highaltitude.log.20060701

[00:24] jcoxon (n=jcoxon@jac208.caths.cam.ac.uk) left irc: "Leaving"
[00:58] <macfreak4> hehe
[00:58] <macfreak4> just converted a 486 CPU heatsink to be used for my voltage regulators
[00:58] <macfreak4> now they're nice and warm, instead of soldering-iron temperature ;P
[00:58] <defy> youch
[00:59] <defy> how many volts are you putting into them to begin with?
[01:14] <macfreak4> ~ 28
[01:14] <macfreak4> depends on the load on the batteries
[01:15] <macfreak4> from around 25-28v to 7v
[01:15] <macfreak4> on an LM317T
[01:15] <macfreak4> so yeah
[01:16] <defy> wow
[01:16] <macfreak4> lotsa heat
[01:17] <defy> thats a big drop, wont you be losing a lot of power to heat?
[01:18] <macfreak4> not too bad
[01:18] <macfreak4> i can live with it
[01:18] <defy> hehe
[01:18] <macfreak4> the radio only takes 500ma at 7vdc
[01:18] <macfreak4> and it takes around 270ma off the batts (at ~28v)
[01:21] <macfreak4> yeah so i lose about 4 watts in the conversion
[01:21] <macfreak4> and i get to use 3.5 watts
[01:21] <macfreak4> haha less than 50% efficiency
[01:21] <macfreak4> oh well
[01:21] <defy> hehe
[01:21] <defy> how long do they last though? i guess thats all that really matters
[01:22] <defy> that and not starting a fire ;)
[01:22] <macfreak4> yeah i calculated even with all the load on the batts, i still get around 5 hrs runtime
[01:22] <macfreak4> that's with the laptop, V regs, etc...
[01:22] <macfreak4> oh bbl8r
[01:22] <macfreak4> dinner ;)
[01:22] <defy> are you going to run a full length test before hand?
[01:22] <defy> okie
[01:23] <macfreak4> oh yeah definitely
[01:23] <defy> hehe
[02:03] <macfreak4> back
[04:16] <Tiger^> hm
[04:39] <macfreak4> what
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[13:40] <defy> yo
[13:40] <jcoxon> hey defy
[13:41] <jcoxon> i reckon the will launch today
[13:42] <jcoxon> weather doesn't look that bad
[13:42] <defy> shuttle?
[13:42] <jcoxon> hehe
[13:42] <jcoxon> yeaj
[13:42] <jcoxon> yeah*
[13:42] <defy> i totally forgot, lol...its 1am here
[13:42] <jcoxon> i just realised i didn't say actually what i was talking about
[13:43] <defy> lol
[13:44] Action: defy starts streaming nasatv
[13:46] <jcoxon> defy, the actually launch is at 1949gmt
[13:48] <defy> sweet
[13:49] <defy> 3 hours away
[14:03] <jcoxon> hmmm its 1302 gmt right now
[14:03] <jcoxon> so its 6 and bit hours away
[14:03] <jcoxon> :-D
[14:04] <defy> well the countdown on nasatv it a little under 3 hours now
[14:04] <defy> or is that a different countdown
[14:04] <jcoxon> oh
[14:04] <jcoxon> they have large pauses
[14:04] <jcoxon> in theory they could launch in 3 hours
[14:04] <jcoxon> but they pause at particular intervals
[14:04] <defy> ah, weird
[14:05] <jcoxon> its just to double check stuff
[14:05] <defy> i see
[14:05] <jcoxon> and not to make it rushed
[14:05] <defy> yea fair enough
[14:05] <defy> so much at steak eh
[14:05] <jcoxon> :-)
[14:05] <jcoxon> right i'll be back later
[14:05] <jcoxon> cya
[14:05] <defy> :) later
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[16:03] <macfreak4> i'm looking at another launch window between july 13 and 20
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[18:48] <jcoxon> hey rocketboy
[18:48] <jcoxon> just got your email
[18:48] <jcoxon> they all look fine
[18:49] <jcoxon> i'm free till about 5 tomorrow
[18:50] <macfreak4> hey
[18:51] <jcoxon> hey macfreak4
[18:51] <jcoxon> read about hte new launch window
[18:52] <macfreak4> i'm watching it
[18:52] <macfreak4> oh
[18:52] <macfreak4> sry
[18:52] <macfreak4> i thought u meant the shuttle
[18:52] <macfreak4> ;)
[18:52] <rocketboy> hi
[18:52] <jcoxon> that as well
[18:52] <jcoxon> hey rocketboy
[18:54] malgar (n=malgar@adsl-ull-182-241.47-151.net24.it) left irc: "*** E' solo l'urto con un iceberg, che vuoi che sia, questa è una nave inaffondabile. *** 75$/barile"
[18:54] <rocketboy> hey - you got my email - so its all finished - what do you think?
[18:54] <jcoxon> it looks really good
[18:55] <jcoxon> thanks for all the work!
[18:55] <jcoxon> with 6 days i reckon we'll find it
[18:55] <rocketboy> no probs - is the extra weight ok?
