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- Path: sparky!uunet!zaphod.mps.ohio-state.edu!usc!news.service.uci.edu!ucivax!ofa123!Wales.Larrison
- From: Wales.Larrison@ofa123.fidonet.org
- Newsgroups: sci.space
- Subject: Re: Comparative $/lb to LEO (Was: Stupid Shuttle Cost Arguments)
- X-Sender: newtout 0.02 Nov 17 1992
- Message-ID: <n1351t@ofa123.fidonet.org>
- Date: 28 Dec 92 15:44:58
- Lines: 41
-
- David Anderman writes:
- >The Space Shuttle is simply the highest cost (per pound) launch
- >vehicle ever operated.
-
- ** Sigh ** This seems to have become a net legend --
- unfortunately it does not seem to be supported by fact. I've seen
- this statement made numerous times over the past year or so in
- sci.space, but based upon a little bit of research, it seems to be
- wrong.
- To repeat what I posted about a month ago....
-
- David could you provide some data to support this statement?
- For example, Pegasus costs about $14.5 M to put about 950 lbs in 150
- nmi circular 28.5 deg LEO orbit (Cost from the price for the SCD-1
- launch, planned for 1st quarter 1993, performance from the Pegasus
- Users Manual). That's about $15,000/lb.
- In comparison, Shuttle costs (depending on your source) about
- $350-500 M per launch. (As a check on this cost/flight range, the FY
- 1992 NASA budget numbers for shuttle operating costs came to about $
- 3.2 B, and there were a total of 8 flights flown in 1992, which
- gives about $ 400 M/flt, which is within the cost band I'm using).
- For a 50,000 lb shuttle payload delivered to 150 nmi 28.5 deg
- circular orbit, that's about $7000 -10,000 /lb. (Note: shuttle
- fleet average performance to 150 nmi, 28.5 deg circ orbit is
- actually about 56,000 lbs -- so, again I'm being conservative about
- shuttle cost $/lb)
- Titan IV, capable of putting about 32,000 lbs to the same orbit
- (note the T-IV performance is corrected to put payloads into 150 nmi
- 28.5 deg circular orbits) is currently running about $360 M per unit
- (Cost data from the Oct 92 DoD Selected Acquisition Reports), which
- yields about $11,200 /lb.
- From these data points, I think the statement "the most expensive
- per pound in orbit of all current launch vehicles" is incorrect.
-
- If you have better data, I would greatly appreciate it if you
- could post it.
- ----------------------------------------------------------------
- Wales Larrison Space Technology Investor
-
-
- --- Maximus 2.01wb
-