North American NA-212 / F-107
A derivative of the Super Sabre and originally designated the YF-100B, the North American F-107, or company NA-212, was an all-weather fighter-bomber version of the F-100 powered by a 10660kg thrust Pratt & Whitney YJ75-P-9 turbojet. A large dorsal arrangement with bifurcated inlets inlet was above and behind the cockpit, so positioned to create space in the nose for radar.
Design work began in June 1953 and a year later the USAF ordered nine aircraft (55-5118/5126), although only three were actually completed. In 1955, the F-107 lost out to the Republic F-105 in a paper competition even though it had not yet flown and its competitor did not, then, have all-weather capability. Thus, the future of the F-107 was already clouded on 10 September 1956 when Robert Baker made the first flight at Edwards AFB, California, in the first of three service-test YF-107As.
The YF-107A was relatively trouble free but despite good performance, the three YF-107As were soon relegated to permanent test status. Features of the aircraft warranting further evaluation included a flush centre-line fuel tank mounted in the indented fuselage bottom, spoilers on the wing surface instead of ailerons, and a one-piece all-moving rudder, later adopted on the A-5 Vigilante attack bomber.
The first YF-107A eventually found itself in a scrap heap, the second is now on display at the Air Force Museum in Dayton, Ohio, and the third was lost in a crash landing while on loan to NACA. F-107 (Tail number 55-5118) was on display at Pima Air and Space Museum in Tucson.
Engine: 1 x Pratt & Whitney J-75-P-9, 24,500-lb (11,115-kg)
Max take-off weight: 22204 kg / 48952 lb
Empty weight: 16852 kg / 37152 lb
Wingspan: 11.2 m / 36 ft 9 in
Length: 18.5 m / 60 ft 8 in
Height: 6.0 m / 19 ft 8 in
Wing area: 39.7 sq.m / 427.33 sq ft
Max. speed: 2200 km/h / 1367 mph
Range: 1900 km / 1181 miles
Armament: 4 x 20mm cannons, 4540kg of weapons
North American YF-107 Ultra Sabre