[00:35] malgar (n=malgar@adsl-ull-230-245.47-151.net24.it) left irc: "*** E' solo l'urto con un iceberg, che vuoi che sia, questa è una nave inaffondabile. *** 75$/barile" [01:54] jcoxon (n=jcoxon@jac208.caths.cam.ac.uk) left irc: "Leaving" [03:36] macfreak4 (n=macfreak@24-107-201-22.dhcp.stls.mo.charter.com) left irc: Remote closed the connection [03:36] macfreak4 (n=macfreak@24-107-201-22.dhcp.stls.mo.charter.com) joined #highaltitude. [07:04] macfreak4 (n=macfreak@24-107-201-22.dhcp.stls.mo.charter.com) left irc: Remote closed the connection [07:04] macfreak4 (n=macfreak@24-107-201-22.dhcp.stls.mo.charter.com) joined #highaltitude. [07:23] macfreak4 (n=macfreak@24-107-201-22.dhcp.stls.mo.charter.com) left irc: Remote closed the connection [07:23] macfreak4 (n=macfreak@24-107-201-22.dhcp.stls.mo.charter.com) joined #highaltitude. [08:22] macfreak4 (n=macfreak@24-107-201-22.dhcp.stls.mo.charter.com) left irc: Remote closed the connection [08:22] macfreak4 (n=macfreak@24-107-201-22.dhcp.stls.mo.charter.com) joined #highaltitude. [08:26] icez (n=icez@ip68-3-56-121.ph.ph.cox.net) left irc: Remote closed the connection [08:51] malgar (n=malgar@adsl-ull-40-230.47-151.net24.it) joined #highaltitude. [09:05] macfreak4 (n=macfreak@24-107-201-22.dhcp.stls.mo.charter.com) left irc: [09:26] jcoxon (n=jcoxon@jac208.caths.cam.ac.uk) joined #highaltitude. [11:47] borism (n=boris@tor/session/external/x-903598443483bdd1) joined #highaltitude. [13:22] rocketboy (n=steve@217.47.75.147) joined #highaltitude. [13:48] rocketboy (n=steve@217.47.75.147) left irc: [14:20] phatmonkey (n=ben@firshman.co.uk) joined #highaltitude. [14:52] zeusbot joined #highaltitude. [15:13] ee, exciting [15:14] what? :-0 [15:14] :) [15:19] your launch! [15:19] oh right yeah [15:19] its been brought a day forward [15:19] going for friday morn [15:20] nice [15:20] 8 o'clock... it's like, um, midnight! [15:20] ;> [15:21] ? :-) [15:21] you know, morning's like midnight to me :D [15:22] ooooo right [15:22] hehe [15:22] oh wows, we need kooky in here [15:22] (10:12:27) (SoaP) i have sock for my ipod (10:12:30) (+Kooky) cock in my sock [15:22] *sigh* [15:22] i can't believe i coded this thing [15:23] hehe [15:23] hm [15:23] wonder if i can use the command too [15:23] sweet! [15:23] jcoxon: everything ready? [15:23] ummmm :-) [15:24] suprisingly yes [15:24] great! :) [15:24] still building the cutdown circuit [15:24] but in my eyes that isn't that important [15:24] yeah [15:24] did a test run this morning [15:24] all communications work [15:24] going to test hte camera later to make sure its working [15:24] what sort of cutdown algorithm do you have? [15:24] ummmm i don't right now [15:24] just a radius? [15:25] it will be time and radius [15:25] and if time i'll do a coast polygon thing [15:25] i have an algorithm that finds the distance between two coordinates if you want, very useful [15:25] though i don't think i'll have time as its my sisters birthday tomorrow [15:25] phatmonkey, ooo that would be great [15:25] takes into account the earth's imperfect curvature too, crazy [15:26] oh and a i need to fit the aerobrake [15:26] for what? [15:27] well nova think we need aerobrakes [15:27] if its avaliable i'll wack it on [15:27] if not c'est la vie [15:30] thanks [15:31] you can probably import that into perl or similar if you don't want to write anything in c [15:31] was planning to use C [15:31] its what i do best [15:31] gps_to_distance returns the distance in *metres*, don't think that's mentioned anywhere [15:32] right [15:32] cool [16:10] icez (n=icez@ip68-3-56-121.ph.ph.cox.net) joined #highaltitude. [19:27] all looking good :-D [19:34] zeusbot joined #highaltitude. [19:36] zeusbot joined #highaltitude. [19:54] malgar (n=malgar@adsl-ull-40-230.47-151.net24.it) left irc: "*** E' solo l'urto con un iceberg, che vuoi che sia, questa è una nave inaffondabile. *** 75$/barile" [20:14] jcoxon (n=jcoxon@jac208.caths.cam.ac.uk) left irc: "Ex-Chat" [20:16] jcoxon (n=jcoxon@jac208.caths.cam.ac.uk) joined #highaltitude. [20:42] hey guys [20:43] anyone around who could lend me a minute [20:49] well if some pops by - i'm trying to work out what sort of range i should use for hte cutdown considering my position in hte UK [20:50] i'm in cambridge and one of the cutdown parameters will be distance from launch site [21:00] rocketboy (n=steve@217.47.75.40) joined #highaltitude. [21:00] hey rocketboy [21:00] hi - got your trxt [21:01] I'm ready :-) [21:01] cool, and my email? [21:01] no - ill look [21:04] i'm trying to decide on the range for the cutdown [21:05] i'm thinking 65km but if it goes below lat 51.800000 also cut down [21:05] and also only ever cutdown if above 15km - don't want it exploding after the balloon has burst and its lying next to the parachute [21:07] Not a bad idea - seems good to me [21:08] its not that explosive - but if it was on the ground in crops it might start a fire [21:08] very unlikly IMO - but better safe than sorry [21:08] yeah [21:09] i'm going to have 3 possible cutdown scenarios: [21:09] 1) above 15km and been flying for 2hrs [21:09] 2)above 15km and travelled more then 65,000m [21:09] 3)above 15km and below 51.80000lat [21:12] yeh sounds good to me - I'm not an expert - but this was exactly the sort of thinh I was going to code - a sort of 4 dimensional box [21:13] the nova team have an amazing cutdown system [21:13] it constantly calculates its future path [21:13] and has danger zones flagged up [21:13] so will cutdown if there is a problem [21:13] like if it'll land in an urban area [21:14] rocketboy, balloonwise i'm thinking a 500gm [21:14] a little over filled to get some height [21:14] so just over 1lb of lift [21:15] wow - given the assent and drift data from the GPS + the parachute drag coefficent it should be possible to calcualte a reasonably accurate landing zone [21:15] yeah its just a lot more powerful [21:16] so what is the total weight [21:16] if i had time i'd adapt it but it won't be ready till just before the launch [21:16] Peg III weighs just over 1kg [21:16] about 1.2kg [21:17] keep it simple is my motto - don't want a software bug doing a Ariane rocket [21:18] :-0 [21:18] ah so 1lb of lift left over after the 1.2Kg of the payload - thats about right for a 2 hours assent isn't it? [21:18] yup [21:18] well actually it should give us about 1000ft/min [21:18] sounds spot on from my reading [21:19] should be good, the winds forecast suggest it being blown SW then SE then SW again [21:20] I'm planning on chasing PIII - I'll head off in the jet stream direction reasonably soon after launch [21:20] try to get ahead of it [21:21] what are the prediced jet stream speeds [21:21] ? [21:21] <10mph [21:21] :-D [21:21] wow thats low [21:22] http://www.wunderground.com/modelmaps/maps.asp?model=GFS&domain=EU [21:22] it might edge up to 15mph but i doubt it (this is with the current forecasts [21:23] rocketboy, if you chase i'll stay behind and wait - i'll relay info when i get it [21:23] is that okay? [21:23] yes thats fine [21:24] will need some help at the launch though :-d [21:24] but i've really made it simple so i could see us twiddling thumbs waiting for hte balloons to fill [21:24] the plan is to launch at approx same time [21:24] try and get a pic of another balloon [21:24] on the ascent [21:24] but if there is risk of collision we'll space them out [21:24] Wow - excellent [21:25] have the nova guys got a tracker? [21:25] there's more than one balloon?! [21:25] phatmonkey, there are 3 [21:26] rocketboy, they have a gps/mobilephone system [21:26] wow, there's so much i don't know about this launch [21:26] and a traxia beacon on 434.650mhz [21:26] will that interfere? [21:27] phatmonkey, yeah it'll be peg III, nova and MiHAB (from oxford) [21:27] Shouldn't be a problem unless we are unlucky - I know the guys that sells traxa [21:28] he is one of our rocket mob [21:28] ah, wow [21:28] best to test the frequency of the traxa units [21:29] we can do that just before lauch - that way i can probaly track both balllons [21:29] cool [21:29] they have a yagi but really don't know much about radio [21:29] so any help you can give them will be appreciated [21:30] yeh sure - no probs - do you know what receiver they are using? [21:30] nope [21:31] i could find out - i'll email them [21:31] it would be interesting to know - but its not important. [21:32] oh right - well if i see them i'll get in touch [21:32] on launch day we aren't in to much of a hurry [21:32] we are allowed to launch when we are ready apparently [21:36] malgar (n=malgar@adsl-ull-230-146.47-151.net24.it) joined #highaltitude. [21:52] right i'm going to take a break from this for a bit [21:52] beginning to feel i'm running out of time :-D (but i've learnt the hard way not to get tired!) [21:52] so time to relax [21:53] phatmonkey (n=ben@firshman.co.uk) left #highaltitude ("Ex-Chat"). [21:53] phatmonkey (n=ben@firshman.co.uk) joined #highaltitude. [21:54] argh, why does xchat have such a huge friggin close button?! [22:29] rocketboy (n=steve@217.47.75.40) left irc: [22:46] jcoxon (n=jcoxon@jac208.caths.cam.ac.uk) left irc: "Leaving" [22:49] jcoxon (n=jcoxon@jac208.caths.cam.ac.uk) joined #highaltitude. [23:22] phatmonkey (n=ben@firshman.co.uk) left irc: "Ex-Chat" [00:00] --- Thu Jul 13 2006