YHK - yet another hacker news clone

Launch stream from ULA https://www.youtube.com/watch?v=qM5A1ZO9oh8

Seems to cut off near the end for some PR video and doesn't mention anything.

Eric Berger reports that the fault is likely in the booster stage, not the Centaur upper-stage and not the solid-rocket motors. The means it's either the Vulcan rocket or (more worryingly) the Blue Origin BE-4 engines. If it's the latter, this might also delay the next flight of New Glenn and possibly risk the timelines of the Artemis program.[1]

Irene Klotz reports that this set of BE-4 engines were modified after the New Glenn pad explosion. Specifically, they modified the oxygen valves, which were blamed for the hotfire anomaly (pro-tip: it's always the fucking valves).[2]

The booster shut down about 40 seconds later than the expected timeline, which implies that it had an extra 40 seconds of fuel relative to expectations. It is possible that the modifications somehow caused an under-performance of the booster, which would doom the mission.

[1] https://x.com/SciGuySpace/status/2122070802971385977

[2] https://x.com/Free_Space/status/2122067780543672603

Might honestly be the end of ULA. This is quite a disaster given how shaky everything already was.

And it's another 8 lengths back to Pvt. Smiles (ULA) who is trailing the field ... SpaceX is widening now! He is moving like a tremendous machine! ... Blue is dropping back ... But SpaceX is all alone!

2020s space race, visualized https://www.youtube.com/watch?v=vfCMtaNiMDM