Friday, October 2, 2009

F/A-22 Raptor


The ATF (Advanced Technology Fighter) programme began in September 1983, when design contracts were awarded to seven companies; in October 1986, development contracts were awarded to two consortia, one consisting of Lockheed (prime contractor), Boeing, and General Dynamics, the other of Northrop (prime contractor) and McDonnell Douglas. The first Northrop/MD YF-23A (unofficially "Black Widow II") flew on 27 August 1990, followed by the first Lockheed/Boeing/GD YF-22A (unofficially "Lightning II") on 29 September 1990. In April 1991, the YF-22A was selected for development and The F/A-22 is destined to replace the F-15 and become the next-generation fighter of the USAF. Together with the competing F-23 it is one of the first fighter designs optimised for stealth. In addition, it was designed to "supercruise", i.e. fly at supersonic speeds without afterburner. The F/A-22 has a relatively conventional appearance, with twin tails and flat fuselage sides. The engines have two-dimensional thrust vectoring nozzles. To conserve a low radar cross-section, the armament is carried in internal weapons bays. First operational F-22 made it's debut in December 2005. Plans for a naval version, intended to replace the F-14, with extensive changes to make the aircraft suitable for carrier use, have been shelved. service.

Recent budget cuts have slowed down the schedule slightly; the first flight of the production Lockheed/Boeing F-22A (General Dynamics sold its fighter division to Lockheed in December 1992), originally scheduled for June 1996, will now be in September 1997. Service entry is expected to begin in 2005; the USAF is currently fighting an attempt by the General Accounting Office to delay this to 2010. Total production, originally planned to be 648 aircraft, has now been reduced to 339.

Reports differed as to whether the aircraft had an official name yet; for a while the Pentagon was considering "Superstar", and some magazine reports have claimed that the name "Rapier" has been assigned. However, Chris Ridlon of USAF ROTC/Academy reports that all the USAF people he knows (including F-22 acquisition officers) are using Lockheed's name of "Lightning II", so that may be officially approved after all. We now know it's Raptor...

Vital statistics (YF-22A): length 18.90 m, span 13.56 m, empty weight 15422 kg, max weight 28123 kg, max speed 2655 km/h (Mach 2.5), ferry range 3704 km; power plant: two 155.68 kN Pratt & Whitney F119-100 augmented turbofans; armament: 20mm cannon, internal bays for two AIM-9 and four AIM-120A or six AIM-120C air-to-air missiles, or two AIM-9, two AIM-120, and two air-to-surface missiles, external hardpoints for four more AIM-120s or other ordnance; radar: Westinghouse/Texas Instruments APG-77.


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