OTA@S1-A@sri-unix (05/12/82)
From: Ted Anderson <OTA at S1-A> The specific impulse of the Space Shuttle Main Engines is very close to 450 seconds. There is some variation between engines and so forth, but I think the variation amounts to less than 5 seconds. I don't know the number for the SRBs, but I'd estimate between 250 and 300 seconds. Ted Anderson
POURNE@MIT-MC@sri-unix (05/13/82)
From: Jerry E. Pournelle <POURNE at MIT-MC> Jerry Kidd, who got a medal for his work on SSME, told me as we watched the first Shuttle landing out at Edwards that the engine was developing ~100 horsepower/lb. Which is a impressive number...