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Naval Aircraft Factory / NAF TF
The origins of the TF (Tandem Fighter) can be traced to a 1918 requirement issued by the British Technical Committee for a long-range sea-borne fighter to escort patrol aircraft (H-16s, F-5s, etc) on maritime sorties. After the armistice, Navy officials retained sufficient interest in the idea to authorise NAF to proceed with design proposals. After reviewing various options, the Navy approved a twin-tandem engine design that incorporated a hull and tailplane arrangement nearly identical to the larger NC series and authorised construction of four prototypes. Originally, the TF was to have been powered by Curtiss-built 400 hp Kirkham engines, however mechanical problems with the Kirkham engines led to the decision to substitute the less powerful Wright-Hispanos.
Construction of the first prototype commenced in August 1919 and the first flight took place on 1 October 1920. Testing revealed poor handling characteristics plus a marked tendency of the engines to overheat at high RPM settings.
Although three more prototypes were completed and tested during 1921 and 1922, results were still rated as unsatisfactory, and the program was formally cancelled in January 1923.
The fourth prototype was reportedly completed with 400 hp Packhard I-A V-12 engines.
3 place Navy escort fighter
Engine: 2 x Wright-Hispano H-3, 300 hp
Prop: 4 blade wood fixed pitch
Wing span upper: 60 ft 0 in
Length: 44 ft 0 in
Wing area: 930 sq.ft
Empty weight: 5575 lb
Loaded weight: 8846 lb
Max speed: 95 mph
Cruise: 72 mph
Ceiling: 13,000 ft
Range: 650 mi
Armament: 2 x flexible Lewis .50in mg in bow, 1 x flexible Lewis .30in mg in rear cockpit
Number built: 4

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