] <fsphil> leave the bottom opened
[10:31] <eroomde> did that once
[10:31] <adamgreig> yea you want a barn or a rather still day :P
[10:31] <fsphil> if it's tall enough would the helium leak out?
[10:31] <adamgreig> the 1600s are bad enough
[10:31] <eroomde> 1600 being filled
[10:31] <eroomde> http://regmedia.co.uk/2014/04/15/punch_launch_02_big.jpg
[10:32] <eroomde> 3000g totex being filled
[10:32] <eroomde> https://www.dropbox.com/s/ladar503wepcp8o/CIMG0031.JPG
[10:32] <fsphil> 1600g being underfilled: https://secure.flickr.com/photos/fsphil/8337667740/in/set-72157632412409312
[10:33] <eroomde> looks like an action shot from a pillow fight
[10:33] <saadzmirza> Sorry guys I had to use the bathroom
[10:33] <eroomde> we all need that bathe every now and then
[10:33] <saadzmirza> I don't think the ZP idea would work well. Don't these latex balloons degrade under UV light?
[10:34] <fsphil> they do
[10:34] <eroomde> yes
[10:34] <eroomde> fsphil: v nice filling area
[10:34] <fsphil> though how quickly I'm not sure
[10:34] <eroomde> that's gotta be a huge help
[10:34] <fsphil> eroomde: it is amazing. though if I change to H2 I might not be able to use it
[10:35] <eroomde> h2 scares people more than it should, really
[10:35] <eroomde> it's the thing i'm probably most happy to work with day-to-day, comapred to everything else we use as propellants
[10:36] <eroomde> it doesn't really have any hidden tricks (apart from the flame being IR rather than visible)
[10:36] <eroomde> and lights cleaning, its reaction time isn't too fast
[10:36] <saadzmirza> How about this for a crazy idea - A rockoon: an H2 balloon lifting a rocket, which compresses the balloon's H2, cools it with a bottle of refrigerant, and fires in to create a Liquid hydrogen rockoon
[10:36] <fsphil> if there was a leak I'd be afraid of it gathering on the roof
[10:36] <saadzmirza> I feel like this wouldn't work
[10:37] <eroomde> n2o can occassionally detonate itself, ammonia stinks, hydrazine gives you cancer, MON dissolves your lungs
[10:37] <fsphil> I've thought about using a compressor to control a balloons lift
[10:37] <eroomde> fsphil: yes that's fair enough - we keep fans running in the bays
[10:37] <eroomde> at roof height
[10:37] <fsphil> heavy beasties though
[10:37] <eroomde> saadzmirza: it probably wouldn't work
[10:37] <saadzmirza> Anyone have any ideas to break the Karman line?
[10:37] <eroomde> but that's not to say it's a bad diea
[10:38] <eroomde> you'd just need a lot of hydrogen
[10:38] <eroomde> and it takes quite a lot of energy (batteries?) to compress
[10:38] <fsphil> easier to send it up compressed
[10:38] <saadzmirza> That makes sense, but then you might as well use a solid rocket motor.
[10:38] <fsphil> or some kind of solar powered compressor
[10:39] <eroomde> LH2 has a desnity about 1/14th water
[10:39] <fsphil> which would probably be very slow
[10:39] <eroomde> so although a given mass of LH2 and LOX, used as fuels, will give you better impulse than any other combo, that amount might actually need a fuel tank that's 8 times bigger that the comparative lox/kerosene (or whatever) one
[10:40] <eroomde> and the drag from the cube/square law works especially against you for small rockets
[10:40] <saadzmirza> There's not much drag at 30KM, no
[10:40] <saadzmirza> ?
[10:40] <eroomde> so basically, LH2 is cool for big rockets or when drag doesn't matter, like upper stages which are used once out of the atmosphere
[10:40] <eroomde> yeah you're right
[10:40] <eroomde> sop it would be ok-er then
[10:41] <fsphil> max-q of the shuttle was at about 11km
[10:41] <eroomde> but you're still in the rough end of the cube/sqare law, so drag is still non-trivial
[10:41] <saadzmirza> So it's better for larger rockets
[10:42] <saadzmirza> rather inefficient for smaller ones
[10:42] <fsphil> longer rockets
[10:42] <fsphil> make a very thin one
[10:42] <eroomde> that then gives you the problem of surface area to volume of the lh2 fuel tanks
[10:42] <eroomde> you'd get loads of boil off from heat transfer to the outside
[10:42] <fsphil> ah
[10:42] <fsphil> yes
[10:43] <eroomde> lh2 is quite a tricky customer :)
[10:43] <saadzmirza> How about a simple solid engine rockoon? Has this ever beened tried before?
