Lockheed R6V Constitution

The Lockheed R6V Constitution was a large, propeller-driven, double-decker transport aircraft developed in the 1940s by Lockheed as a long-range, high-capacity transport.

Only two of the aircraft were ever built, both prototypes.

Although these two planes went into service with the Navy, the Constitution design ultimately proved underpowered and too large for practical airline use at the time.

Although the Martin JRM Mars flying boat had a slightly longer wingspan, the Constitution remains the largest fixed-wing aircraft type ever operated by the U.S. Navy.

Specifications

Crew

12

Capacity

168 passengers

Length

156 ft 1 in (47.6 m)

Wingspan

189 ft 1 in (57.6 m)

Height

50 ft 4.5 in (15.4 m)

Wing area

3,610 sq ft (335.4 m2)

Empty weight

113,780 lb (51,610 kg)

Gross weight

160,000 lb (72,600 kg)

Max take-off weight

184,000 lb (83,460 kg)

Powerplant

4 × Pratt & Whitney R-4360-22W radial engine, 3,000 hp (2,240 kW) each

Performance

Maximum speed

303 mph (490 km/h, 263 kn) at 25,000 ft (7,600 m)

Cruise speed

260 mph (418 km/h, 230 kn)

Range

5,390 mi (8,670 km, 4,680 nmi)

Service ceiling

28,600 ft (8,700 m)

Rate of climb

700 ft/min (3.6 m/s).

 

 

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