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Curtiss Twin JN / JN-5 / Model 1B
The Curtiss Twin JN (retrospectively called the Model 1B and also known as the JN-5) was an Experimental aircraft built by the Curtiss Aeroplane and Motor Company for the United States Army Air Service. It was a biplane, designed for observation missions.
Based on the successful Curtiss JN-4, the Twin JN used the same wing structure, but the wingspan was extended by enlarging the center section. Lateral control was achieved with the tail of a Curtiss R-4. The Twin JN was powered by a pair of 90 hp (67 kW) Curtiss OXX-2 engines located between the wings.
Eight were built in 1916, and one aircraft was evaluated by the United States Navy as a twin-float seaplane.
Engines: 2 × Curtiss OXX-2 water-cooled V-8, 90 hp (67 kW) each
Wingspan: 52 ft 9⅜ in (16.08 m)
Wing area: 450.3 ft2 (41.83 m2)
Length: 29 ft 0 in (8.83 m)
Height: 10 ft 8⅜ in (3.26 m)
Empty weight: 2,030 lb (921 kg)
Gross weight: 3,110 lb (1,411 kg)
Maximum speed: 80 mph (129 km/h)
Service ceiling: 11,000 ft (3,350 m)
Crew: two

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