[10:43] <saadzmirza> *been
[10:43] <eroomde> funny you mention
[10:43] <eroomde> hang around here for a while
[10:43] <eroomde> however, no one has done a decent one yet
[10:43] <eroomde> it's all up for grabs
[10:44] <eroomde> well, i think actually Bill Brown did something in the 90s
[10:44] <eroomde> this is all amateur btw, it's definitely been done by agencies
[10:44] <saadzmirza> Yeah, I'm no agency
[10:44] <eroomde> have a look: https://www.youtube.com/watch?v=fpWvBdvDSuY
[10:45] <fsphil> we don't count agencies, otherwise the balloon altitude record is 53km :)
[10:46] <fsphil> 53.7km now, http://www.blimpinfo.com/uncategorized/japan-sets-new-balloon-altitude-record/
[10:46] <fsphil> 3kg payload :)
[10:46] <saadzmirza> This? http://fly.hiwaay.net/~bbrown/rockoon.htm
[10:47] <eroomde> 2.8 microns
[10:47] <fsphil> https://www.youtube.com/watch?v=eFp2Gg3cyTo
[10:47] <eroomde> wow
[10:47] <saadzmirza> "We estimate our peak altitude at 38 nautical miles"
[10:48] <saadzmirza> That's over 70KM
[10:48] <adamgreig> eroomde: oh nice, I hadn't seen that video before
[10:49] <eroomde> it was only released 5 days ago
[10:49] <eroomde> there's stuff from westcott too
[10:49] <eroomde> when it was the Rocket Propulsion Establishment
[10:50] <eroomde> http://youtu.be/NYAjSR6NmC4?t=2m17s
[10:50] <fsphil> wow, cool launch
[10:50] <eroomde> P-site testing the RZ-2
[10:50] <fsphil> the ultimate cut-down device
[10:50] <eroomde> and later there's some of J-site testing gas generators
[10:52] <saadzmirza> wow
[10:52] <eroomde> at 4:40 there's a demo of the flag system that we still use to this day
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[10:52] <eroomde> yellow for testing, red explosive propellants, red and yellow for testing explosive propellants
[10:55] <eroomde> saadzmirza: Van Allen also did rockoon work to explore space radiation, like his eponymous belts
[10:55] <eroomde> http://en.wikipedia.org/wiki/File:Rockoon_Van_Allen.jpg
[10:56] <saadzmirza> This was all in the 1950s, no?
[10:56] <eroomde> yep
[10:56] <eroomde> v little work done on rockoons since then
[10:56] <eroomde> i guess people want to launch sats now
[10:57] <eroomde> and rockoons are not really much good for orbit
[10:57] <eroomde> and sounding rockets from the ground are fairly established
[10:57] <saadzmirza> and expensive
[10:57] <eroomde> yep
[10:58] <eroomde> though that's where some amateur cunning can really shine
[10:58] <saadzmirza> I hope some amateur tries it. 100KM couldn't be too diffucult, could it?
[10:58] <eroomde> just hang around for a bit saadzmirza :)
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[10:59] <saadzmirza> view from 100km (apollo 11) http://robertg69.files.wordpress.com/2009/07/remembering-apollo-11-the-big-picture-boston-com-1.jpg?w=700
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[11:02] <adamgreig> looks a lot like 40k :P
[11:03] <saadzmirza> Earth is ig.
