low-level-sensor flight shutdown -- happened once already, but when?

On Mon, 18 Jul 2005 02:23:30 GMT, Christopher P. Winter
wrote:

On Thu, 14 Jul 2005 13:03:13 GMT, "Jim Oberg"
wrote:

I recall that there's been at least one actual
shuttle launch where a low-level sensor triggered
shutdown earlier than scheduled -- but nobody seems
to have any record of this at NASA. Does anyone
else recall which flight this was?

I'm remembering it was an ISS mission, and the
shutdown was within a few tenths of a second of the nominal one,
so there was not any significant orbital impact and the mission
proceded as planned.


Off the top of my head, that was the 1985 flight with the first amateur
radio on the orbiter. I remember because I was one of the horde of hams who
tried to make contact. (I didn't.) The name of the astronaut ham is right on
the tip of my tongue...

IIRC it was a failed thermocouple that caused one of the three SSMEs to
shut down early, resulting in an ATO.

Talk about crossed neurons -- A little research showed that I was
thinking of STS-51F, in July 1985. That was the Spacelab 2 mission with Loren
Acton on board for solar physics observations. And it was his name that kept
popping into my mind, but I knew he wasn't the ham I was thinking of. I
haven't tracked that down yet; it was obviously a different flight.

And yes, none of this has anything to do with fuel-level sensors.

On Mon, 18 Jul 2005 02:52:43 GMT, Christopher P. Winter
wrote:

On Mon, 18 Jul 2005 02:23:30 GMT, Christopher P. Winter
wrote:

On Thu, 14 Jul 2005 13:03:13 GMT, "Jim Oberg"
wrote:

I recall that there's been at least one actual
shuttle launch where a low-level sensor triggered
shutdown earlier than scheduled -- but nobody seems
to have any record of this at NASA. Does anyone
else recall which flight this was?

I'm remembering it was an ISS mission, and the
shutdown was within a few tenths of a second of the nominal one,
so there was not any significant orbital impact and the mission
proceded as planned.


Off the top of my head, that was the 1985 flight with the first amateur
radio on the orbiter. I remember because I was one of the horde of hams who
tried to make contact. (I didn't.) The name of the astronaut ham is right on
the tip of my tongue...

IIRC it was a failed thermocouple that caused one of the three SSMEs to
shut down early, resulting in an ATO.

Talk about crossed neurons -- A little research showed that I was
thinking of STS-51F, in July 1985. That was the Spacelab 2 mission with Loren
Acton on board for solar physics observations. And it was his name that kept
popping into my mind, but I knew he wasn't the ham I was thinking of. I
haven't tracked that down yet; it was obviously a different flight.

And yes, none of this has anything to do with fuel-level sensors.

The astronaut ham was of course Owen Garriott. He operated amateur
station W5LFL aboard the Spacelab 1 mission in 1983.

David Ball ) writes:
On 14 Jul 2005 16:34:04 GMT, (Andre Lieven)
wrote:

More details on this aspect of STS-93 can be found in Jenkins, 3rd
edition, pages 316-317.

ISBN ???

1 85780 116 4. The main title is " Space Shuttle ". Dennis R. Jenkins,
author.

I cannot state this too strongly: If one is interested in the whole
space shuttle program, this is THE book to get.

I got my copy via overstock.com, for about $22. I've also seen it for
a bit less at a wonderful remainder book sale in Lansing, MI, at the
end of May ( If anyone can get there, it was on Cedar Street, a bit
south of the Holiday Inn, which is on the same street, just south of
the I-96. ). We dropped about $150 there, then.

Andre

--
" I'm a man... But, I can change... If I have to... I guess. "
The Man Prayer, Red Green.

On 21 Jul 2005 15:53:28 GMT, (Andre Lieven)
wrote:

1 85780 116 4. The main title is " Space Shuttle ". Dennis R. Jenkins,
author.

I cannot state this too strongly: If one is interested in the whole
space shuttle program, this is THE book to get.

I got my copy via overstock.com, for about $22. I've also seen it for
a bit less at a wonderful remainder book sale in Lansing, MI, at the
end of May ( If anyone can get there, it was on Cedar Street, a bit
south of the Holiday Inn, which is on the same street, just south of
the I-96. ). We dropped about $150 there, then.

Isn't it amazing how easy it is to spend money at bookstores! I know
that problem well :-)

-- David