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Oxygen Problems on F-22 Elude the Air Force’s Fixes
JOINT BASE LANGLEY-EUSTIS, Va. — Capt. Jeff Haney was at 51,000 feet on a night flight above Alaska in November 2010 when the oxygen system in his F-22 Raptor fighter jet shut down, restricting his ability to breathe as he plummeted faster than the speed of sound into the tundra below. His plane burned a crater into the ice, froze 40 feet beneath the surface and was not fully recovered until the spring thaw. (www.nytimes.com) Ещё...
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It's amazing that for $400M they can't find and fix the problem.. One of the most disturbing things is that some of the incidents/accidents related to the oxygen system have been blamed on pilot error. It's hard to fly any plane when you don't have adequate oxygen in your system.
Watch for the drones to take over the skies for security.
Especially along the southern watch.
Especially along the southern watch.
No excuse for this problem......not really sure but from what I've read the F22 generates breathable air via equipment on board the aircraft. To get a good idea of this works I believe either 60 Minutes or 20/20 did a special report on this issue not that long ago. I'm not an aeronautical engineer but why couldn't a bottle of compressed breathable air be placed somewhere in the aircraft for the pilots to use as a supplement to thier current system on the aircraft now. Just saying...
There is an emergency oxygen bottle built into the ejector seat, supposedly, but it has to be manually activated by the pilot in flight when he decides he needs it, or it is automatically activated when he ejects.
The problem is, the F22 was designed with an intelligent software controlled environmental and thermal management system, with such clever features as being able to automatically shut-off oxygen in the event that a leak is detected. (Presumably to prevent fire)
http://www.dailyhampshiregazette.com/2012/03/21/af-to-modify-f-22-following-fatal-crash
...but whoever wrote that line of code that automatically shuts off the oxygen system didn't think about the interim when the pilot has no oxygen at all, so they blame the pilot for not pulling the emergency handle quickly enough. Perhaps the emergency oxygen should have been automatic too?
Everything surrounding the F22 oxygen system debacle reads like a textbook of what not to do in systems engineering. I think maybe a few folks at Lockheed and Honeywell probably need to lose their jobs over this, and maybe even go to jail for gross negligence.
The problem is, the F22 was designed with an intelligent software controlled environmental and thermal management system, with such clever features as being able to automatically shut-off oxygen in the event that a leak is detected. (Presumably to prevent fire)
http://www.dailyhampshiregazette.com/2012/03/21/af-to-modify-f-22-following-fatal-crash
...but whoever wrote that line of code that automatically shuts off the oxygen system didn't think about the interim when the pilot has no oxygen at all, so they blame the pilot for not pulling the emergency handle quickly enough. Perhaps the emergency oxygen should have been automatic too?
Everything surrounding the F22 oxygen system debacle reads like a textbook of what not to do in systems engineering. I think maybe a few folks at Lockheed and Honeywell probably need to lose their jobs over this, and maybe even go to jail for gross negligence.
Wingscrubber I couldn't agree more!!!
ya thank?
