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- Path: sparky!uunet!gumby!wupost!zaphod.mps.ohio-state.edu!rpi!kentm
- From: kentm@aix.rpi.edu (Michael V. Kent)
- Subject: Re: Shuttle replacement, STS-52 half-full
- Message-ID: <gpw1tpp@rpi.edu>
- Nntp-Posting-Host: aix.rpi.edu
- Organization: Rensselaer Polytechnic Institute, Troy, NY
- References: <69532@cup.portal.com> <1992Nov15.060518.20381@cs.sfu.ca> <69647@cup.portal.com>
- Date: Tue, 17 Nov 1992 05:40:26 GMT
- Lines: 45
-
- In article <69647@cup.portal.com> BrianT@cup.portal.com (Brian Stuart Thorn) writes:
-
- >P.S., I consider myself more than mildly supportive of the Space Shuttle,
- >but when NASA starts flying half-empty Space Shuttles and saying "the mission
- >was full", I get worried.
-
- I was just trying to explain, not defend, NASA's position as I see it. Both
- ground control and the astronauts claimed that they were very busy and work-
- ing 12 - 16 hour days. They may not have had the crew time to support an
- additional payload, I don't know. I do know that payload volume is not the
- only constraint.
-
- I can think of several ways to work around the problem:
-
- 1) Launch the LAGEOS on a Delta. This could have been done rather easily,
- in my opinion.
-
- 2) Launch IRIS on another or the same Delta. This would have required a
- significant development that NASA may have had to pay for. IRIS was
- developed as an upper stage for Shuttle commercial payloads. After
- commercial satellites were removed from the manifest, NASA agreed to
- launch LAGEOS as its first and only IRIS payload. This was probably
- important for international relations as I suspect, but don't know,
- that Italy wanted data on what is for it a substantial rocket develop-
- ment program. Thus IRIS, not just LAGEOS, needed to be flown.
-
- 3) Add another astronaut to the crew. If crew time was indeed the constraint
- as I suspect, that fact should have been obvious early enough to add a-
- nother astronaut to run the additional payload in the payload bay.
-
- 4) Make it an EDO flight. Again, if crew time were the constraint, adding
- the EDO pallet would add another two man-weeks to the flight.
-
- For reasons not obvious to me, NASA is only flying one EDO flight per year.
- The incremental cost of making a regular Columbia flight an EDO flight is
- rather low. If it were up to me, Columbia would be flying EDO every flight,
- even if half of it were nothing but astronauts floating around in LBNPs.
-
- Mike
-
- --
- Michael Kent kentm@rpi.edu
- McDonnell Douglas Rensselaer Polytechnic Institute
-
- Tute Screwed Aero Class of '92 Apple II Forever !!
-