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- From: gwh@soda.berkeley.edu (George William Herbert)
- Newsgroups: sci.space
- Subject: Re: Energya and Freedom and Soyuz ACRV and...
- Date: 16 Aug 1992 07:53:05 GMT
- Organization: Dis-
- Lines: 48
- Sender: gwh@soda.berkeley.edu (George William Herbert)
- Message-ID: <16l1h1INNa8t@agate.berkeley.edu>
- References: <1992Aug11.174621.13009@aio.jsc.nasa.gov> <16aaa5INNlav@agate.berkeley.edu> <1992Aug14.130334.8888@ke4zv.uucp>
- NNTP-Posting-Host: soda.berkeley.edu
- Summary: Nothing questionable at all about that number.
-
- In article <1992Aug14.130334.8888@ke4zv.uucp> gary@ke4zv.UUCP (Gary Coffman) writes:
- >gwh@soda.berkeley.edu (George William Herbert) writes:
- >>
- >> Ok, we now have 4 potential solutions (HL-20, Soyuz, 2xPLS above);
- >>Soyuz is $65 million per flight and $500 million to adapt (massively
- >
- >This is a questionable number.
-
- Bullshit. That number is derived from:
- 1) a hard quote on buying Soyuz vehicles that I got, multiplied by three
- to handle currency fluctuations.
- 2) the reported price from a GD Senior Engineer in the Commercial Atlas project
- for a Commercial Atlas vehicle.
-
- When I parametrically estimate, I say so. This is not a paremetric
- estimation. Right now I'm expecting a set of mechanical drawings
- of the Soyuz (I hope...) to do a detail engineering design on the
- payload interface for structure, vibrations, etc. and I hope to
- get some handle on the systems aspect as well. Since we're
- going to fly a bunch of these, the integration design can be
- amortized very easily. The $500 million I quoted for adaptation
- is a massively paranoid parametric estimation. The per-flight is solid.
-
- >> As you've said, neither PLS nor HL-20 is going to Phase B anytime
- >>soon, though it's easy to point out that if they don't, we won't have
- >>a ACRV for PMC Freedom (or for several years later 8-( ). NASA gets
- >>half credit for knowing it needs one and fails the exam for not
- >>acknowledging it and trying to solve the problem by the time the need is
- >>real... 8-(
- >
- >But we will have long duration Shuttles by the time of PMC. So the
- >Shuttle can be crew transport, resupply, material return, and ACRV
- >until we get something better. Not great, but workable with the current
- >fleet. We also get the use of the docked Shuttle's middeck and Canadarm
- >at no extra cost.
-
- Oh great. We're eating up months of shuttle time just sitting them
- at Freedom. With a four orbiter fleet and one permanently on station,
- the number of flights per year will drop around 25% due to less time to
- refurbish (or the same time with a two month delay). We don't need the
- middeck or Canadarm; we've got plenty of lab space (well, not enough, but
- _enough_) and an arm on the station already.
-
- Think these things through...
-
- -george william herbert
- gwh@soda.berkeley.edu gwh@lurnix.com herbert@uchu.isu92.ac.jp until 28 aug
-
-