Japan's kadena air force base (AP) - a few years ago F - 22 pilot in the cockpit began to get dizzy, struggle to breathe, he tried to pull out of the fatal traffic accidents, the former two on television said, the plane is so safe, they don't fly, a small circle the United States air force experts know what is wrong precious stealth fighter.
Cough in pilot and fear, pollutants are leakage to their breathing apparatus leading experts to doubt defect oxygen system F - 22 "bird of prey, especially from beersheba in extreme high altitude condition, $190 million of the plane is not equal. Them ten years ago established a working group to study the problem, the establishment of an informal, but unique think-tank.
The ap has obtained by internal documents and e-mails show that in 2005, they put forward a series of solutions, including adjusting oxygen flow for the pilot's mask. The military officials would not increase the cost has been far more than the budget process, but the key proposal was rejected.
"Read" this project has no money, in 2007 the last minutes of meetings.
The working group meeting, PowerPoint presentation files and email in its members record reveals a missed opportunity of the air force, in order to improve pilot safety 187, aircraft fleet a series of high-profile problems before the damaged aircraft, is has been image attack congress cost is too high. F - 22 production standstill last year spring plane never used in combat.
Work in groups of warning report problem:
- 2008, the pilot started in hypoxia and so on problem report a sharp increase, forcing finally admitted that the air force F - 22 of oxygen supply system concerns.
- two years later, oxygen system is a fatal crash. Although the final is believed to be the pilot operation of the error reason stranded for four months, in 2011, the team.
- put new restrictions, in 5 months, two frame F - and the pilot on the CBS program "60 minutes", continue to express their doubts.
The air force says, F - 22 is safe flight - a dozen aircraft July Japan began six months of deployment - but will remain in situ flight restrictions, under the condition of high altitude, the pilot's breathing is according to value most.
One of the working group suggestion repair, backup oxygen system, is expected by the end of the year. And the air force, in a wrong valve in the pilot vest, accusing oxygen deficiency also said, this problem is a fixed work. The working group also puts forward the early warning system of change, to remind the pilot system failure, and calls for strengthening the tracking of potential health hazard pilots and ground crew for use, in order to enhance the stealth material - 2 more problems air force after the investigation focused on.
More widely said, the United States air force is now in admitted that, although his expert, deal with F - 22 problem, it is too radical cut life support plan, to ensure the safety of the pilot. It is now in the process of reconstruction.
F - and the gradual recovery regular flight operation as follows a detailed survey, in the past year, the air force, NASA, by lockheed Martin company produces the plane, and other industry officials of experts.
However, through the AP obtained documents show, in the investigation of the proposed many attention has summarized the working group, founded in 2002, the fighter is still in the early stages of production and delivery.
It says themselves as RAW - G, raptors aviation medicine group, and collected dozens of experts, avionics, physiology and the security of the system, and life support and F - 22 crew and maintenance.
The group set up F - and the society to pay more attention to the unique needs may affect the pilot of the plane. You can hide from radar fighter, faster than the speed of sound, do not use after-burners, ability to any other countries can not reach. It is better than its predecessor, have an independent oxygen generation system of chemical or biological weapons attack, in order to protect the pilot fly higher.
According to the air force, RAW - G Daniel · bosom mann's advice, and then in a Florida Tyndall air force base flight surgeon, one of the first F - 22 squadron be deployed. Bosom man is a brigadier general and air combat command general surgeon.
RAW - G a good reading, some pilots have appeared to have a problem called "bird of prey cough" - suitable for chest pain and the coughing dates back to 2000, dry air from tired in lung collapse.
The conclusion of the expert group, F - 22 of the airborne oxygen generation system - OBOGS - the pilot too much oxygen, lead to cough. More often and higher pilot oxygen saturation, team members think, more vulnerable to conditions of the pilot will be other physiological events.
RAW - G recommend more tests, and through the digital controller and software upgrade F - 22 of oxygen transfer system to adjust.
"Schedule provide less oxygen, and the lower height above sea level than the current schedule, this is called the late-occurred ear piece and accelerating atelectasis cause problems," from the raw material conditions, lead to cough technical term, according to the meeting minutes G's last meeting.
RAW - G members spent two years to promote changing oxygen schedule - amount of oxygen pump into the pilot's life support system - but never through the necessary software upgrades.
"Cost is considered to be a forbidding place other project, people hope that funded F - 22," Kevin divers said, a group of the United States air force former physiologist who lead the RAW - G, until in 2007 he left the dissolution of service.
Divers think,, original cost about $100000, each plane.
In the low altitude area, and most recently the ensuing in high altitude area anoxic event the link between blood oxygen saturation is still a matter of preference, and other factors are possible. However, air force and NASA, now agree that F - 22 oxygen table need to modify.
In a house subcommittee heard this month, Clinton g rugg, in chief engineer for NASA's engineering and safety center, says in the current schedule provide too much oxygen in low altitude RAW - - ? warning - and also agreed to RAW - ?, test is not enough "even returned to




Other News:
AP IMPACT: Air Force insiders foresaw F-22 woes
You don’t need a weatherman to know Mitt Romney’s losing in Ohio
Egypt newspaper fights cartoons with cartoons
Air Force mystery plane set for next mission
SKorea: Japan must educate people on colonial past
US to reinstate New Zealand military ship visits
UC Davis in $1M Pepper Spray Settlement
Ex-top cop in China scandal gets verdict Monday