Everyday Astronaut
@Erdayastronaut · Sep 9, 2019
Raptor couldn't do SSTO on that vehicle most likely. The RS-2200 was going to have 455s in a vacuum vs Sea Level Raptor's 370s. But with similar power as the RS-2200, there'd need to be 7 of them to get it off the ground.
Elon Musk
@elonmusk
Sea level Raptor’s vacuum Isp is ~350 sec, but ~380 sec with larger vacuum-optimized nozzle
05:51 PM · September 9, 2019 · 0 views
37
23
1K