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- Path: sparky!uunet!portal!cup.portal.com!BrianT
- From: BrianT@cup.portal.com (Brian Stuart Thorn)
- Newsgroups: sci.space
- Subject: Re: Stupid Shut Cost arguements (was Re: Terminal Velocity
- Message-ID: <72526@cup.portal.com>
- Date: Mon, 28 Dec 92 21:38:08 PST
- Organization: The Portal System (TM)
- References: <72332@cup.portal.com> <1992Dec27.204310.21837@iti.org>
- <72482@cup.portal.com> <1992Dec28.154624.1000@iti.org>
- Lines: 53
-
- >However, if you disagree, please post your own numbers. State the rules
- >you want to use and apply to both systems fairly. Then show that Shuttle
- >is better.
- >
- >I await your reply.
- >
- > allen
-
- Now I'm totally confused, Allen. Wasn't this discussion about the
- Shuttle's launch rate? I thought that you previously belittled a
- 25% increase in launch rate, to which I took exception. It was this
- dual-scale measuring (one for Shuttle, one for the others) that I
- am complaining about. I'm still waiting for your explanation as to
- why 25% is a good increase for one, but not another.
-
- And by the way, I don't seem to be alone in the opinion that 12 per
- year is a more likely maximum safe launch rate. That's a 50% increase.
- Hopefully, the next few months will prove that they can launch
- monthly if they wanted and politics permitted.
-
- In any case, since Shuttle is the only U.S. system flying that can take
- people to and from space, and is the only system presently capable
- of returning 30,000+ lbs. of cargo, it is very difficult to compare
- Shuttle with the expendables (although I think it compares favorably
- to Titan IV in terms of annual costs versus annual launch rate.) All
- ratings show Shuttle to be the most powerful launch system in the
- free world. Depending upon whom you ask, it's either alot more capable
- than Titan, or just a little.
-
- Only the DC is presently envisioned to have more or less the same
- attributes as Shuttle, and we both know there is no way Shuttle can
- ever compare favorably to a paper launch system. Pegasus was new and
- revolutionary too, and it has spent the past eighteen months sitting
- in an assembly plant. TSS was new and revolutionary, but was brought
- to its knees by a mislocated bolt. Titan IV was a relatively low-level
- expansion of current technology, but was a year late off the pad and
- has flown at a rate one-fourth of the proposed schedule. GD did a
- relatively minor design change on the Centaur to accomodate greater
- payload, and it has since failed in flight twice. Shuttle has had all
- these problems, and more. Gary and I say similar bugs will afflict
- the DC program, but you tell us not to worry and then call us
- pessimists. Hmph.
-
- -Brian
-
- P.S., Sorry about the multiple posts of my previous message in this
- thread. PortalX crapped out on me in the middle of message uploading.
-
- -------------------------------------------------------------------------
- Brian S. Thorn "If ignorance is bliss,
- BrianT@cup.portal.com this must be heaven."
- -Diane Chambers, "Cheers"
- -------------------------------------------------------------------------
-