strange noise heard again on ISS

http://www.usatoday.com/tech/news/20...s-plinks_x.htm

--
Terrell Miller


"It's one thing to burn down the **** house and another thing entirely to
install plumbing"
-PJ O'Rourke

http://www.usatoday.com/tech/news/20...s-plinks_x.htm

http://www.floridatoday.com/news/spa...ryN0403ISS.htm

Shouldnt they have some audio recorders running at all times to help diagnose
such troubles?

every few days they could erase old stuff but having a audio recording of that
noise might be invaluable
Hey this is my opinion

(bob haller) wrote in
:


http://www.usatoday.com/tech/news/20...s-plinks_x.htm

http://www.floridatoday.com/news/spa...estoryN0403ISS
.htm

Shouldnt they have some audio recorders running at all times to help
diagnose such troubles?

every few days they could erase old stuff but having a audio recording
of that noise might be invaluable
Hey this is my opinion


Of course not!
Why on earth would NASA spend so much money on experimental technology to
no use! Who even know if its possible to record in a contained space like
that! Etc....

Seriously though.. I also find the absence of a 24/7 recorder (both audio
and visual) to be a ridiculous oversight. Not only for helping in
investigations like this sound, but also for basic research on zero-g
ergodynamics, human motion studies, etc, etc,etc.

On the other hand, if they ARE recording, why are they so mystified as to
the exact nature and location of this sound? A set of microphones mounted
in the structure would be an *easy* and *cheap* way of identifying,
locating and quantifying impact events on the exterior. Actually for
localising *any* sound source on the station. Surely this is a handy tool?

People figured out the critical need for cockpit recorders on airplanes
several decades ago. If we can afford it for multi-million dollar
airplanes, why not for a multi-billion dollar spacestation?

"Terrell Miller" wrote in message
news
http://www.usatoday.com/tech/news/20...s-plinks_x.htm

Interesting. It sounds more like some unexpected
internal vibration set up under the right harmonics,
perhaps an internal panel or an interim panel in-
between the exterior and the interior, rather than
external damage or impact.

Bruce

In article , says...
(bob haller) wrote in
:


http://www.usatoday.com/tech/news/20...s-plinks_x.htm

http://www.floridatoday.com/news/spa...estoryN0403ISS
.htm

Shouldnt they have some audio recorders running at all times to help
diagnose such troubles?

every few days they could erase old stuff but having a audio recording
of that noise might be invaluable
Hey this is my opinion


Of course not!
Why on earth would NASA spend so much money on experimental technology to
no use! Who even know if its possible to record in a contained space like
that! Etc....

Seriously though.. I also find the absence of a 24/7 recorder (both audio
and visual) to be a ridiculous oversight. Not only for helping in
investigations like this sound, but also for basic research on zero-g
ergodynamics, human motion studies, etc, etc,etc.

On the other hand, if they ARE recording, why are they so mystified as to
the exact nature and location of this sound? A set of microphones mounted
in the structure would be an *easy* and *cheap* way of identifying,
locating and quantifying impact events on the exterior. Actually for
localising *any* sound source on the station. Surely this is a handy tool?

People figured out the critical need for cockpit recorders on airplanes
several decades ago. If we can afford it for multi-million dollar
airplanes, why not for a multi-billion dollar spacestation?

Well, for one thing, there's privacy. Would *you* want to spend six
months to a year of your life in a place where you know that everything
you said and did was being recorded? The idea is to learn how to live
and have a normal work-a-day environment in space -- it's different when
you know you're being watched and listened to constantly. Even in your
off-hours.

Besides, there are a lot of other ways to quantify impact events on a
space station, but they all add weight and complexity. We have cockpit
recorders on airliners, but we don't have recorders and sensors that can
localize airframe failures, for example. Those would have given a lot
of good information on TWA 800, but all we had was "sounds of airplane
break-up" on the cockpit recorder -- not enough data to identify what
was breaking up, or where.

Doug

"Bruce Sterling Woodcock"
sounds more like some unexpected
internal vibration

I agree. Would wager even money that it is a pump, and a panel with the same resonant frequency.

In sci.space.policy Terrell Miller wrote:
http://www.usatoday.com/tech/news/20...s-plinks_x.htm

"Help, I'm trapped in an ISS control panel, and can't get out"...

Are there open mics in the ISS?

Well, for one thing, there's privacy. Would *you* want to spend six
months to a year of your life in a place where you know that everything
you said and did was being recorded? The idea is to learn how to live
and have a normal work-a-day environment in space -- it's different when
you know you're being watched and listened to constantly. Even in your
off-hours.

Wasn't this done on Skylab though?

That's how they nailed the third crew for neglecting to mention some of the
space-sickness they were having.

Granted it wasn't 6 months, but almost 90 days ain't a short little trip
either.

-A.L.

Marvin wrote:
(bob haller) wrote in
:


http://www.usatoday.com/tech/news/20...s-plinks_x.htm

http://www.floridatoday.com/news/spa...estoryN0403ISS
.htm

Shouldnt they have some audio recorders running at all times to help
diagnose such troubles?

every few days they could erase old stuff but having a audio recording
of that noise might be invaluable
Hey this is my opinion


Of course not!
Why on earth would NASA spend so much money on experimental technology to
no use! Who even know if its possible to record in a contained space like
that! Etc....

Seriously though.. I also find the absence of a 24/7 recorder (both audio
and visual) to be a ridiculous oversight. Not only for helping in
investigations like this sound, but also for basic research on zero-g
ergodynamics, human motion studies, etc, etc,etc.

It'd be relatively cheap in terms of power and weight.
I've got an almost ideal unit, that uses about 100mw, and weighs
under 50g for some 4 hours of nearly CD quality sound.

Stick a dozen of these around the station on looped recording, and if
something interesting and non-fatal happens, have the crew stick
them into a laptop and pull out the relevant seconds.

Marvin wrote:
Seriously though.. I also find the absence of a 24/7 recorder (both audio
and visual) to be a ridiculous oversight.

How would you like it if they had microphones throughout your home
transmitting your every sounds to some mission control 7/24 ?

Remember that pilots only spend their working hours on the plane. On ISS, they
live 7/24 on it.

Mission control in Houston is always very careful about inviting themselves
onto the ISS (eg: activating cameras) and ask permission before turning
cameras on.

The impression I have is that are agreements between ground and crews wth
regards to respecting privacy.

the exact nature and location of this sound? A set of microphones mounted
in the structure would be an *easy* and *cheap* way of identifying,
locating and quantifying impact events on the exterior.

No necessarily. First, there is a lot of noise on the russian segment. So
you'd need to have a few microphones to help triangulate the sound. But then,
it may be misleading depending on how the sound travels through the structure.