Newsgroups: sci.space.shuttle
Path: utzoo!henry
From: henry@zoo.toronto.edu (Henry Spencer)
Subject: Re: SSME Cost...
Message-ID: <1990Nov22.043727.1723@zoo.toronto.edu>
Organization: U of Toronto Zoology
References: <5759@crash.cts.com> <1990Nov21.120559.10809@pbs.org>
Date: Thu, 22 Nov 90 04:37:27 GMT

In article <1990Nov21.120559.10809@pbs.org> pstinson@pbs.org writes:
>>>... Delta uses Atlas-derived engines...
>Actually the engines used by Delta are Thor-derived, not Atlas.

Go back farther and you will find that the Thor first stage engine is
basically an Atlas booster engine (Atlas has two booster and one sustainer).
Even after considerable divergent evolution, the two are still similar
enough that the 1986 Delta failure put Atlas launches on hold until the
problem was understood.
-- 
"I don't *want* to be normal!"         | Henry Spencer at U of Toronto Zoology
"Not to worry."                        |  henry@zoo.toronto.edu   utzoo!henry