Bensemus t1_iu16527 wrote on October 27, 2022 at 7:59 PM

Reply to comment by kevintieman in US Space Systems debriefs Jeff Bezos and Blue Origin executives on military space weapon applications and opportunities by upyoars

Raptor is an engine design that has never been used before. BE-4 is a well known design but using new fuel. SpaceX is also has built over 100 V1 engines and has already built multiple V2 engines. Blue likely has yet to build 10 BE-4s

kevintieman t1_iu1acsf wrote on October 27, 2022 at 8:26 PM

Developing an engine from scratch is hard, both BE4 and raptor were. And none of those 100 v1 engines will be used to get to orbit. Look, I’m a big fan of SpaceX. But I also think BO deserves credit for developing such a complex and powerful engine. I’ll be rooting for BO and ULA for a successful first flight of Vulcan.