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SpaceX Launches Starship Flight Test
- BenoitP 3y agoPosting NASASpaceflight's channel as previous thread with the official feed fell off the front-page (maybe too much comments vs upvotes early on?) Older thread: https://news.ycombinator.com/item?id=35637882 https://news.ycombinator.com/item?id=35637882
- BenoitP 3y agoApparently it came back on the frontpage
- BenoitP 3y agoT-80: SpaceX "Fueling of Starship’s upper stage is now underway" T-86: SpaceX "Fueling of the Super Heavy booster is underway" T-117: SpaceX "The Starship team is go for prop load; team is keeping an eye on the weather" T-8h: EM "All systems currently green for launch" ---- Note: Can't edit or delete my previous comment anymore, please disregard it. New info will be on this one Note #2: Seems like this post has been taken off the HN frontpage. Maybe a comment ratio issue? ---- Launch in about 1 hours (13:28 UTC), which would be: - 6:28 Pacific - 7:28 Mountain - 8:28 Central - 9:28 Eastern - 15:28 European - Other: https://time.is/1328_20_Apr_2023_in_UTC https://time.is/1328_20_Apr_2023_in_UTC Official video stream starts ~45mn beforehand ---- - Resources/info: https://old.reddit.com/r/spacex/comments/12n02uf/rspacex_integrated_flight_test_official_launch/ https://old.reddit.com/r/spacex/comments/12n02uf/rspacex_int... https://twitter.com/SpaceX https://twitter.com/SpaceX https://twitter.com/elonmusk https://twitter.com/elonmusk https://www.spacex.com/launches/mission/?missionId=starship-flight-test https://www.spacex.com/launches/mission/?missionId=starship-... - Resources/watch: Mission control audio: https://www.youtube.com/watch?v=tBKCePn1E5A https://www.youtube.com/watch?v=tBKCePn1E5A Multistream: https://multistream.co/p/RB8Ao4GidTy/Starship%5C_Flight%5C_Test%5C_420 https://multistream.co/p/RB8Ao4GidTy/Starship%5C_Flight%5C_T... LabPadre Multi Plex: https://www.youtube.com/watch?v=w2BQKCnPkIc https://www.youtube.com/watch?v=w2BQKCnPkIc NASASpaceflight: https://www.youtube.com/watch?v=uouujjgkR3A https://www.youtube.com/watch?v=uouujjgkR3A
- profile53 3y agoWell, RIP that Starship. Does anyone understand/have theories on what failed? All I can find is that it had an RUD between liftoff and first stage separation.
- stetrain 3y agoLooks like either it started tumbling before it was intended, or the second stage failed to separate as the booster intentionally flipped for its boostback burn. With fins up top, the combined Starship and Booster stack is sort of like a dart flying fins-first. In theory controllable with thrust vectoring, but with some inherent instability.
- verdverm 3y agoTank pressure issues is my guess, it was one of the reasons for the hold @t-40 You can see the rocket sliding horizontally early in the flight, then 5 engines out before another few just before the uncontrolled spin, which was likely the result of having too many engines out, being unbalanced, and the controls trying to maintain course. It looked off to me from the get go, it had more tilt than it should have off the pad and then looked to correct itself slightly, but then only got worse, as you know by now.
- profile53 3y agoThanks, that makes sense. Didn’t realize how many engines failed but when you look at T+1:22, it looks like 7 engines are already out.