[11:03] <saadzmirza> *ig
[11:03] <saadzmirza> *big
[11:03] <eroomde> yep
[11:03] <eroomde> though one of the things a hab project hammers home is just how thin the atmosphere is
[11:04] <saadzmirza> Compared to the actual planet
[11:04] <saadzmirza> https://www.youtube.com/watch?v=Q2qyLl7UhDk
[11:05] <eroomde> http://www.nivnac.co.uk/files/HAPS/HAPS1_withvideo_polar_thumb.jpg
[11:05] <eroomde> that was a stitch-up of a bunch of photos from our flight
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[11:06] <eroomde> not much there
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[11:08] <eroomde> anyway, time for a drink
[11:08] <eroomde> good chatting saadzmirza, do stick around and keep us posted on how it goes
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[11:08] <saadzmirza> Yep will do
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[11:15] <Willdude123> Is it a bad idea to have my receiver circuit on a breadboard?
[11:15] <mattbrejza> well the worst thing to happen is that it wont work
[11:16] <mattbrejza> im sure the earth will keep spinning etc :P
[11:16] <Willdude123> So its worth a try?
[11:16] <mattbrejza> sure
[11:16] <Willdude123> I mean like as opposed to doing it the book way, which is terminal strip
[11:16] <gonzo_p> it's low freq rx?
[11:16] <mattbrejza> it might take a bit of luck and good placement
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[11:27] <Laurenceb_> wow
[11:28] <Laurenceb_> those 4Kg balloon actually say >40Km in the spec sheet
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[11:46] <Upu> just
[12:09] <eroomde> it'll be interesting to watch. the 3kgs underdelivered on burst diameter
[12:09] <eroomde> they were really just good for heavy-lifting
[12:10] <eroomde> 10-15kg up to 25-30km, those were your guys
[12:12] <eroomde> nats`: ping
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[12:27] <iain_g4sgx> Wow, been away a while. Leo's floaters now in the middle east.. How are tracked ? APRS?
[12:27] <eroomde> yes
[12:28] <iain_g4sgx> Will aprs.fi have more info on the receivers?
[12:30] <eroomde> dk
[12:33] <malgar> after our notam request has been denied many times, finally our CAA seems to let us launch :)
[12:33] Action: malgar happy
[12:34] <malgar> but I still have to see the written notam
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[12:49] <fsphil> finally some good news malgar
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[12:59] <fsphil> oh dear, http://www.bbc.co.uk/news/uk-england-27066454
[13:02] <Laurenceb_> "A hi-tech balloon"
[13:02] <Laurenceb_> lol
[13:04] <Darkside> >high-tech balloon
[13:04] <Darkside> >lost
[13:04] <Darkside> and it did seem to have a tracker
[13:04] <Darkside> ahh dear
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[13:05] <mattbrejza> "The box may still be emitting a radio signal every five seconds at 434.65Mhz." not afte ra week...
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[13:19] <malgar> is there someone from randomsolutions here? my email has just returned back
[13:22] <DL7AD_mobile> malgar Rocketboy is doing this shop
[13:22] <DL7AD_mobile> But he isnt on tge irc very often
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[13:34] <malgar> is the power given through usb? http://ava.upuaut.net/store/image/cache/data/habamp2-500x500.jpg
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[13:37] <sp2ipt> malgar: as you can see - USB port can give up to 500 mA which gives abd. 2,5 W
[13:38] <malgar> ok
[13:38] <sp2ipt> malgar: sometimes you can even get much more current but it's out of spec
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[15:33] <DL7AD> we got one station in new delhi
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[15:36] <Laurenceb_> http://ready.arl.noaa.gov/hypubout/140326_trj001.gif
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[15:44] <DL7AD> Geoff-G8DHE: ping
[15:49] <Geoff-G8DHE> pong
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[17:27] <SpeedEvil> https://www.youtube.com/watch?v=0UjWqQPWmsY - sexy.
[17:28] <SpeedEvil> (falcon 9R test vehicle ascent to 250m)
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[17:44] <DL7AD> Geoff-G8DHE: how far did b-45 travel?
[17:44] <DL7AD> do you have calculations?
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[17:59] Action: mfa298 spies a wild B-46
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[18:00] <Lunar_Lander> evening
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[18:08] <DL7AD> hi Lunar_Lander
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[18:11] <Reb-SM3ULC> mfa298: :)
[18:12] <Lunar_Lander> hi DL7AD
[18:12] <mfa298> looks to be a good strong signal and it's heading this way :) (at least for now)
[18:12] <mattbrejza> it appears theres been no windows updates since the last leo flight :P
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[18:13] <mfa298> I did wonder is astra had been on since the last leo flight
[18:13] <LeoBodnar> lol
[18:14] <LeoBodnar> forensics
[18:15] <mattbrejza> it needs to be connected to the websdr and autotune to any potential rtty signals
[18:17] <g0pai_ian> QRG 500?
