Grumman XF5F-1 / XP-50 Skyrocket

 

1st Flight 1940

XF5F

The Grumman XF5F Skyrocket was a prototype twin-engine shipboard fighter interceptor.

The United States Navy ordered one prototype, model number G-34, from Grumman Aircraft Engineering Corporation on 30 June 1938; its designation was XF5F-1.

The aircraft had a unique appearance:

The forward “nose” of the fuselage did not extend forward of the wing.

Provisions were included for two 20 mm (0.906 in) Madsen cannon as armament.

Only one was built.

XP-50

The Grumman XP-50 was a land-based development of the shipboard XF5F-1 Skyrocket fighter, entered into a United States Army Air Corps  contest for a twin-engine heavy interceptor aircraft.

The USAAC placed an order for a prototype on 25 November 1939, designating it XP-50, but it lost the competition to the Lockheed XP-49.

Specifications

Crew: 1

Length: 28 ft 9 in (8.76 m)

Wingspan: 42 ft 0 in (12.80 m)

Height: 11 ft 4 in (3.45 m)

Wing area: 303.5 sq ft (28.2 m2)

Empty weight: 8,107 lb (3,600 kg)

Gross weight: 10,138 lb (4,600 kg)

Max take-off weight: 10,900 lb (4,955 kg)

Powerplant: 2 × Wright XR-1820-40/42 Cyclone nine cylinder radial air-cooled engine, 1,200 hp (895 kW) each

Performance

Maximum speed: 383 mph (616 km/h, 333 kn) at sea level

Range: 1,200 mi (1,800 km, 1,000 nmi)

Service ceiling: 33,000 ft (11,000 m)

Rate of climb: 4,000 ft/min (20 m/s)

Wing loading: 33.4 lb/sq ft (163 kg/m2)

Power/mass: .23hp/lb

Armament

4 × 0.5 in (12.7 mm) machine guns

2 × 165 lb (75 kg) bombs.

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