highaltitude.log.20191003

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[03:55] <SpacenearUS> New position from 03KA6TVU-11 after 032 days silence - 12https://tracker.habhub.org/#!qm=All&q=KA6TVU-11
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[04:26] <SpacenearUS> New position from 03ICT3 after 0317 hours silence - 12https://tracker.habhub.org/#!qm=All&q=ICT3
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[08:24] <SpacenearUS> New vehicle on the map: 03TA1ANI-11 - 12https://tracker.habhub.org/#!qm=All&q=TA1ANI-11
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[10:24] <SpacenearUS> New vehicle on the map: 03VK5NE_chase - 12https://tracker.habhub.org/#!qm=All&q=VK5NE_chase
[11:26] <SpacenearUS> New vehicle on the map: 03VR2OT-3 - 12https://tracker.habhub.org/#!qm=All&q=VR2OT-3
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[13:30] <SpacenearUS> New vehicle on the map: 03KD0ZTV-3 - 12https://tracker.habhub.org/#!qm=All&q=KD0ZTV-3
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[14:08] <SpacenearUS> New position from 03KK6UUQ-8 after 0313 hours silence - 12https://tracker.habhub.org/#!qm=All&q=KK6UUQ-8
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[15:56] <SpacenearUS> New position from 03DC2EH-12 after 032 days silence - 12https://tracker.habhub.org/#!qm=All&q=DC2EH-12
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[17:14] <SpacenearUS> New position from 03BLACKBIRD after 032 days silence - 12https://tracker.habhub.org/#!qm=All&q=BLACKBIRD
[17:42] <SpacenearUS> New vehicle on the map: 03OH3ACE-12 - 12https://tracker.habhub.org/#!qm=All&q=OH3ACE-12
[18:34] <SpacenearUS> New position from 03NASD01 after 032 days silence - 12https://tracker.habhub.org/#!qm=All&q=NASD01
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[18:49] <SpacenearUS> New position from 03STELLA24 after 0320 hours silence - 12https://tracker.habhub.org/#!qm=All&q=STELLA24
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[20:24] <chris_99> i'm just reading https://en.wikipedia.org/wiki/Project_Babylon it says 'It is possible that Big Babylon was intended both to launch satellites and to serve as a weapon' that sounds really interesting, re. sats. Does anyone know roughly how it may have worked out of interest, i was wondering if it was possibly a type of light gas gun? but i guess probably not as it seems to be just a single pipe, which was
[20:24] <chris_99> rifled iirc?
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[20:49] <superkuh> For orbital uses, like every other gun project, they'd find that if they could make a 2nd stage light and powerful enough to circularize the orbit and still be fired they'd be better off just using those rocket engines for everything and ditching the gun.
[20:50] <chris_99> ah yeah i just found a pdf, that included a diagram, of what they call a gun launched rocket, which seems to have fuel in, that they'd use in the supergun, but i assume the gun used an explosive below the rocket somehow?
[21:05] <chris_99> 'Nine tonnes of special supergun propellant would fire a 600 kg projectile over a range of 1,000 kilometres, or a 2,000 kg rocket-assisted projectile.'
[21:05] <chris_99> ' The recoil force of the gun would be 27,000 tonnes - equivalent to a nuclear bomb and sufficient to register as a major seismic event all around the world. ' - that sounds pretty crazy
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[21:15] <SpeedEvil> #nothowanyofthisworks
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[21:16] <SpeedEvil> (recoilforce = kilotons)
[21:16] <SpeedEvil> yield
[21:17] <chris_99> sorry, what's not correct?
[21:18] <russss> you can't compare tonnes of force to kilotons of yield if that is indeed what they were doing
[21:19] <chris_99> oh gotcha
[21:20] <russss> and given that kilotons is TNT equivalent and they used 9 tonnes of propellant there's no way that the amount of energy released would be anywhere near a nuclear explosion. Unless of course, the propellant was nuclear.
[21:21] <russss> I'm sure someone in the 1960s probably already had that idea
[21:21] <chris_99> yeah that confused me re. comparing it to a nuclear explosion
[21:22] <chris_99> https://en.wikipedia.org/wiki/Super_High_Altitude_Research_Project i just found that, after looking at HARP, which seemingly did use a light gas gun
[21:33] <SpeedEvil> Assuming 2km/s - for example - with solid rocket 242s ISP, 600kg - say 100kg structure - you end up with a payload of at LEO of -60kg.
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[21:34] <SpeedEvil> Payload would be at best in the ten kilo range, with a three stage solid rocket.
[21:35] <SpeedEvil> And of course it needs to survive ~10000g or so aceleration.
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[23:15] <SpacenearUS> New position from 03KA6TVU-11 after 0316 hours silence - 12https://tracker.habhub.org/#!qm=All&q=KA6TVU-11
[00:00] --- Fri Oct 4 2019