[18:17] <mfa298> I don't think any other frequency is in Leo's vocabulary :p
[18:18] <g0pai_ian> R, memory failure this end.
[18:19] <eroomde> that's a feature of R i think
[18:20] <mattbrejza> we need a q code bot
[18:20] <mattbrejza> add it to si
[18:20] <mattbrejza> sibot
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[18:49] <g0pai_ian> ACP131 series (Allied Communications publication)
[18:50] <LeoBodnar> i vote for Q-bot
[18:51] <g0pai_ian> What no Z-bot?
[18:52] airguzzler (568dbbc6@gateway/web/freenode/ip.86.141.187.198) joined #highaltitude.
[18:53] <g0pai_ian> What is the technical upgrade from B-45 to B-46, if there is one, Leo?
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[18:53] <LeoBodnar> some incremental APRS stuff
[18:53] <LeoBodnar> timestamp to integrate into HAB telemetry
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[18:53] <LeoBodnar> flight log via APRS, etc
[18:53] <LeoBodnar> *not tested!
[18:54] <LeoBodnar> Does Z-bot claulate impedance?
[18:54] <g0pai_ian> Ah, yes that was an APRS issue discused . . . In test now!
[18:55] <g0pai_ian> Ha, missed that one, Q code and Z code, but I guess you sussed that :)
[18:56] Nick change: BitEvil -> SpeedEvil
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[19:05] <pb1dft> Hmm some local qrm on 434.500
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[19:14] <SpeedEvil> http://www.spacex.com/webcast/ - go for terminal count - 12 minutes to go
[19:17] <eroomde> ta SpeedEvil
[19:17] <Hiena> I'm watching thata.
[19:17] <eroomde> i shall watch this with interest
[19:17] <Upu> yup ta
[19:18] <eroomde> shame u can't turn of chat on the right
[19:18] <eroomde> or can you?
[19:18] <Upu> yeah
[19:18] <Hiena> I hopes they will show the 1. stage landing.
[19:18] <Upu> hit the maximise button Ed
[19:18] <Upu> opens in a new window
[19:18] <Upu> then just f11
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[19:18] <eroomde> fanks
[19:19] <Upu> delayed by 25secs
[19:19] <eroomde> heater on stage 2
[19:19] <eroomde> taking notes
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[19:20] <Upu> that Dragon capsule can they man it yet ?
[19:20] <gb73d> geting ready 4 launch
[19:20] <gb73d> lookin god
[19:20] <gb73d> good
[19:20] <eroomde> they can man it technically
[19:21] <Upu> true story : somewhere at SpaceX are a few of my GPS modules
[19:21] <eroomde> but that's the easy bit vs getting it qualified to nasa's satisfaction
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[19:22] <eroomde> so they pressurise the tanks up before retractinging the tower to give the thing more stiffness
[19:22] <Reb-SM3ULC> Upu: cool :)
[19:22] <eroomde> some of the early ICBMs couldn't actually stand up if the tanks were unpessurised, they were really just stainless steel balloons
[19:22] <SpeedEvil> I wonder if they have an official 'here's how you shouldn't evacuate ISS in an emergency using Dragon'.
[19:22] <SpeedEvil> manual
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[19:23] <eroomde> supergreen
[19:25] <Upu> note the water going
[19:26] <eroomde> did you see the green flash at startup?
[19:26] <Upu> nope
[19:26] <Upu> what was that ?
[19:26] <eroomde> hypergolic slug of nasty properllant fired into the chamber to get it lit
[19:26] <Upu> oh
[19:27] <eroomde> oh stage separation view
[19:27] <eroomde> nice
[19:28] <SpeedEvil> I love the 'fire flower'
[19:28] <Upu> look at that glow
[19:30] Action: SpeedEvil crosses fingers.
[19:31] <eroomde> wonder why it has streaking in the glowing pattern
[19:31] <SpeedEvil> Iwould guess that's the end of the actual actively cooled bell.
