Timeline for What is this jet of material spraying out from Stage 2 during the SpaceX PAZ mission?
Current License: CC BY-SA 4.0
20 events
| when toggle format | what | by | license | comment | |
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| Jul 1, 2019 at 5:28 | history | edited | marked-down | CC BY-SA 4.0 |
It's "SpaceX", not "SPACE-X"
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| May 23, 2018 at 18:10 | vote | accept | Rory Alsop♦ | ||
| May 23, 2018 at 14:21 | comment | added | Saiboogu | @Hobbes gas generator exhaust is routed into the bell to provide film cooling. I agree with the comments and answer this is a LOX vent, probably part of keeping the pipes chilled down (prevent gas bubbles during engine startup due to warm pipes). | |
| May 23, 2018 at 14:14 | answer | added | Bob Jacobsen | timeline score: 6 | |
| S Mar 29, 2018 at 14:34 | history | bounty ended | CommunityBot | ||
| S Mar 29, 2018 at 14:34 | history | notice removed | CommunityBot | ||
| Mar 22, 2018 at 12:03 | comment | added | Rory Alsop♦ | @puffin - no. That is not the question I am asking. | |
| Mar 22, 2018 at 9:54 | comment | added | Puffin | May I suggest you modify the question in the light of the comments so far? It seems no one has the justified belief that it represents normal operation nor feels confident enough to describe how it could plausibly be a minor fault. How about "If this is a fault, what is the failure mechanism?" | |
| Mar 21, 2018 at 12:46 | comment | added | Hobbes | I don't think that's the gas generator exhaust: the GG points down, not radially, and the exhaust sits higher. | |
| S Mar 21, 2018 at 12:36 | history | bounty started | PearsonArtPhoto♦ | ||
| S Mar 21, 2018 at 12:36 | history | notice added | PearsonArtPhoto♦ | Authoritative reference needed | |
| Feb 24, 2018 at 15:40 | comment | added | Rory Alsop♦ | It was there all the way through 2nd stage burn, not just after shutdown. | |
| Feb 24, 2018 at 15:40 | comment | added | Jake Blocker | I was thinking it was venting excess fuel left in some of the pipes and turbo pumps after shutdown | |
| Feb 23, 2018 at 16:33 | comment | added | jkavalik | @geoffc They shouldn't be venting much before all satellites get deployed imho. And they might need some fuel for the deorbit burn. So probably not venting all residual fuel. But def looks like some purge at least. | |
| Feb 23, 2018 at 16:05 | history | edited | geoffc |
edited tags
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| Feb 23, 2018 at 13:54 | comment | added | Rory Alsop♦ | I don't think it can be a thruster, as it was there all through the entire 2nd stage burn. | |
| Feb 23, 2018 at 13:54 | comment | added | James Thorpe | I've asked a couple of related questions about this thruster/exhaust/whatever it is before - I'm unaware of an answer on this site yet that categorically states precisely what it is with sources. | |
| Feb 23, 2018 at 13:29 | comment | added | geoffc | I think it is the gas generator exhaust and is being used to vent residual fuel. But I cannot find confirmation of that yet. (Also noticed it). This was a very light payload so probably lots of fuel left in second stage to vent before reentering. | |
| Feb 23, 2018 at 13:02 | history | tweeted | twitter.com/StackSpaceExp/status/967021918858698753 | ||
| Feb 23, 2018 at 10:00 | history | asked | Rory Alsop♦ | CC BY-SA 3.0 |