In early 1940 the U.S. Navy advised manufacturers of a requirement for two-seat primary trainer of biplane configuration. A proposal from the Spartan Aircraft Company, based on the company's 1927 open-cockpit biplane, was selected by the U.S. Navy. A contract for one prototype (XNP-1) and 200 later production aircraft was awarded. It was the first military aircraft to be produced by Spartan. The NP-1 was used to equip the newly established U.S. Naval Reserve primary flying training schools in Atlanta, Dallas, and New Orleans, where they continued to serve for many years.
Spartan NP-1
Type: primary trainer Crew: 2 Armament: none Specifications: Length: 24' 2.75" (7.39 m) Height: 8' 4" (2.54 m) Wingspan: 33' 8.5" (10.27 m) Wing area: 301.3 sq. ft (27.99 sq. m) Empty Weight: 2069 lb (938 kg) Max Weight: 2775 lb (1259 kg) max at takeoff Propulsion: No. of Engines: 1 Powerplant: Lycoming R-680-8 radial Horsepower: 220 hp Performance: Range: 315 miles (507 km) Cruise Speed: 90 mph ( 145 km/h) Max Speed: 108 mph ( 174 km/h) Ceiling: 13,200 ft (4025 m)
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