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Author
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Topic: STS-118: NASA probing shuttle cabin leak
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cspg
Member Posts: 6210
From: Geneva, Switzerland
Registered: May 2006
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posted 08-01-2007 01:06 AM
   
Associated Press:
NASA probing space shuttle cabin leak
Tue Jul 31, 6:11 PM ET quote:
A week before Endeavour's planned liftoff, NASA was analyzing a cabin leak in the space shuttle Tuesday. The leak was detected over the weekend. NASA thought it fixed the problem by tightening a loose bolt, but testing Monday night confirmed air was still escaping from the crew cabin, said NASA spokeswoman Tracy Young.Engineers have yet to pinpoint the leak, which could require so much work that NASA might not be able to launch Endeavour on Aug. 7.
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Max Q
Member Posts: 399
From: Whyalla South Australia
Registered: Mar 2007
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posted 08-01-2007 04:00 AM
" tightening a loose bolt "now theres something I don't think I would like to hear about in a launch vehicle. What next a rattle under the dash. |
lunarrv15
Member Posts: 1355
From: Cincinnati, Ohio, Hamilton
Registered: Mar 2001
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posted 08-01-2007 10:54 AM
The leak has been found. quote:
The search was well and truly on to try and find the cause of a leak onboard Endeavour over the last 12 hours, one which needs to be corrected in order for her to launch next Tuesday. After several leak checks, the culprit was found, a Positive Pressure cabin Relief Valve B (PPRV B) - one of two valves - with engineering discussions to take place around noon on whether to change it out, along with what impacts that may have on the STS-118 launch date.
Found on NASASpaceflight: Leak culprit found on Endeavour - meetings to decide actions |
spacekid2
Member Posts: 199
From: San Diego, CA, USA
Registered: Jul 2004
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posted 08-01-2007 07:02 PM
This is interesting but I believe not unheard of. My father was an Airline captain for 35 years. He often flew cabin flight checks with engineers aboard to track down a high speed cabin air leak. This was aboard a DC-9/80. The leak would only become aware at cruising altitude. There was a high pitched (like a balloon) sound of air leaking. The engineers had listening devices to pin-point the leak location. I was able to come along one time and watch. I am just glad they don't have to take the Shuttle up to find the leak. Paul |
Robert Pearlman
Editor Posts: 42988
From: Houston, TX
Registered: Nov 1999
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posted 08-01-2007 07:04 PM
From SpaceflightNow:
Shuttle valve to be replaced without impact to launch quote:
NASA managers today ordered engineers to replace a suspect positive pressure relief valve in the shuttle Endeavour's crew module to fix an apparent leak that showed up over the weekend during routine launch pad testing.While the schedule is tight, engineers expect to complete the work in time for Endeavour's launch Tuesday on a space station assembly mission. "It's extremely tight," a NASA spokesman said late today. "On paper, yes, we can make it. But everything has to go right from this point forward."
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DCCollector
Member Posts: 227
From: Washington, DC USA
Registered: Dec 2006
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posted 08-01-2007 09:07 PM
I am taking my parents down to Florida for the launch (my first one), so I appreciate the updates on the launch schedule here! |
NavySpaceFan
Member Posts: 655
From: Norfolk, VA
Registered: May 2007
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posted 08-03-2007 09:35 AM
Space.com is reporting that the second leak check was a success!!! |
divemaster
Member Posts: 1376
From: ridgefield, ct
Registered: May 2002
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posted 08-03-2007 10:20 AM
Did they fix the early 1980's problem with the waste control system by jiggling the handle?It always works for me.
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