[19:32] <SpeedEvil> It'll then be joined to the radiation cooled - and any tiny assymetries in the thrust will give you a streak
[19:32] <eroomde> sure but it's the cause of the aymetries i'm interested in
[19:32] <SpeedEvil> Maybe also tiny assymetries in the bell
[19:33] <eroomde> usually you get streaking patterns from injectors
[19:33] <eroomde> but this is a pintle injector, i think, which shouldn't really do that
[19:33] <eroomde> vs a showerhead injector where you'd expect that
[19:33] <SpeedEvil> :)
[19:34] <eroomde> i'd rather watch this 1st stage video
[19:35] <SpeedEvil> yeah
[19:35] <SpeedEvil> I mean - this is interesting
[19:35] <SpeedEvil> But the latter bits are kin of similar
[19:35] <SpeedEvil> d
[19:35] <SpeedEvil> Well - hopefully
[19:36] <SpeedEvil> Woo!
[19:36] <SpeedEvil> First stage live video wouldbe great
[19:36] <Reb-SM3ULC> oops, the dropped something
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[19:41] <eroomde> oh well, that was interesting
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[19:42] <Hiena> Dang, no landing video...
[19:42] <DL7AD> nats`: ping
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[19:43] <SpeedEvil> Sigh.
[19:43] <SpeedEvil> Oh well - it'll pop up in the next weeks. :/
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[19:45] <nats`> DL7AD yes
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[19:45] <nats`> I see the tracker
[19:45] <DL7AD> nats`: B-46 coming
[19:45] <nats`> but I can't track it unless it comes on south of paris
[19:46] <nats`> my side of view is really limited here :\
[19:46] <nats`> if it cross near le mans blois or in this area I can get it
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[20:10] <Reb-SM3ULC> what fq for sp3osj=
[20:10] <Reb-SM3ULC> ?
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[20:12] Nick change: Geoff-G8DHE_ -> Geoff-G8DHE-M
[20:13] <Reb-SM3ULC> ah, found mail
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[20:21] <Willdude123> ping mikestir
[20:22] <mikestir> pong Willdude123
[20:23] <Willdude123> mikestir, mind taking a look at my eagle?
[20:23] <Willdude123> That being the software, not the bird
[20:23] <mikestir> sure. do you want to set up a joinme?
[20:24] <Willdude123> Sure
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[20:24] Action: Willdude123 closes all the tabs he doesn't want mikestir to see
[20:24] <Willdude123> :)
[20:25] <Willdude123> mikestir, pm as not to clutter the channel?
[20:25] <mikestir> ok
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[20:33] <OZ1SKY_Brian> Hi. What freq is SP3OSJ at?
[20:34] <OZ1SKY_Brian> ah 144.700, just had to look at the flights
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[20:35] <Reb-SM3ULC> OZ1SKY_Brian: gokväll!
[20:35] <OZ1SKY_Brian> tjena
[20:35] <Reb-SM3ULC> http://ready.arl.noaa.gov/hypubout/144099_trj001.gif
[20:36] <OZ1SKY_Brian> ah looking good for your path Reb.
[20:37] <jcoxon> evening all
[20:37] <SA6BSS> kul, trodde den skulle svänga väster ut över skåne o gå mot uk, hoppas den håller sin nordliga kurs :)
[20:38] <OZ1SKY_Brian> Evening jcoxon
[20:39] <OZ1SKY_Brian> can we get a current freq from poland pse?
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[20:44] <Geoff-G8DHE> Think I'll have to leave a permanent watch on 434.5 for Leo's flights!
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[20:45] <Reb-SM3ULC> OZ1SKY_Brian: have alerted people at ham.se
[20:45] <Reb-SM3ULC> OZ1SKY_Brian: at parents place (sm3cbr) i gävle, straight under path tomorrow
[20:46] <Reb-SM3ULC> Geoff-G8DHE: i like the use of rsid.
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[20:49] <eroomde> during the reign of king edward
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[20:52] <Reb-SM3ULC> SA6BSS: gokväll, missade din kommentar, farsan kom å störde
[20:56] <SA6BSS> hehe, ok.
