Standard H-2

The Standard H-2 was an early American Army reconnaissance aircraft, ordered in 1916. The H-2 was built by the Standard Aircraft Corporation, and previously known as the Sloane H-2. It was an open-cockpit three-place tractor biplane, powered by a 125 hp (90 kW) Hall-Scott A-5 engine. Only three were built.

H-2
Standard H-3
Role Trainer
National origin United States
Manufacturer Standard Aircraft Corporation

An improved version, the H-3, with the same engine, earned an order for nine aircraft, while the Navy ordered three with floats as the H-4H.

Two Standard H-3s were sold by the US Army to Japan, where a further three were built by the Provisional Military Balloon Research Association (PMBRA) in 1917, powered by 150 hp (110 kW) Hall-Scott L-4 engines. They were used as trainers between May 1917 and March 1918, although they were considered dangerous.[1]

Operators
 Japan
 United States

Specifications (H-3)
H-4H seaplane

Data from Course in Aerodynamics and Airplane Design: Part II–Section 1[2]

General characteristics

  • Crew: 2
  • Length: 27 ft 0 in (8.23 m)
  • Wingspan: 40 ft 1 in (12.22 m)
  • Wing area: 532 sq ft (49.4 m2)
  • Empty weight: 2,500 lb (1,134 kg)
  • Gross weight: 3,300 lb (1,497 kg)
  • Fuel capacity: 68 US gal (57 imp gal; 260 L)
  • Powerplant: 1 × Hall-Scott A-5 straight-6, 135 hp (101 kW)

Performance

  • Maximum speed: 84 mph (135 km/h, 73 kn)
  • Stall speed: 46 mph (74 km/h, 40 kn)
  • Endurance: 6 hr
  • Time to altitude: 10 minutes to 3,400 ft (1,000 m)
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References
Notes
  1. Mikesh and Abe 1990, p. 55.
  2. Klemin and Huff Aviation 15 February 1917, p. 91.
Bibliography
  • Klemin, Alexander and T. H. Huff. "Course in Aerodynamics and Airplane Design: Part II–Section 1". Aviation, Volume II, No. 2, 15 February 1917, pp. 91–92. (Registration required).
  • Donald, David, ed. Encyclopedia of World Aircraft, p. 854, "Standard aircraft". Etobicoke, Ontario: Prospero Books, 1997.
  • Mikesh, Robert C. and Shorzoe Abe. Japanese Aircraft, 1910-1941. London: Putnam, 1990. ISBN 0-85177-840-2.
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