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Lockheed Howard 250 Tri-Gear 2019-07-03T14:54:17-05:00

Project Description

MPH

266

WEAPONS

0

SEATS

21

Lockheed Howard 250 Tri-Gear

Role:  Passenger Transport

National Origin: United States

Manufacturer: Lockheed

First Flight: 1940

Primary User: Private groups

Number Built: 625

The Reliant was used by the U.S. Army in World War II as a utility aircraft, designated UC-81, and as trainer designated AT-19. They were also used by the Royal Navy and Royal Air Force for light transport and communication duties. After the war they were sold on the civilian market as the Vultee V-77.

The V-77 was a spartan version of the SR-10 with the 300 hp Lycoming R680-E3B, a single door on the left side and the traditional “Bump” cowl was replaced with a simpler smooth cowl. Internal structure was beefed up significantly over the commercial models and a distinctive triangle shaped counterbalance was added to the rudder.

General characteristics

  • Crew: 3
  • Capacity: 18 passengers
  • Length: 49 ft 10 in (15.19 m)
  • Wingspan: 65 ft 6 in (19.96 m)
  • Height: 11 ft 10 in (3.6 m)
  • Wing area: 551 ft² (51.2 m²)
  • Empty weight: 12,500 lb (5,670 kg)
  • Loaded weight: 17,500 lb (7,938 kg)
  • Max. takeoff weight: 21,000 lb (9,825 kg)
  • Powerplant: 2 × Wright R-1820-56S nine-cylinder air-cooled radial engines, 1,350 hp (895 kW) each

Performance

  • Maximum speed: 266 mph (231 knots, 428 km/h) at 17,150 ft (5,230 m)
  • Cruise speed: 200 mph (174 knots, 322 km/h)
  • Range: 2,500 mi (2,174 nmi, 4,025 km)
  • Service ceiling: 25,400 ft (7,740 m)
  • Climb to 10,000 ft (3,050 m): 6.6 minutes