[20:56] <Reb-SM3ULC> SA6BSS: sitter å lyssna på 40m via en direktsamplad dvb-pinne kopplad till 2m beam, lagom optimalt
[20:56] <SA6BSS> not :)
[20:57] <Reb-SM3ULC> SA6BSS: men har lite saker preppat till imorgon ifall ballongen tar sig hit
[20:57] <Reb-SM3ULC> SA6BSS: dock sjukt hur bra det blev med moddad pinne
[20:59] Nick change: DL7AD_ -> DL7AD
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[21:09] <sp2ipt> OZ1SKY_Brian: 144,700
[21:09] <sp2ipt> OZ1SKY_Brian: I've had if 3kHz down
[21:09] <OZ1SKY_Brian> sp2ipt thanks for the info
[21:10] <Geoff-G8DHE> B-45 total flight path length is 11,157Km
[21:10] <Geoff-G8DHE> -14.486,41.122,6042
[21:10] <Geoff-G8DHE> -15.045,41.228,5980
[21:10] <Geoff-G8DHE> -15.592,41.346,5904
[21:10] <Geoff-G8DHE> -16.125,41.469,5828
[21:10] <Geoff-G8DHE> -16.662,41.586,5796
[21:10] <Geoff-G8DHE> -17.247,41.692,5822
[21:10] <Geoff-G8DHE> -17.894,41.781,5874
[21:10] <Geoff-G8DHE> -18.579,41.855,5937
[21:10] <Geoff-G8DHE> -19.298,41.911,6052
[21:10] <Geoff-G8DHE> Duh wrong key!
[21:11] <sp2ipt> OZ1SKY_Brian: np, do you know the transmission parameters?
[21:11] <OZ1SKY_Brian> sp2ipt i hear cw
[21:11] <Geoff-G8DHE> B-45 total flight path length is 11,175Km http://360.g8dhe.net/HAB_Flights/2014_Flights/B-45_20140411/B-45%20Flight%20Path.jpg
[21:12] <OZ1SKY_Brian> sp2ipt 100/450
[21:12] <sp2ipt> OZ1SKY_Brian: RTTY 100 baud, 450, 720 n2
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[21:12] <sp2ipt> 7n2 that is :)
[21:13] <OZ1SKY_Brian> yes :)
[21:13] <OZ1SKY_Brian> i see weak rtty traces
[21:13] <sp2ipt> OZ1SKY_Brian: good luck, I've lost it some time ago and now disconnected vertical antenna completely :)
[21:13] <Geoff-G8DHE> DL7AD, Its 11,175Kn Sven for B-45 http://360.g8dhe.net/HAB_Flights/2014_Flights/B-45_20140411/B-45%20Flight%20Path.jpg
[21:14] <sp2ipt> OZ1SKY_Brian: signal is really bad so don't panic if you can't decode it from the start, also don't forget to widen the filters to at least 250 Hz
[21:14] <OZ1SKY_Brian> sp2ipt thanks, 144.697 here
[21:15] <sp2ipt> OZ1SKY_Brian: yes it started at 700 but as the temperature dropped it shifted
[21:19] <Laurenceb> B-46
[21:19] <Laurenceb> omg balloon fest
[21:20] Action: arko spins a beat
[21:22] <DL7AD> Geoff-G8DHE: impressive
[21:22] <Geoff-G8DHE> http://ready.arl.noaa.gov//hypub/arlTraj.swf?client=gme-noaa&channel=OAR.ARL.HQ.HYSPLIT&dir=/hypubout/HYSPLITtraj_144285&data=/hysplit_metadata&ext=html
[21:22] <DL7AD> Geoff-G8DHE: this time we must get it direct east to china
[21:23] <Geoff-G8DHE> Been busy last couple of days in garden so not kept up to date! Off tyravelling next week but will be on here!
[21:23] <Laurenceb> lol ending up in the same place
[21:23] <Laurenceb> they are all over the Caspian sea
[21:23] <Geoff-G8DHE> Yes that's what struck me Laurenceb!
[21:23] <Laurenceb> useful if we want to do covert delivery i guess
[21:23] <Geoff-G8DHE> Can LeoBodnar cross the Caspian ?
