Tell us the reasons why F-22 production was halted.

I scratched the surface & I got the following:

1. cost:  around 340 mil per aircraft

2. maintenance: In July 2009, the Air Force reported that the F-22 requires more than 30 hours of maintenance for every flight hour, with the total cost per flight hour of $44,000.  Quoted from Smith, R. Jeffrey. "Premier U.S. Fighter Jet Has Major Shortcomings: F-22's Maintenance Demands Growing."  The F-22 also reportedly encounted a critical failure every 1.7 hours.  Each Raptor requires a month long packaged maintenance plan (PMP) after every 300 flight hours.

3. Rain: rain has caused "shorts and failures in sophisticated electrical components" when the Raptors were briefly posted to Guam.  Quoted from Holmes, Erik. "F-22 problems linked to rain in Guam."

4. The F-22 is made out of materials that present significant health risks when handled and USAF technicians require eye protection, respirators and thick, industrial gloves to work with these materials.

5. On 9 July 2009, General James Cartwright, Vice Chairman of the Joint Chiefs of Staff, explained to the U.S. Senate Committee on Armed Services his reasons for supporting termination of the F-22 production line. He believes, most importantly, that fifth-generation fighters need to be proliferated to all three services, a need that could only be met by shifting more resources to producing the 10-years more advanced, multi-service and multirole F-35. He further noted that one of the highest issues of concern of the combatant commanders was the ability to conduct electronic warfare (EW). Currently, the U.S. armed forces share only a single airborne EW platform, the EA-6B Prowler, which is being retired and partially replaced with the EA-18G Growler. Gen. Cartwright believes that keeping the F/A-18 production line "hot" offers the dual benefits of providing a fallback option should problems arise with the F-35 program, as well as leaving an option to purchase further Growlers, since the U.S. Navy currently plans to buy only enough for its own needs with no additional EW aircraft to support joint operations.

Now.  Please dig in & reveal the real causes of F-22 production line shut down. 

 

所有跟帖： 

• 你说的所有的东西都是一段的开始。 如果你读完你说的每一点后面都有解释。 -scim- ♂ (75 bytes) () 01/12/2011 postreply 10:15:47

• Unfortunately I can't find any solution to those problems -Giantfan- ♂ (35 bytes) () 01/12/2011 postreply 10:19:31