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From: mat@hou5d.UUCP
Newsgroups: net.columbia
Subject: Re: What engines are what.
Message-ID: <921@hou5d.UUCP>
Date: Fri, 20-Apr-84 22:36:52 EST
Article-I.D.: hou5d.921
Posted: Fri Apr 20 22:36:52 1984
Date-Received: Sun, 22-Apr-84 08:28:21 EST
References: <7252@decwrl.UUCP>
Organization: AT&T Information Systems Laboratories, Holmdel, NJ
Lines: 19

I believe that the SRB's each generate about 2.7 million lbs (what's that in
Newtons?) of thrust.  The three ``main engines'' contribute about another 1.4
million lbs.  Total:  A little over 7 million lbs.  This is assuming the second
generation SRBs and the 104% thrust liquid engines.

Compare this with the Saturn V used on the last moon shot.  Total thrust from
five engines: about 7,780,000 lbs.  The center engine was either a little more
or less powerful than the others in order to avoid both excess stress to the
structure of the booster and a troublesome reverse-direction gas flow under
the booster.  The main booster and second stage put 300,000 lbs in earth orbit!

We've got to take the shuttle a bit further before it will be really ready
to pave the way into space.
-- 

					from Mole End
					Mark Terribile
		     (scrape..dig)	hou5d!mat
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