The Heinkel HD 22 was a trainer designed in Germany during the 1920s. It was a conventional single-bay biplane with staggered wings braced with N-type interplane struts. The pilot and instructor sat in tandem, open cockpits, and the main units of the fixed, tailskid undercarriage were linked by a cross-axle.

The main producer of the type was Manfred Weiss in Hungary, which built the design to equip the Hungarian Air Force, which was at that time masquerading as civil flying clubs. Around 30 aircraft were purchased, making this the most significant user of the type.

One HD 22 was purchased by the US Army Air Corps for use by the US military attache in Germany.

Operators

Hungary

United States

Specifications

Heinkel HD 22 3-view drawing from Le Document aéronautique January,1927

Data from Jane's all the World's Aircraft 1928.

General characteristics

  • Crew: 2
  • Length: 8.3m (27ft 3in)
  • Upper wingspan: 12m (39ft 4in)
  • Lower wingspan: 10.4m (34ft 1in)
  • Wing area: 34.8m2 (375sqft)
  • Empty weight: 1,200kg (2,646lb)
  • Gross weight: 1,700kg (3,748lb)
  • Fuel capacity: 400L (110USgal; 88impgal)
  • Powerplant: 1 × BMW IV 6-cylinder water-cooled in-line piston engine, 170kW (230hp)
  • Propellers: 2-bladed fixed pitch propeller

Performance

  • Maximum speed: 204km/h (127mph, 110kn)
  • Landing speed: 86km/h (53mph; 46kn)
  • Service ceiling: 6,000m (20,000ft)
  • Rate of climb: 4.5m/s (890ft/min)
  • Wing loading: 48.8kg/m2 (10.0lb/sqft)
  • Power/mass: 0.1236kW/kg (0.0752hp/lb)

See also

Related lists

Further reading

  • Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions. p.498.

External links

  • [dead link]