General characteristics Crew: 1 Length: 43 ft 8 in (13.32 m) tail up Wingspan: 48 ft (15 m) Width: 20 ft 5 in (6.22 m) wings folded Height: 15 ft 3 in (4.65 m) wings spread; 17 ft (5.2 m) wings folded Wing area: 400 sq ft (37 m2) Empty weight: 12,648 lb (5,737 kg) Gross weight: 16,630 lb (7,543 kg) Max takeoff weight: 18,698 lb (8,481 kg) maximum overload Powerplant: 1 × Pratt & Whitney R-2800-34W Double Wasp 18-cyl. air-cooled radial piston engine, 2,100 hp (1,600 kW) Powerplant: 1 × Allis-Chalmers J36 centrifugal flow turbojet, 2,700 lbf (12 kN) thrust Propellers: 4-bladed Hamilton Standard constant-speed fully feathering propeller, 13 ft 1 in (3.99 m) diameterPerformance Maximum speed: 469 mph (755 km/h, 408 kn) both engines at 25,300 ft (7,700 m) Range: 1,385 mi (2,229 km, 1,204 nmi) Service ceiling: 41,800 ft (12,700 m) Rate of climb: 5,020 ft/min (25.5 m/s)Armament Guns: 4x wing-mounted 20 mm (.79 in) cannon[code]