page_title: General Dynamics F-111 Aardvark
section_title: FB-111A / F-111G
hierarchical_section_title: General Dynamics F-111 Aardvark / Variants / FB-111A / F-111G
caption_attribution_description: English: Exhibit in the National Electronics Museum, 1745 West Nursery Road, Linthicum, Maryland, USA. All items in this museum are unclassified. The museum permitted photography without restriction.
context_page_description: The General Dynamics F-111 Aardvark is a retired American supersonic, medium-range interdictor and tactical attack aircraft that also filled the roles of strategic nuclear bomber, aerial reconnaissance, and electronic-warfare aircraft in its various versions. The word "aardvark" is Afrikaans for "earthpig" and reflects the look of the long nose of the aircraft that might remind one of the nose of the aardvark. Developed in the 1960s by General Dynamics, it entered service in 1967 with the United States Air Force. The Royal Australian Air Force also ordered the type and began operating F-111Cs in 1973.
  The F-111 pioneered several technologies for production aircraft, including variable-sweep wings, afterburning turbofan engines, and automated terrain-following radar for low-level, high-speed flight. Its design influenced later variable-sweep wing aircraft, and some of its advanced features have since become commonplace. The F-111 suffered a variety of problems during initial development. Several of its intended roles, such as an aircraft carrier-based naval interceptor with the F-111B, failed to materialize.
context_section_description: The FB-111A was a strategic bomber version of the F-111 for the USAF Strategic Air Command. With Air Force's Advanced Manned Strategic Aircraft program proceeding slowly, and concerns of fatigue failures in the B-52 fleet, the service needed an interim bomber quickly. The FB-111A was selected in 1965 to replace the supersonic Convair B-58 Hustler and early B-52 variants. The Air Force signed a contract for the FB-111A in 1966. In 1968, plans called for 263 FB-111s, but the total was reduced to 76 in 1969. The first production aircraft flew in 1968. Deliveries began in 1969 and ended in 1971.
  When the UK canceled its order for the F-111K in 1968, components for the 48 F-111Ks in manufacturing were diverted to FB-111A production. The FB-111A featured longer F-111B wings for greater range and load-carrying ability. The bomber variant had a redesigned aft fuselage and its maximum speed was limited to Mach 2. Its fuel capacity was increased by 585 gallons (2,214 L) and it used stronger landing gear to compensate for the higher maximum takeoff weight of 119,250 lb (54,105 kg). All but the first aircraft had the Triple Plow II intakes and the TF30-P-7 with 12,500 lbf (56 kN) dry and 20,350 lbf (90 kN) afterburning thrust.
  The FB-111A had new electronics, known as the SAC Mark IIB avionics suite. For the FB-111A the system used an attack radar improved from the F-111A's system, along with components that would be used later on the F-111D, including the inertial navigation system, digital computers, and multi-function displays. The SAC Mark IIB kit included custom items added to support the strategic mission, such as a star tracker navigation system mounted forward of the cockpit, a satellite communications receiver, and an automatic stores release system, replacing the manual stores release system used on other F-111 variants. Armament for the strategic bombing role was the Boeing AGM-69 SRAM (short-range attack missile); two could be carried in the internal weapons bay and four more on the inner underwing pylons. Nuclear gravity bombs were also typical FB armament. Fuel tanks were often carried on the third non-swivelling pylon of each wing. The FB-111A had a total weapon load of 35,500 lb (16,100 kg).
  Multiple advanced FB-111 strategic bomber designs were proposed by General Dynamics in the 1970s. The first design, referred to as "FB-111G" within the company, was a larger aircraft with more powerful engines with more payload and range. The next was a lengthened "FB-111H" that featured more powerful General Electric F101 turbofan engines, a 12 ft 8.5 in longer fuselage and redesigned fixed intakes. The rear landing gear were moved outward so armament could be carried on the fuselage there. The FB-111H was offered as an alternative to the B-1A in 1975. The similar FB-111B/C was offered in 1979 without success.
  The FB-111A became surplus to SAC's needs after the introduction of the B-1B Lancer. The remaining FB-111s were subsequently reconfigured for tactical use and redesignated F-111G. The conversions began in 1989 and ended after 34 F-111G conversions were completed. With the disestablishment of SAC, the FB-111As and F-111Gs were transferred to the newly established Air Combat Command (ACC). They were used primarily for training. The remaining FB-111As were retired in 1991 and the F-111Gs were retired in 1993. Australia bought 15 F-111Gs in 1993 to supplement its F-111Cs. They were retired in 2007.
caption: Electronically Agile Radar (PESA, precursor of the AN/APQ-164 for B-1 Lancer), specifically designed for the FB-111
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