[21:23] <LeoBodnar> there is a place somwhere where a lot of balloons are just hanging off a single tree
[21:24] <Laurenceb> i wonder if similar trajectories exist at most launch locations
[21:24] <Laurenceb> this could be an interesting "datamining" project
[21:24] <Laurenceb> are there trajectory "keyholes" for most locations
[21:24] <Geoff-G8DHE> I suspect the answer will be yes
[21:25] <Geoff-G8DHE> Might get different results according to height of course - we need an hourly predictor
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[21:31] <Geoff-G8DHE> Intersting for SP3OSJ http://ready.arl.noaa.gov/hypub/arlTraj.swf?client=gme-noaa&channel=OAR.ARL.HQ.HYSPLIT&dir=/hypubout/HYSPLITtraj_144349&data=/hysplit_metadata&ext=html
[21:32] <mfa298> Andy-G4MYS: nice job on the decodes. Looks like Southampton has positions 1-3 in the stats for B-46.
[21:33] <LeoBodnar> lol all the air ends up in China
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[21:34] <Reb-SM3ULC> LeoBodnar: it's portable black hole they got..
[21:35] <fsphil> is there a hysplit prediction for b46?
[21:35] <Andy-G4MYS> mfa298- err yes I run Virgin & so does M6SFC , never quite worked out how one ends up top of the table!
[21:36] <Geoff-G8DHE> http://ready.arl.noaa.gov//hypub/arlTraj.swf?client=gme-noaa&channel=OAR.ARL.HQ.HYSPLIT&dir=/hypubout/HYSPLITtraj_144285&data=/hysplit_metadata&ext=html
[21:37] <mfa298> Andy-G4MYS: I was looking at the stats on http://habitat.habhub.org/stats/ which has Astra with 99 decodes, myself with 87 and you with 73.
[21:39] <Reb-SM3ULC> Azerbaijan one again.. ;)
[21:39] <LeoBodnar> well done guys
[21:39] <Andy-G4MYS> mfa298 yes that PIE chart is interesting... many thanks for pointing it out!
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[21:40] <fsphil> Geoff-G8DHE: neat, thanks
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[21:51] <Andy-G4MYS> for the benifit of M6SFC http://ready.arl.noaa.gov//hypub/arlTraj.swf?client=gme-noaa&channel=OAR.ARL.HQ.HYSPLIT&dir=/hypubout/HYSPLITtraj_144285&data=/hysplit_metadata&ext=html
[21:51] <OZ1SKY_Brian> sp2ipt first green decode :)
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[21:55] <SA6BSS> OZ1SKY_Brian: dial freq?
[21:56] <OZ1SKY_Brian> 144.697 @1590Hz
[21:56] <SA6BSS> tnx
[22:03] <M6SFC> For Andy G4MYS Many thanks for the link. Been great fun on my first tracking
[22:06] <Geoff-G8DHE> Humm Actual versus predict is quite a bit out tonight http://360.g8dhe.net/HAB_Flights/2014_Flights/B-46_20140418/actual-predict_201404182000.jpg
[22:06] <mfa298> M6SFC: well done it's good to see another Southampton tracker (I'm M1ARI in Bassett)
[22:10] <M6SFC> Good to be part of the track John M6SFC Bitterne Pk
[22:11] <OZ1SKY_Brian> oof to bed, ill let the tracker run, gn
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[23:03] <G6UIM> Will track B-46 as long as I can, most of my kit is packed up. Have a 10 ele beam on 70cm and an 8dbd colinear on 2m
[23:03] <LeoBodnar> Thanks G6UIM
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[23:07] <G6UIM> in the process of moving house so rotators and beams are packed up. will move the 70cm beam to the south but as it's pointing East sadly a bit limited at the moment
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[23:17] <mfa298> looks like B-46 doesn't like the look of France
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[23:19] <arko> tis a silly place
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[23:20] <mfa298> I thought that was camelot
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[23:25] <mfa298> https://www.youtube.com/watch?v=32Kr9Wkka_Q
[23:37] <arko> i heard the real camelot castle is somewhere in scotland
[23:37] <arko> i shall visit someday but not go inside
[23:37] G6UIM (5b54d74b@gateway/web/freenode/ip.91.84.215.75) left irc: Quit: Page closed
[23:38] <mfa298> there's a few places that claim to be the real camelot
[23:38] <arko> will the real camelot please stand up?
[00:00] --- Sat Apr 19 2014