Re: Future of Orion??

fairwater@xxxxxxxxx (Derek Lyons) wrote in news:45faaae3.856300171
@news.supernews.com:

André, PE1PQX <pe1pqx_geenviagra@xxxxxxxxx> wrote:

Op 8-3-2007, heeft Derek Lyons verondersteld :
André, PE1PQX <pe1pqx_geenviagra@xxxxxxxxx> wrote:

Derek Lyons was zeer hard aan het denken :
"Jorge R. Frank" <jrfrank@xxxxxxxxxxx> wrote:

It's not like we had a significant experience base to go stale in the
first place Jorge. Not only did the Mercury-Gemini-Apollo series
overlap each other to a large degree, they were all essentially first
generation systems.[1] Each program experienced significant flight
anomalies, and in Apollo's case, had at least two inflight failures
(15 docking, 17 SPS) that could easily have lead to LOM or LOCV.

inflight failures: What about Apollo 13 (exploded O2 tank)??

I discounted Apollo 13 because the accident was caused by component
damage during handling - unlike 15 and 17 where the causes are unknown
and could easily be failure modes which are rare but inherent to the
design. Apollo 13 type accidents from human error can happen even in
a mature program, 15 and 17 type incidents we cannot classify as the
causes are unknown.

D.

Then I'd like to know what happened on Apollo 15 and 17, did not know
there were some accidents during those flights.

15 was unable to dock to the LM during initial T&D - until 'brute
forced'. 17 suffered a failure of the primary control cables across
the gimbals between the SM and the SPS.

You sure you got the mission numbers right? I recall the docking failure on
14, and the SPS gimbal problem on 16.


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