From: utzoo!decvax!cca!OTA@S1-A@sri-unix
Newsgroups: net.space
Title: Specific Impulse of SSMEs
Article-I.D.: sri-unix.1447
Posted: Wed May 12 01:47:29 1982
Received: Thu May 13 00:49:34 1982

From: Ted Anderson 
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