Station isn't so kewl these days?

And is it the *new* pump that has the valve that is misbehaving?

I've forgotten if the crew was up to six at the time the pump was
replaced. Heck, that was way back when NASA was using winged
spacecraft.

/dps

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Maybe C282Y is simply one of the hangers-on, a groupie following a
future guitar god of the human genome: an allele with undiscovered
virtuosity, currently soloing in obscurity in Mom's garage.
Bradley Wertheim, theAtlantic.com, Jan 10 2013

Well, who knows, but I'd assume things will get fixed. Or isit a plot to get
all those inside naked?
Brian

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From the Sofa of Brian Gaff Reply address is active
"Snidely" wrote in message
news:mn.72887ddce1f413ca.127094@snitoo...
And is it the *new* pump that has the valve that is misbehaving?

I've forgotten if the crew was up to six at the time the pump was
replaced. Heck, that was way back when NASA was using winged spacecraft.

/dps

--
Maybe C282Y is simply one of the hangers-on, a groupie following a future
guitar god of the human genome: an allele with undiscovered virtuosity,
currently soloing in obscurity in Mom's garage.
Bradley Wertheim, theAtlantic.com, Jan 10 2013

Sounds a bit ad hoc to me. I see a press release saying that it will be
three space walks, on on Christmas day. I imagine this needs to be sorted
soon though, as they will be anxious to find out exactly what has caused the
valve to fail. Its a bit odd as its not the first time amonia hardware has
been a problem.
Brian

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"JF Mezei" wrote in message
eb.com...
An update from NASA on Youtube:
http://www.youtube.com/watch?v=E_aXU...DI-naOwo1H5gaB


It isn't a failed pump, it is a failed flow control valve.

What they are trying now is to use an "on/off" valve downstream to
control the flow. They hope to be able to modulate that on/off valve to
simulate variable flow to keep the ammonia temperatures within ranges.

If this trick works (they are evaluating/testing it now), it may allow
the spacewalk to be postponed.

I thought the idea was as an extra pair of hands so to speak. I'm not sure
its sensitivity and controllability havebeen sorted out as yet, as using
human type tools outside is a very much tactile experience even inside thick
gloves, it remains to be seen how a remote controlled device can feed back
the information we get from our handse, form itis 'hands' in a meaningfulway
to allow it to be useful to others.
Brian

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From the Sofa of Brian Gaff Reply address is active
"JF Mezei" wrote in message
b.com...
On 13-12-18 05:17, Brian Gaff wrote:

valve to fail. Its a bit odd as its not the first time amonia hardware
has
been a problem.

It is not that odd. I believe that NASA expected any systems that are
outdoors to have higher rates of failure. This is one reason that Canada
supplied DEXTRE along with the canadarm in order to make it possibe to
fix things without EVAs. But so far, I am not sure DEXTRE has been of
any use. Perhaps it was designed for very specific tasks only.