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Panetta approves plan to lift f-22 limits - Oxygen Jet Machine Manufacturer - IPL Beauty Machine Ma by qrt etget
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Panetta approves plan to lift f-22 limits - Oxygen Jet Machine Manufacturer - IPL Beauty Machine Ma by QRT ETGET
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| Article Posted: 01/14/2013 |
| Article Views: 78 |
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Panetta approves plan to lift f-22 limits - Oxygen Jet Machine Manufacturer - IPL Beauty Machine Ma |
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Business,Business News,Business Opportunities
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Defense Secretary Leon Panetta has approved an Air Force plan tobegin lifting flight restrictions on the F-22 stealth fighter jet,following the ongoing correction of oxygen deficit problems thatgrounded and restricted the fleet for months. Pentagon press secretary George Little said Tuesday that thePentagon has "very high confidence that we've identified the issue"with the mysterious oxygen depletion problem that caused some F-22pilots to feel dizzy and experience other symptoms of hypoxia. TheAir Force now believes that a key problem was a valve in thepilots' pressure vest that caused it to inflate and remaininflated, triggering breathing problems. In mid-May, Panetta ordered that F-22 flights remain "withinproximity of potential landing locations" so pilots could landquickly if they experienced a lack of oxygen.
As of Tuesday, after a briefing from Air Forces leaders on Friday,Panetta has given the Air Force the green light to begin easing therestrictions, as changes are made to the fighter's oxygen system.The Air Force is replacing the valve and increasing the volume ofair flowing to the pilots by removing a filter that was installedto check for contaminants in the system. Little said Panetta also authorized the deployment of a squadron ofF-22s to Kadena Air Base in Japan. He said that the jets will flyto the base under altitude restrictions, but after that the AirForce will begin resuming most longer-duration flights. Theprecautions for the Japan flight, said Little, are part of themeasured approach the Air Force is taking to gradually return tonormal flights.
Over time, the Air Force also plans to install a new backupemergency oxygen system, add sensors and put in an improved pilotoxygen center. Once the changes are complete, the Air Force will seek approval toremove the flight restrictions that limit it from flying at highaltitudes. "The secretary believes that pilot safety is paramount. The graduallifting of restrictions will enable the Air Force to resume normalF-22 operations over time, while ensuring the safety of theincredible airmen who fly this critical aircraft," said Little.
Little said he does not know the exact timeline for the return tonormal operations. He noted that the flights to Japan will be atlower altitudes so that the vests would not have to be used. Gen. Norton Schwartz, Air Force Chief of Staff, told Pentagonreporters that extensive testing has concluded that the problem wasthe amount of oxygen the pilots were getting, not the quality ofthe oxygen.
And he said that the Air Force will modify and test themodified equipment "under the most demanding conditions," over thecoming months and then will go back to Panetta for final approvalto lift the flight restrictions. The problem came to light when pilots complained publicly about theoxygen depletion, prompting Panetta to order the flight limits. The F-22, manufactured by Lockheed Martin Corp., is the Air Force'smost-prized stealth fighter. It was built to evade radar and iscapable of flying at faster-than-sound speeds without usingafterburners.
Asked why the problem was not discovered during its lengthy testingand development, Schwartz acknowledged, "we missed some things,bottom line." He said that the early testing did not reveal the shortcomings, andnoted that some physiology and engineering expertise in the AirForce has diminished over the years. So, Schwartz said the lesson is that the Air Force needs to paybetter attention to the "man-machine interface" of its aircraft.
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