关于F22 维修的问题。
Maintenance
In January 2007, it was reported that the F-22 maintained a 97% sortie rate (flying 102 out of 105 tasked sorties). -- 不错。
Lt. Col. Wade Tolliver, the squadron commander of the 27th FS from Langley AFB commented on the upkeep and reliability of the Raptor's RAM during simulated combat conditions, stating "the stealth coatings are not as fragile as they were in earlier stealth aircraft. It isn't damaged by a rain storm and it can stand the wear and tear of combat without degradation." -- 这句话充分说明，以前的隐形机如B2，F117，一场暴雨都能导致其隐形涂层脱落。。。 F22 还好点， 不过也强的有限。
However, the Washington Post reported the aircraft skin is vulnerable to rain and abrasion, which partly accounts for the average flight time of 1.7 hours before critical failure.
-- 如果在雨中飞1。7个小时，那么飞机的隐形土层就会受到致命伤害。
In July 2009, the Air Force reported that the F-22 requires more than 30 hours of maintenance for every flight hour, at a cost of $44,000. The Office of the Secretary of Defense puts that figure at 34 hours of maintenance per single hour of flight at a cost of $49,808 per hour of flight.
http://www.washingtonpost.com/wp ... 09070903020_pf.html
--我前面说过，每飞1小时， F22就要维护30小时还是少的， 事实上国防部说的是34小时。。。
The aircraft's radar-absorbing metallic skin is the principal cause of its maintenance troubles, with skin repairs accounting for more than half of the maintenance。 Another source of maintenance problems is that many components require custom hand-fitting and are not interchangeable. The canopy visibility has declined more rapidly than expected, with refurbishments at 331 flight hours, on average, instead of the required 800 hours. Pentagon officials respond that measuring hourly flying costs for aircraft fleets that have not reached 100,000 flying hours is premature. They say improvements have been made since 2008, and the F-22s are on track to meet key performance parameters by 2010。
Air Force Magazine reported that the Washington Post article's 55% capable rate was incorrect and that mission capable rates have been climbing, and by late June stood at 62.9%. And the Air Force Association states that the current mission capable rate is 70%
就是这么维护和保养，空军也承认，现在能飞的F22 不过全部的70%而已。
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本帖最后由 oskarlre 于 2009-7-24 21:20 编辑 ]
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