Can’t vouch for this, but I’ll apply Progthink and believe it because I want it to be true.
(What? Yeah, as the numbers climbed, I kind’a knew where this was goin’)
Big Day for Mankind’s Ambitions
Records for most engines and for most thrust (2 of the 33 shut down)
UPDATE: engines ran at half-throttle
[uncovers eyes] Hey! It didn’t blow up or fall over! It didn’t blow up or fall over!
[dances around in glee, trips over cane, wipes up sloshed coffee and cigar ashes]
Locker room pats on the ass for Elon Musk, Gwynne Shotwell, and their SpaceX team
Note: the flames after shutdown are normal.
I’m guessin’ fuel (methane) vents through the engines after the Ox valves close
to avoid a super-hot lean-mixture situation in the combustion chamber & throat.
(Operative word: guessin’, i.e. too lazy to look it up)
UPDATE: Just occurred to me that the fuel used to cool the engine bells has to vent after shutdown.
Watch incredible HD video of the moment when the Chinese surveillance balloon was shot down by a single missile from an F-22 fighter jet from Langley Air Force Base pic.twitter.com/KjwTrgcvcb