this post was submitted on 18 Nov 2023
54 points (87.5% liked)

SpaceX

1887 readers
7 users here now

A community for discussing SpaceX.

Related space communities:

Memes:

founded 1 year ago
MODERATORS
threelonmusketeers@sh.itjust.works
few@sh.itjust.works
54
/c/SpaceX Starship Integrated Flight Test 2 Official Launch Discussion & Updates Thread! (nitter.net)
submitted 10 months ago* (last edited 10 months ago) by threelonmusketeers@sh.itjust.works to c/spacex@sh.itjust.works
49 comments fedilink hide all child comments
 

Welcome to the /c/SpaceX Integrated Flight Test 2 Official Launch Discussion & Updates Thread!

| Scheduled for (UTC) | 2023-11-18 13:00 | |

|

| | Scheduled for (local) | 2023-11-18 07:00 (CST) | | Launch Window (UTC) | 2023-11-18 13:00 to 2023-11-18 13:20 (20 minutes) | | Weather | Good | | Launch site | OLM-A, SpaceX Starbase, TX, USA. | | Booster | B9 | | Ship | S25 | | Booster landing | B9 to perform a soft water landing in the Gulf of Mexico | | Ship landing | S25 expected to impact Pacific Ocean near Hawaii |

Webcasts

| Stream | Link | |

|

| | Everyday Astronaut (4k and low latency) | https://www.youtube.com/watch?v=6na40SqzYnU | Spaceflight Now | https://www.youtube.com/watch?v=m-LFzFWaACo | LabPadre | https://www.youtube.com/watch?v=dwhcSwQWOHk | NASASpaceflight | https://www.youtube.com/watch?v=uOI35G7cP7o | The Launch Pad | https://www.youtube.com/watch?v=R0K0uSDE6ks | Space Affairs | https://www.youtube.com/watch?v=2XbmBspvaHE | SpaceX | https://twitter.com/SpaceX/status/1725852544587727145#m | The Space Devs | https://www.youtube.com/watch?v=CREQ3e2Li34

Stats

☑️ 2nd Starship Full Stack launch

☑️ 299th SpaceX launch all time

☑️ 86th SpaceX launch this year

☑️ 2nd launch from OLM-A this year

☑️ 211 days, 23:27:00 turnaround for this pad

Stats include F1, F9 , FH and Starship

Mission Details 🚀

Link to Starship Dev thread

you are viewing a single comment's thread
view the rest of the comments
[–] threelonmusketeers@sh.itjust.works 11 points 10 months ago* (last edited 10 months ago) (1 children)

Scott Manley has already chimed in with his thoughts: Why Starship’s Booster Failed After Staging

It seems that several engines weren't just shutting down during the boostback burn, but were violently disassembling themselves. Possible cause could include propellant sloshing during the flip leading to inconsistent pressure fed to the engines/plumbing.

[–] JohnDClay@sh.itjust.works 4 points 10 months ago (1 children)

Gotta love how quick he is on these.

[–] threelonmusketeers@sh.itjust.works 7 points 10 months ago

And he's now done a more in-depth analysis: Starship & Superheavy Become The Biggest Rocket In Space.... Before Exploding

He speculates that B9 engine failure during boostback was due to either fuel slosh, fluid hammer, or a combination of both. It's unclear whether the booster FTS was triggered or whether the Booster RUD happened on its own.

For S25, he notes that a puff of gas just after T+7 minutes coincides with a drop in the LOx gauge. This indicates an oxygen leak of some sort, which could have any number of causes.