North American O-47

1st Flight 1935

The North American O-47 is an American observation fixed-wing aircraft monoplane used by the United States Army Air Corps.

It had a low-wing configuration, retractable landing gear, and a three-blade propeller.

Variants

XO-47

one built, serial number 36-145 in Dundalk, Maryland, 850 hp (634 kW) Wright R-1820-41 engine

O-47A

164 built in Inglewood California, Wright R-1820-49 engine

O-47B

74 built, minor improvements and a 1,060 hp (790 kW) Wright R-1820-57 engine installed, plus an extra 50 gallon fuel tank

Specifications

Crew: three (pilot, co-pilot-observer, gunner)

Length: 33 ft 7 in (10.24 m)

Wingspan: 46 ft 4 in (14.1 m)

Height: 12 ft 2 in (3.7 m)

Wing area: 350 sq ft (32.5 m2)

Empty weight: 5,980 lb (2,712.5 kg)

Gross weight: 7,636 lb (3,463.6 kg)

Powerplant: 1 × Wright R-1820-49 radial, 975 hp (727 kW)

Performance

Maximum speed: 221 mph (355.7 km/h, 192 kn)

Cruise speed: 200 mph (322 km/h, 170 kn)

Range: 840 mi (1,352 km, 730 nmi)

Service ceiling: 23,200 ft (7,071 m)

Rate of climb: 1,470.8 ft/min (7.47 m/s)

Armament

1 × fixed forward-firing .30-cal (7.62 mm) machine gun (200 rounds) in starboard wing

1 × flexible .30-cal (7.62 mm) machine gun (600 rounds) in rear cockpit.

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