[18:55] <jcoxon> i've been thinking about the parameters for the cutdown
[18:55] <macfreak4> probly not on
[18:55] <jcoxon> yeah the extra weight will fine
[18:55] <jcoxon> i'm probably be going for a 500g balloon
[18:55] <jcoxon> and i'm now just over 1kg
[18:56] <rocketboy> ok
[18:56] <jcoxon> i've set up dialup internet through my phone for getting mapping info on the move :-D
[18:57] <macfreak4> hehe
[18:58] <jcoxon> rocketboy, i'm pleased with Peg III, if we are careful about launch conditions it'll be really good
[18:59] <rocketboy> I'm looking forward to it - any idea which day - or is it a day by day check?
[18:59] <macfreak4> hav you posted anything on the site yet?
[18:59] <jcoxon> rocketboy, it really depends on the nova guys
[19:00] <jcoxon> i've got another 2 weeks in cambridge
[19:00] <jcoxon> macfreak4, nothing yet, i'll probably add some more tonight or tomorrow
[19:00] <jcoxon> today and tomorrow are certainly out of the question
[19:01] <jcoxon> tuesday/wednesday are quite good jetstream wise
[19:01] <icez> :D
[19:01] <icez> do you have pictures of peg3 online?
[19:01] <jcoxon> yup
[19:01] <jcoxon> http://www.srcf.ucam.org/~jac208/pegasus/pictures/pegasus3/construction/
[19:02] <rocketboy> so do you use the "winds aloft" data to determine jetstream speed?
[19:02] <jcoxon> i actually use www.wunderground.com
[19:02] <jcoxon> and their 300mb forecassts
[19:02] <jcoxon> forecasts*
[19:02] <macfreak4> yeah but i already seen those
[19:04] <icez> :D
[19:05] <rocketboy> I hadn't seen that before - that pretty good
[19:08] <jcoxon> i also look here: http://www.stronge.org.uk/index.html#charts
[19:08] <jcoxon> though i do find that jetstream forcasts are exceedingly variable
[19:08] <jcoxon> we only need to give a days notice before launch as the NOTAM has already been issued
[19:18] <jcoxon> hehe, if i launched right now i would have an interesting flight path, it would swing around the wash and go up the east coast of the uk
[19:19] <jcoxon> winds are easterlies
[19:19] <jcoxon> while the jetstream is a southwesterly
[19:20] <rocketboy> I'm trying to find the link i had on winds aloft - you could download met office radio sond data
[19:20] <rocketboy> then you put it into wbaltrack - and it will calculate a likly landing spot
[19:25] <rocketboy> nah cant find it for the mo
[19:25] <rocketboy> I'm just going to cut the grass - be back in 20mins
[19:26] <jcoxon> no probs
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[19:43] <Tiger^> T-20 and holding
[19:43] <rocketboy> now counting
[19:43] <Tiger^> yeah
[19:44] <Tiger^> it's weird though
[19:44] <Tiger^> the launch is scheduled at 19:49 UTC
[19:44] <Tiger^> and it's 18:44 UTC now
[19:45] <Tiger^> i don't remember how many holds are left in the countdown now
[19:52] <jcoxon> hey Tiger^
[19:52] <jcoxon> rocketboy, hehe i can't use wbaltrak - i have a ppc!
[19:52] <jcoxon> need to find myself a windows 'puter asap :-D
[19:53] <Tiger^> hi jcoxon
[19:53] <Tiger^> wbaltrak is too complicated
[19:54] <Tiger^> and i'd like to KISS, when it comes to a simple task of tracking one balloon.
[19:55] <rocketboy> humm - I though wbaltrack was a prediction program
[19:57] <macfreak4> jcoxon: couldn't you find a win pc at the university?
[19:58] <Tiger^> rocketboy: yeah it is, too.
[19:58] <rocketboy> wot no windows (:#
[19:59] <jcoxon> macfreak4, good point
[19:59] <jcoxon> there are loads upstairs
[20:01] <rocketboy> they still holding?
[20:01] <rocketboy> whats the maximum hold?
[20:01] <rocketboy> before they loose the window
[20:01] Action: Tiger^ was using Linux for desktop before even Windows 95, but switched to Windows XP three years ago :)
[20:02] <Tiger^> rocketboy: it's a planned hold, 45 minutes
[20:02] Action: macfreak4 switched from Mac to PC last year
[20:03] <rocketboy> thanks tiger - I just love rocket launches
[20:03] <Tiger^> the window for today starts 19:49 and ends 19:5something UTC
[20:03] <Tiger^> yeah, me too
[20:03] <Tiger^> i'm a big fan of the original Mercury, Gemini and Apollo, though ;)
[20:04] <jcoxon> there is something about shuttles though
[20:04] <jcoxon> so graceful
[20:04] <Tiger^> and of course Vostok, Voskhod and Soyuz on the other side
[20:04] <jcoxon> indeed
[20:04] <Tiger^> jcoxon: yeah
[20:04] <rocketboy> humm but there was nothing like an apollo launch for shear power
[20:04] <Tiger^> but there's nothing exciting about space exploration nowadays
[20:04] <jcoxon> true
[20:05] <jcoxon> but Near Space - thats a different matter
[20:05] <jcoxon> its the place to explore!
