Wednesday, April 1, 2009

f14




Development
Main article: History of the F-14 Tomcat
The F-14 Tomcat program was initiated when it became obvious that the weight and maneuverability issues plaguing the U.S. Navy variant of the Tactical Fighter Experimental (TFX) (F-111B) would not be resolved to the Navy's satisfaction. The Navy requirement was for a fleet air defense fighter (FADF) with the primary role of intercepting Soviet bombers before they could launch missiles against the carrier battle group. The Navy also wanted the aircraft to possess inherent air superiority characteristics. The Navy strenuously opposed the TFX, which incorporated the Air Force's requirements for a low-level attack aircraft, fearing the compromises would cripple the aircraft, but were forced to participate in the program at direction of then Secretary of Defense Robert McNamara who wanted "joint" solutions to the service aircraft needs to reduce developmental costs. The prior example of the F-4 Phantom II which was a Navy and Marine Corps program later adopted by the Air Force (under similar direction) was the order of the day. Vice Admiral Thomas Connolly, DCNO for Air Warfare took the developmental F-111A variant for a flight and discovered it had difficulty going supersonic and had poor landing characteristics. He later testified to Congress about his concerns against the official Department of the Navy position and in May 1968, Congress killed funding for the F-111B allowing the Navy to pursue an answer tailored to their requirements.

The Naval Air Systems Command (NAVAIR) shortly issued an RFP for the Naval Fighter Experimental (VFX), a tandem two-seat fighter with maximum speed of Mach 2.2 and a secondary close air support role. Of the five companies that submitted bids (four of which incorporated variable-geometry wings as on the F-111), McDonnell Douglas and Grumman were selected as finalists in December 1968, and Grumman won the contract in January 1969. Grumman had been a partner on the F-111B, and had started work on an alternative when they saw the project deteriorating, and so had an edge on its competitors. Their early design mock-ups and cost projections were discussed with Naval authorities as an alternative to the F-111B.[3]

The winning Grumman design reused the TF30 engines from the F-111B, though the Navy planned on replacing them with the F401-PW-400 engines then under development by Pratt and Whitney for the Navy (in parallel with the related F100 for the USAF).[4] Though lighter than the F-111B, it was still the largest and heaviest U.S. fighter to ever fly from an aircraft carrier, its size a consequence of the requirement to carry the large AWG-9 radar and AIM-54 Phoenix missiles, also from the F-111B and an internal fuel load of 16,000 lbs (7,300 kg). The F-14 would also share a similar inlet duct, wing, and landing gear geometry with Grumman's A-6 Intruder.[5]

Upon being granted the contract for the F-14, Grumman greatly expanded its Calverton, Long Island, New York facility to test and evaluate the new swing-wing interceptor. Much of the testing was in the air of the Long Island Sound as well as the first few in-flight mishaps, including the first of many compressor stalls and ejections. In order to save time and forestall interference from Secretary McNamara, the Navy skipped the prototype phase and jumped directly to full-scale development; the Air Force took a similar approach with its F-15.[6]

The F-14 first flew on 21 December 1970, just 22 months after Grumman was awarded the contract, and reached Initial Operational Capability (IOC) in 1973. The United States Marine Corps was initially interested in the F-14 as an F-4 Phantom II replacement and went so far as to send pilots and radar intercept officers to Fighter Squadron One Twenty-Four (VF-124), the Pacific Fleet Replacement Squadron for the F-14, to train as instructors. The Marine Corps was never fully sold on the aircraft and pulled out when the stores management system for ground attack munitions was left undeveloped, leaving the aircraft incapable of dropping air-to-ground munitions. These were not developed until the 1990s.[6]



It entered service in 1974 with the U.S. Navy, replacing the F-4 Phantom II. It was later exported to the former Imperial Iranian Air Force in 1976, during a time when the US still had good relations with Iran. It was retired from the active U.S. Navy fleet on 22 September 2006, having been replaced by the F/A-18E/F Super Hornet.[2] As of 2008, it remains in service only with the Islamic Republic of Iran Air Force.

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