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- From: roberts@cmr.ncsl.nist.gov (John Roberts)
- Newsgroups: sci.space
- Subject: Re: Comparative $/lb
- Message-ID: <C0256x.MxH.1@cs.cmu.edu>
- Date: 30 Dec 92 05:42:04 GMT
- Article-I.D.: cs.C0256x.MxH.1
- Sender: news+@cs.cmu.edu
- Distribution: sci
- Organization: National Institute of Standards and Technology formerly National Bureau of Standards
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-
- -From: David.Anderman@ofa123.fidonet.org
- -Subject: Re: Comparative $/lb to LEO (Was: Stupid Shuttle Cost Arguments)
- -Date: 29 Dec 92 16:31:24 GMT
-
- -The Space Shuttle is the most expensive launch vehicle (per pound in orbit)
- -that exists today. I believe this, but cannot prove it.
- -...
- -However, I freely that I hold this opinion largely on the basis of a gut
- -feeling, rather than the available numbers.
-
- Please inform your gut :-) that such comparisons are not very useful unless
- accompanied by lots of substantiating math. The markets for Shuttle and
- Pegasus are different anyway. The "cost per pound" of launching a KH-12
- by Pegasus would be pretty impressive. :-) On the other hand, direct
- Shuttle launch to polar orbit would be pretty expensive, since the
- Vandenberg facility is mothballed.
-
- Dennis has pointed out (but nobody else seems to believe) that there are
- many ways of figuring cost, based on your application - marginal cost of
- a single flight, operational costs, operational plus development for
- future launches (which is what's usually used for the Shuttle), and
- operational plus amortization of all development costs. There's not a
- single number you can point to and say "that number is the cost - use it
- for all accounting".
-
- John Roberts
- roberts@cmr.ncsl.nist.gov
-