Historical Precedent For Upper Stage Failures?

Rand Simberg wrote:

The difference is that many, many B-25 flights required parachutes...

I'm still looking for a single instance in the history of the space
program in which a redundant raceway for commands to the LAS would
have saved a crew.


How about the burn-through sensors on the Shuttle's SRBs combined with
the solid fuel escape engines to peel the Orbiter off the stack?
Both were removed to keep the cost to bare minimum.

Pat

PM wrote:



Wrong. President Bush is one of the finest presidents.

You're right, he is.
Through careful dint of hard work and perseverance of wrong-headed
effort no matter what the odds, he managed to pretty much annihilate the
entire concept of right-wing Republican politics and interventionism -
as was championed by the neoconservatives - inside of seven years, and
at a fairly low cost of lives.
Our nation owes him our eternal blessing for having done so.
If, at any point in the future, there is a Republican president, how
quickly do you think he'll get into a war to bring liberty to the world
at gunpoint?
If we're really lucky, he might well have fractured the Republican party
in half, so that the old-line Goldwater Republicans can scatter the
wackos to the four winds.

The worst was Jimmy Carter. It is because of his administration and
failed foreign policies that brought much of the problems we see today
in the world.

Jeeze... wasn't he the guy that negotiated the North Korean nuclear
disarmament treaty that we've just embraced?

Pat

On Thu, 05 Apr 2007 21:32:36 -0400, PM wrote:

Wrong. President Bush is one of the finest presidents.

...."PM"? You kids don't suppose that "PM" could stand for "Cnhy
Znkfba", do you?

OM
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On Thu, 5 Apr 2007 20:24:05 +0000 (UTC), Rick Jones
wrote:

OM wrote:
...Interesting to note that Mark hasn't added the Falcon-2 shot to

picking a nit, but wouldn't that be Falcon1-2?

....So says the kid who's too dumb to know you don't trespass on a
Gamma Bomb Testing Ground just before they fire one of those off.

OM
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] OMBlog - http://www.io.com/~o_m/omworld [
] Let's face it: Sometimes you *need* [
] an obnoxious opinion in your day! [
]=====================================[

OM wrote:

..."PM"? You kids don't suppose that "PM" could stand for "Cnhy
Znkfba", do you?


Sounds like a hidden plot to me.
Speaking of hidden plots, back when I went to the USSR in the winter of
1978-1979, if the went behind Lenin's mausoleum, guess who you found a
seven-foot-high statue of, with no explanation of as to why it was there?
Come on, guess.
He smoked a pipe...does that help?

Pat

On Fri, 06 Apr 2007 00:55:37 -0500, Pat Flannery
wrote:

OM wrote:

..."PM"? You kids don't suppose that "PM" could stand for "Cnhy
Znkfba", do you?

Oh, I so don't care if it's OM, PM, AM or BM... All the same.

Sounds like a hidden plot to me.
Speaking of hidden plots, back when I went to the USSR in the winter of
1978-1979, if the went behind Lenin's mausoleum, guess who you found a
seven-foot-high statue of, with no explanation of as to why it was there?
Come on, guess.
He smoked a pipe...does that help?

They've got a 7' statue of MacArthur hidden away? They should put it
on eBay.

Dale

On Fri, 06 Apr 2007 00:55:37 -0500, Pat Flannery
wrote:

He smoked a pipe...does that help?

....J.R. "Bob" Dobbs has a statue in Lenin's Tomb??

OM
--
]=====================================[
] OMBlog - http://www.io.com/~o_m/omworld [
] Let's face it: Sometimes you *need* [
] an obnoxious opinion in your day! [
]=====================================[

OM wrote:

...J.R. "Bob" Dobbs has a statue in Lenin's Tomb??

Joke T-shirt to my best friend on his birthday several years ago:
"Comrade Stalin, I have a bet with Beria that I can make you say more
than two words tonight!"
"Kill him."

Pat

Michael Turner wrote:

Frankly, the only thing I'm getting out of looking into this question
is a newfound curiosity about Grover Cleveland.

I'm wondering if President Garfield was a big fan of lasagna.

Paul

"Rand Simberg" wrote in message
...
On Thu, 5 Apr 2007 21:48:48 +0000 (UTC), in a place far, far away,
Rick Jones made the phosphor on my monitor glow
in such a way as to indicate that:

Ok, another missive from the peanut gallery. For some probably
illogical reason, the discussion about removing redundancy from a crew
abort system makes me think of Catch-22 and Yosarian finding an M&M
Enterprises share in place of his parachute.

The difference is that many, many B-25 flights required parachutes...

I'm still looking for a single instance in the history of the space
program in which a redundant raceway for commands to the LAS would
have saved a crew.


I'm not sure this is really the right approach to take. Just because it
hasn't happened in the past, doesn't really mean you don't need it in the
future.

Up to Apollo 13 we didn't think we needed a redundant set of cryo tanks in a
separate location in the CM.

I think you're better off looking at failure modes and how likely a
redundant raceway is to solve them.


--
Greg Moore
SQL Server DBA Consulting Remote and Onsite available!
Email: sql (at) greenms.com http://www.greenms.com/sqlserver.html