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NNTP-Posting-Date: Sun, 09 Jun 2024 22:09:26 +0000
From: Joe Gwinn <joegwinn@comcast.net>
Newsgroups: sci.electronics.design
Subject: Re: Challenger
Date: Sun, 09 Jun 2024 18:09:24 -0400
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On Sun, 09 Jun 2024 11:47:50 -0700, john larkin <jl@650pot.com> wrote:

>On Sun, 9 Jun 2024 17:29:13 -0000 (UTC), Cursitor Doom
><cd999666@notformail.com> wrote:
>
>>On Sun, 09 Jun 2024 08:08:26 -0700, john larkin wrote:
>>
>>> On Sun, 9 Jun 2024 08:21:52 +0100, Jeff Layman <Jeff@invalid.invalid>
>>> wrote:
>>> 
>>>>On 09/06/2024 03:42, john larkin wrote:
>>>>> https://www.amazon.com/Challenger-Story-Heroism-Disaster-Space/dp/
>>198217661X
>>>>> 
>>>>> This is a very well researched and written book, and a sad, ghastly
>>>>> story.
>>>>> 
>>>>> It reminds me that humans have no purpose in space but to die.
>>>>
>>>>That's a very jaundiced and negative view. Firstly, they weren't in
>>>>space when they died; they were at 46000 feet, which was below the
>>>>operational height of Concorde.
>>> 
>>> Dead is dead. Optimistically, they died instantly but probably not.
>>
>>I would guess it must have been very much like being exposed to a nuclear 
>>blast. So basically frazzled to death over several seconds. Not nice.
>
>The crew may have been alive when the cabin hit the water. The
>recovery of the remains and the forensics was grim. I'm shocked that
>NASA ever flew another shuttle.
>
>The tiles and the SRBs and the external tanks and the engines were all
>known hazards. Columbia was the nail in the coffin.
>
>Two shuttles out of five were lost. NASA estimated that the loss rate
>would be 1 in 100,000 flights.

Hmm.  I recall estimates of one in four from the days of Feynman and
the investigation into the Challenger loss.  Maybe that was the post
crash estimate, but I don't think even NASA would think that one in
10^5 was realistic, as that rate is more like civil aviation in the
1950s and 1960s (with accidents like the Electra).

..<chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://www.boeing.com/content/dam/boeing/boeingdotcom/company/about_bca/pdf/statsum.pdf>

Joe Gwinn