actfatcat t1_j83r4fn wrote
Reply to comment by Shrike99 in SpaceX on Twitter: Super Heavy Booster 7 completed a full duration static fire test of 31 Raptor engines, producing 7.9 million lbf of thrust (~3,600 metric tons) – less than half of the booster’s capability by allforspace
2.5 minutes? My watch must be slow.
LurkerWithAnAccount t1_j83vw29 wrote
You have to convert from Thrust Minutes to Earth Seconds.
rdhatt t1_j84x9rs wrote
~2.5 minutes is the total burn time of the Saturn V first stage engines after liftoff.
Shrike99 t1_j860j84 wrote
S-IC nominal burn time is 150 seconds, or exactly 2.5 minutes.
Superheavy nominal burn time is 169 seconds, or 2.8 minutes.
Though that figure may have been for the 29 engine version, the 33 engine version might be a bit less since it burns fuel quicker.
Either way, it's close enough to the Saturn V that I think it's fair to call it a 'similar' duration.
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