Pitcairn PCA-02 Autogyro

1st Flight 1918

 The Pitcairn PCA-2 was an autogyro developed in the United States in the early 1930s.

It was Harold F. Pitcairn’s first autogyro design to sell in quantity.

It had a conventional design for its day, an airplane-like fuselage with two open cockpits in tandem, and an engine mounted tractor-fashion in the nose.

The lift by the four-blade main rotor was augmented by stubby, low-set monoplane wings that also carried the control surfaces.

The wingtips featured considerable dihedral that acted as winglets for added stability.

Variants

PCA-2 – major production version

PCA-3 – version with Pratt & Whitney Wasp Junior engine and 48-ft (14.63-m) rotor (1 built)

PA-21 – version with Wright R-975-E2 engine

OP-1 – Reconnaissance autogyro (1931); two aircraft acquired by the United States Navy (USN) in 1931 for trials, with limited success.

Specifications

Crew: One pilot

Capacity: 2 passengers

Length: 23 ft 1 in (7.04 m)

Wingspan: 30 ft 0 in (9.14 m)

Airfoil: NACA M-3 mod

Empty weight: 2,233 lb (1,013 kg)

Gross weight: 3,000 lb (1,361 kg)

Powerplant: 1 × Wright R-975 (J6-9) 9-cylinder air-cooled radial piston engine, 330 hp (250 kW)

Main rotor diameter: 45 ft 0 in (13.72 m)

Main rotor area: 1,580 sq ft (147 m2) 4-bladed wire braced rotor

Propellers: 2-bladed fixed pitch wooden propeller

Performance

Maximum speed: 120 mph (190 km/h, 100 kn)

Range: 290 mi (470 km, 250 nmi)

Service ceiling: 15,010 ft (4,575 m)

Maximum glide ratio: 4.8.

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