[20:05] <Tiger^> hmm, perhaps we should start our own space program?
[20:05] <Tiger^> ;)
[20:05] <rocketboy> yes we should
[20:05] <Tiger^> alas, i don't know anything about robbing banks
[20:07] <rocketboy> need to get someone like Paul Allen to sponsor you
[20:07] <rocketboy> the spaceship one sponsor
[20:07] <Tiger^> yeah
[20:07] <jcoxon> there's branson
[20:07] <jcoxon> :-)
[20:08] <rocketboy> what about richard branson
[20:08] <jcoxon> though to tell the truth he already has a spaceship
[20:08] <rocketboy> GMTA
[20:08] <jcoxon> GMTA?
[20:09] <rocketboy> Great Minds Think Alike
[20:09] <jcoxon> oh hehe
[20:09] <jcoxon> of course
[20:09] <Tiger^> ;)
[20:09] <jcoxon> the branson does like balloons
[20:09] <Tiger^> i wonder if we'll see the next space race
[20:09] <Tiger^> i mean, US - China
[20:10] <rocketboy> actually - we (the british) were the world leaders in some forms of space technology (like Hydrogen Peroxide engines) back in the 1960s
[20:10] <jcoxon> :-)
[20:10] <jcoxon> in all seriousness the UK has the knowledge and people
[20:10] <jcoxon> just not the drive/money
[20:11] <Tiger^> right
[20:11] <Tiger^> you know Poland once had a space program?
[20:11] <jcoxon> though Tiger^ leads the Polish space program in my eyes
[20:11] <jcoxon> :-D
[20:11] <rocketboy> agreed - mostly money I think
[20:11] <jcoxon> i didn't know that
[20:11] <Tiger^> in the 1960s they sent about a dozen rockets into space
[20:11] <jcoxon> ooo cool
[20:12] <Tiger^> and were working on orbit lauches
[20:12] <Tiger^> launches*
[20:12] <rocketboy> we even put a satellite in space
[20:12] <Tiger^> but a prikaz came from USSR
[20:12] <Tiger^> to stop all research and dismantle all prototypes.
[20:12] <Tiger^> and that was it.
[20:13] <Tiger^> f*king soviet occupation.
[20:13] <jcoxon> indeed
[20:14] <Tiger^> we'd have a full blown space program by now.
[20:14] <Tiger^> and a LOT of money for launching commercial sats
[20:17] <Tiger^> 25 minutes remaining in the hold
[20:21] <rocketboy> do you know if they are going to have a ground facing video link from the shuttle - thats a real blast
[20:21] <jcoxon> not sure about a link
[20:21] <jcoxon> but they pretty much have cameras everywhere these days
[20:22] <jcoxon> on nasa tv they'll show the launch from a distance i reckon
[20:22] <rocketboy> to cat the bitrate down?
[20:23] <rocketboy> cut
[20:23] <jcoxon> not sure
[20:23] <jcoxon> last launch i lost my streaming connection
[20:23] <jcoxon> though i reckon that was cause i was on home broadband
[20:23] <jcoxon> good old JANET
[20:23] <jcoxon> nice and fast here now
[20:26] <jcoxon> hmmm seems like they aren't going to launch
[20:27] <rocketboy> shame I wanted to see what those birds make of it
[20:28] <rocketboy> I say light her up boys
[20:28] <jcoxon> 5 years ago they would of launched
[20:31] <rocketboy> I'm amazed they can hold this long and still get in the right plane for ISS
[20:32] <jcoxon> its a scheduled hold
[20:32] <jcoxon> their window is actually only 4 minutes wide
[20:32] <jcoxon> at 1949GMT
[20:34] <rocketboy> ah so the launch if it happend will be at 19:49 to 19:53
[20:34] <rocketboy> ?
[20:34] <jcoxon> yup
[20:36] <icez> that means they have 4 minutes to get to space?
[20:37] <jcoxon> no
[20:37] <rocketboy> the launch will be in that window
[20:38] <Tiger^> hmm
[20:38] <icez> oh:/
[20:38] <Tiger^> the weather guys are no go
[20:38] <rocketboy> - mind you the satellite lauchers make space in about 5 mins
[20:38] <rocketboy> launches
[20:39] <rocketboy> its a bit slower with a human payload
[20:39] <icez> oh right there's people in this one:P
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[20:42] <Tiger^> they won't launch.
[20:42] <Tiger^> weather is still no go.
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[21:40] <icez> howdy phatmonkey
[21:42] <phatmonkey> hey
[21:53] <phatmonkey> aww man, the shuttle launch has been cancelled
[21:56] <Tiger^> yeah
[22:15] <rocketboy> hey jcoxon - I managed to get CWget working - and decoding the PIII radio beacon - it mangaged read "egasus iii" from the signal
[22:17] <phatmonkey> eird
[22:17] <icez> eah
[22:17] <icez> :]
[22:17] <rocketboy> K?
[22:17] <phatmonkey> wowsa, didn't realise archive.org kept pdfs
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[00:00] --- Sun Jul 2 2006