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- From: ewright@convex.com (Edward V. Wright)
- Subject: Re: Latest Pegasus news?
- Sender: usenet@news.eng.convex.com (news access account)
- Message-ID: <ewright.726430156@convex.convex.com>
- Date: Thu, 7 Jan 1993 18:09:16 GMT
- References: <1992Dec27.203327.21241@iti.org> <1992Dec31.004513.12224@ke4zv.uucp> <ewright.725820266@convex.convex.com> <1992Dec31.182405.7430@iti.org> <1993Jan4.174720.11639@ke4zv.uucp> <ewright.726182846@convex.convex.com> <1993Jan7.080605.1770@ke4zv.uucp>
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- Organization: Engineering, CONVEX Computer Corp., Richardson, Tx., USA
- X-Disclaimer: This message was written by a user at CONVEX Computer
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- Lines: 70
-
- In <1993Jan7.080605.1770@ke4zv.uucp> gary@ke4zv.uucp (Gary Coffman) writes:
-
- >Apollo came in on time, as crash military programs sometimes do, and
- >near budget, a budget more than double that of Shuttle in constant
- >dollars, but where is it now?
-
- You didn't say previous spacecraft were expensive to develop,
- or that, once developed, they might be cancelled for political
- reasons. You said that had 200% overruns.
-
- If you can't answer the question, change the subject. :-)
-
-
- >It's you who expouses your whole cloth failure-seeking strawman. I
- >expouse careful engineering planning for the inevitable developmental
- >setbacks in any new venture.
-
- There's a difference between careful engineering planning -- which
- is just what was done in Project Apollo and is being done with
- Delta Clipper and which you *hate* -- and spending three times
- as much as the cost of the project on feasiblity studies, management
- reviews, cost reviews, and redundant paperwork. That's what you
- espouse. (Even the Shuttle program did not have enough unnecessary
- overhead to please you.)
-
-
- >That's not failure seeking, that's failure avoiding by providing
- >alternatives to risky sections of a program.
-
- Yet Project Apollo, which you rail against, was a success. And
- the Shuttle program, which you consider much better (though not
- perfect) was a failure.
-
- I guess when it comes to pleasing you, nothing succeeds like failure.
-
-
- >There's a vast difference between the incremental improvements from
- >one aircraft to the next in the series and in a clean sheet of paper
- >design by a team who has never done any similar work. Name 5 vertical
- >takeoff and landing reusable spacecraft designed by the MacDD team.
-
- Name five jet airliners designed by Boeing before the model 707.
- Name five unducted fanjets flying today.
-
- Real engineers develop "clean sheet designs" all the time. The
- principles of engineering do not stop working just because a new
- design operates in 0 psi instead of 5 psi.
-
- I don't want to belabor the obvious, but since you seem to be
- oblivous to suc things....
-
- There have been hundreds of vertical takeoff and landing
- vehicles built over the last 50 years. Most of them are
- called helicopters and, to best of my knowledge, every one
- of them was reuseable. A non-reuseable helicopter would
- have been too expensive to develop, let alone operate.
-
- Yet you don't claim that a helicopter is nearly impossible
- to build. It's the word "spacecraft" that makes you bug
- your eyes and wet your pants.
-
-
- >Knowledge of NACA airfoils and high
- >bypass turbofans just doesn't transfer to vertical takeoff and landing
- >rockets no matter how much you wave your hands about it.
-
- Gosh. It guess it's a good thing that spaceships don't need
- airfoils or high-bypass turbofans.
-
-
-