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- Newsgroups: sci.space
- Path: sparky!uunet!wupost!emory!wa4mei!ke4zv!gary
- From: gary@ke4zv.uucp (Gary Coffman)
- Subject: Re: DC vs Shuttle capabilities
- Message-ID: <1992Dec25.005451.4478@ke4zv.uucp>
- Reply-To: gary@ke4zv.UUCP (Gary Coffman)
- Organization: Destructive Testing Systems
- References: <1992Dec14.175934.5993@iti.org> <ggm2ljr@rpi.edu> <ewright.724699264@convex.convex.com> <1992Dec22.182600.29193@iti.org>
- Date: Fri, 25 Dec 1992 00:54:51 GMT
- Lines: 43
-
- In article <1992Dec22.182600.29193@iti.org> aws@iti.org (Allen W. Sherzer) writes:
- >In <ggm2ljr@rpi.edu> strider@clotho.acm.rpi.edu (Greg Moore) writes:
- >
- >> I think we differ big-time when it comes to DC-1. Allen seems
- >>to me to be saying, "Things will work out, and this is how it will be."
- >
- >From a technical point of view I am saying that a fully reusable SSTO
- >vehicle carrying a reasonable payload (10 to 20 K pounds) and operational
- >costs of $10 to $29 million per flight *CAN* be built with available
- >technology. I also believe that operational costs can drop to $1 to $5
- >million range if utilization is high enough.
- >
- >I believe this partly from my own assessment and the fact that every
- >assessment done has concluded that it is possible. Even the internal
- >NASA assessment say it can be done and that it could save billions.
- >
- >Now this doesn't mean that DC-Y WILL work. The biggest problems however
- >are managerial, not technical. Using conventional government procurement,
- >it will be impossible to build SSTO. Using a commercial like process however
- >should work.
-
- Finally, an intelligent position on SSTO from Allen. I would quibble,
- however, that while there are no known *theoretical* technical issues
- unresolved, there remain numerous practical technical problems to
- solve in the DC program. DC is a complex technical vehicle, even if
- it is designed to be much simpler than Shuttle, and like any complex mechanism,
- teething problems are almost certain to arise. That's the type of contingency
- for which less optimistic management systems provide alternative actions
- and funding. Whether McDD and any government sugar daddies they can attract
- will be willing to continue to fund them through the inevitable setbacks
- remains to be seen. I also suspect that cheaper alternatives to SSTO are
- technically possible with MSTO expendibles for some missions, though whether
- anyone will build them remains unknown. I wish McDD luck, but ask that they
- stay away from Hartsfield International until they've developed a good track
- record of operations.
-
- Gary
-
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