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- Newsgroups: sci.space
- Path: sparky!uunet!convex!convex!ewright
- From: ewright@convex.com (Edward V. Wright)
- Subject: Re: SSTO vs 2 stage
- Sender: usenet@news.eng.convex.com (news access account)
- Message-ID: <ewright.725820847@convex.convex.com>
- Date: Thu, 31 Dec 1992 16:54:07 GMT
- Distribution: sci
- References: <ewright.725734633@convex.convex.com> <1992Dec30.180058.28938@cs.rochester.edu> <ewright.725755862@convex.convex.com> <1992Dec31.015157.14864@cs.rochester.edu>
- Nntp-Posting-Host: bach.convex.com
- Organization: Engineering, CONVEX Computer Corp., Richardson, Tx., USA
- X-Disclaimer: This message was written by a user at CONVEX Computer
- Corp. The opinions expressed are those of the user and
- not necessarily those of CONVEX.
- Lines: 15
-
- In <1992Dec31.015157.14864@cs.rochester.edu> dietz@cs.rochester.edu (Paul Dietz) writes:
-
- >No, what you did was deride a careful and thoughtful analysis by Bruce
- >Dunn by offering a strained analogy between aircraft and spacecraft.
- >I merely pointed out your analogy was flawed.
-
- Oh? Well, let me try again. The main cost component for reuseable
- launch vehicles is not fuel, or even fabrication costs, but maintenance.
- This is even more true for space launchers than for aircraft. Bruce
- offered a careful and thoughtful analysis that would reduce fabrication
- and fuel costs (*if* you accept his handwaving assertion that the lower
- stage would cost less per pound to manufacture) while enormously increasing
- the already-greater maintenance costs.
-
- Now, please point out to me where my analogy is flawed.
-