Saturday, January 10, 2009

The Grumman F-14 Tomcat is a supersonic


The Grumman F-14 Tomcat is a supersonic, twin-engine, two-seat, variable geometry wing aircraft. The F-14 was the United States Navy's primary maritime air superiority fighter, fleet defense interceptor and tactical reconnaissance platform from 1974 to 2006. It later performed precision strike missions once it was integrated with the Low Altitude Navigation and Targeting Infrared for Night LANTIRN system. The F-14 was developed after the collapse of the F-111B project, and was the first of the American teen-series fighters which were designed incorporating the experience of air combat in Vietnam against MiGs.
Development
Main article: History of the F-14 TomcatThe 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 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 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.
Improvements and changes
Firing trials involved the launch against simulated targets of every type, from cruise missiles to high flying bombers. The first AIM-54 Phoenix launch by a Tomcat occurred on 28 April 1972. In November of that year, a single launch was achieved against an incoming target at over 200 km, this being outside the normal range for the Tomcat weapon system of 166 km. Another unusual test was made in 22 November 1973, with six missiles fired in 38 seconds, at Mach 0.78 and 24,800 ft (7600 m), with four scoring direct hits. This missile entered service at the beginning of 1975, just as the Vietnam War was coming to an end.With time, the early versions of all the missiles were replaced by more advanced versions, especially with the move to full solid-state electronics that allowed better reliability, better ECCM and more space for the rocket engine. So the early arrangement of the AIM-54A Phoenix active-radar air-to-air missile, the AIM-7E-2 Sparrow Semi-active radar homing air-to-air missile, and the AIM-9J Sidewinder heat-seeking air-to-air missile was replaced in the 1980s with the B (1983) and C (1986) version of the Phoenix, the F (1977), M (1982), P (1987 or later) for Sparrows, and with the Sidewinder, L (1979) and M (1982). Within these versions there are several improved batches (for example, Phoenix AIM-54C++).Improvements and changesFiring trials involved the launch against simulated targets of every type, from cruise missiles to high flying bombers. The first AIM-54 Phoenix launch by a Tomcat occurred on 28 April 1972. In November of that year, a single launch was achieved against an incoming target at over 200 km, this being outside the normal range for the Tomcat weapon system of 166 km. Another unusual test was made in 22 November 1973, with six missiles fired in 38 seconds, at Mach 0.78 and 24,800 ft (7600 m), with four scoring direct hits. This missile entered service at the beginning of 1975, just as the Vietnam War was coming to an end.With time, the early versions of all the missiles were replaced by more advanced versions, especially with the move to full solid-state electronics that allowed better reliability, better ECCM and more space for the rocket engine. So the early arrangement of the AIM-54A Phoenix active-radar air-to-air missile, the AIM-7E-2 Sparrow Semi-active radar homing air-to-air missile, and the AIM-9J Sidewinder heat-seeking air-to-air missile was replaced in the 1980s with the B (1983) and C (1986) version of the Phoenix, the F (1977), M (1982), P (1987 or later) for Sparrows, and with the Sidewinder, L (1979) and M (1982). Within these versions there are several improved batches (for example, Phoenix AIM-54C++).

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