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I don't know if Aerojet would have been any faster… at the time the decision was made, rumors said that AR-1 development was significantly behind BE-4. As for
by CarVac 5y ago
I don't know if Aerojet would have been any faster… at the time the decision was made, rumors said that AR-1 development was significantly behind BE-4.
As for SpaceX engines, I think SpaceX is not at all interested in being a supplier for an exceedingly picky customer like ULA.
- foxyv 5y agoAlso, I'm not sure Elon Musk would have stood still to give up one of the precious few Raptor engines he has from Starship.