Fighters For The Missile Era
F-111, F-14
Page 12
Senator John L. McClellan directed a widely publicized critical probe of the situation, but F-111 procurement went ahead. Twenty-three developmental aircraft were ordered December 21, 1962, from General Dynamics, with Grumman as the subcontractor for the Navy’s F-111B version.
The first F-111A flew at Fort Worth on December 21, 1964, the second on February 25, 1965, and on April 12 a letter contract was announced for 431 aircraft. The first 18 preproduction aircraft had no gun provisions and TF30-P-l engines that suffered numerous compressor stalls. A production F-111A first flew on February 12, 1967, but not until September 24 was the TF30-P-3 flown on the 31st production F-111A.
The Navy’s F-111B carried two Phoenix (AIM-54A) missiles in the weapons bay and four more under the wings, with the Hughes AWG-9 fire control whose radome nose folded upwards for stowage. A pair of 450-gallon tanks or other weapons stores could be carried on the six under wing pylons, and the wings were lengthened for improved range and loiter performance. A probe could be extended for drogue inflight refueling.
Ordered with the F-111A on December 21, 1962, the first of five Grumman-built preproduction F-111Bs flew May 18, 1965, with TF30-P-l engines, and the last flew on November 16, 1966. Weight had grown from 38,804 pounds empty and 62,788 pounds gross on the 1962 contract to 46,000 pounds empty and 77,566 pounds gross in 1965, degrading performance.
A production contract signed May 10, 1967, included 24 F-111Bs with 12,290-pound thrust TF30-P-12 engines, but this plan was to be frustrated. Range was greatly reduced, and engine stalls were a persistent problem. Desperate measures to reduce weight on succeeding prototypes brought little improvement, and Grumman itself advocated a new fighter design, the strictly Navy future F-14.
The first production F-111B with JF-30-P-12s and new intakes was accepted June 30, 1968, but a stop-work order was issued July 10, 1968, and formal contract termination agreed on December 10. On February 28, 1969, the second and last F-111B was accepted. Over $377 million had failed to produce a carrier fighter, although the swing-wing and the missile system would carry over to the successful F-14.
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