Curtiss Twin JN

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 centre 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.

One aircraft was evaluated by the United States Navy as a twin-float seaplane.

Specifications

Crew

Two

Length

29 ft 0 in (8.83 m)

Wingspan

52 ft 9.38 in (16.08 m)

Height

10 ft 8.38 in (3.26 m)

Wing area

450.3 sq ft (41.83 m²)

Empty weight

2,030 lb (921 kg)

Gross weight

3,110 lb (1,411 kg)

Powerplant

2 × Curtiss OXX-2 water-cooled V-8 water-cooled aircraft piston engine’s,

90 hp (67 kW) each

Performance

Maximum speed

80 mph (129 km/h, 70 kn)

Service ceiling

11,000 ft (3,350 m).