Air Force Claims To Have Solved Fatal F-22 Oxygen Riddle 172
Hugh Pickens writes "DefenseTech reports that Air Force Maj. Gen. Charles Lyon, the director of operations for Air Combat Command, told the Pentagon press corps that a valve that inflates the Combat Edge upper pressure garment is the cause of hypoxia-like symptoms in pilots flying the F-22. The problem forced the service to ground the Air Force's most prized stealth fighter fleet for four months and led two Raptor pilots to tell the nation on CBS's 60 Minutes that they refused to fly the jet because the pilots feared for their lives. The vests help control the breathing of pilots in high G-force environments, inflating before pilots start to experience extreme G-force conditions. However Lyon explained that the valves caused the vests to inflate too early in an F-22 flight, causing pilots to hyperventilate in the cockpits. 'It's like putting a corset around your chest,' said Lyons. Eagle and Viper pilots stopped wearing the upper pressure garments in 2004 'because they were not giving us the contribution we thought they would,' said Lyon. F-22 pilots kept wearing them because they flew at higher altitudes and the vests protected the pilots from 'rapid decompression,' adding that F-22 pilots, many of whom flew the F-15 and F-16, didn't notice the vests had inflated early because of the layers of gear a pilot wears in flight. Such a simple answer to a problem that has eluded Air Force engineers and scientists for four years has left some Air Force pilots skeptical that the USAF has solved the problem. An F-16 pilot said the Air Force is either 'incompetent for missing this until now,' or 'dishonest and trying to sweep something under the rug.'"
F-16 Viper? (Score:4, Interesting)
Re:Covering up for a crony? (Score:3, Interesting)
The big defense contractors are definitely in bed with the government...
Oh please, you're just now understanding the Real World? Put on your big boy pants. The REAL story here is if an improper lube can cause a system to fail, what does that say about modern American aircraft design? Out in the field units run out of things. I think we need to start designing things for real-world combat again. Read about the differences between an M-16 and an AK-47 some time.
Re:F-22 - without a doubt the world's best fighter (Score:5, Interesting)
And meanwhile the after action reports from the conflicts fought in the last 25 years have all said the same thing: need more A-10's and B-52's.
It still seems to me that the best course of action would have been to invest a little in an update of the F-15 20 years ago and kept it in production a little longer similiar to what the Navy did with the F-18 Super Hornet. (I think R&D for that was around $200M).
The only problem with the F-15's is not that it's being out classed even today as it is the number of flight hours on the existing airframes.
Re:Covering up for a crony? (Score:4, Interesting)
Yes. YEARS ago (probably more years than most /. readers have been alive), I was at a conference, and there were talking about one of the HUGE differences in the F15-A and the F-15C that almost no one talks about. It seems THE most common failure part on the A was a fuel pump (or something similar) that took HOURS to replace - you had to take down the center line fuel tank, open lots of panels etc. When the did the C, they put it in a spot to make it easy to get to - instead of something like a 20+ hour job, it became something like a 1-2 hour job. THAT is the kind of thing you learn as you build enough of an airplane for a long enough time to say "Hey, lets change X"