From Wikipedia, the free encyclopedia
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 .
[1]
General characteristics
Crew: 2
Length: 8.3 m (27 ft 3 in)
Upper wingspan: 12 m (39 ft 4 in)
Lower wingspan: 10.4 m (34 ft 1 in)
Wing area: 34.8 m2 (375 sq ft)
Empty weight: 1,200 kg (2,646 lb)
Gross weight: 1,700 kg (3,748 lb)
Fuel capacity: 400 L (110 US gal; 88 imp gal)
Powerplant: 1 ×
BMW IV 6-cylinder water-cooled in-line piston engine, 170 kW (230 hp)
Propellers: 2-bladed fixed pitch propeller
Performance
Maximum speed: 204 km/h (127 mph, 110 kn)
Landing speed: 86 km/h (53 mph; 46 kn)
Service ceiling: 6,000 m (20,000 ft)
Rate of climb: 4.5 m/s (890 ft/min)
Wing loading: 48.8 kg/m2 (10.0 lb/sq ft)
Power/mass : 0.1236 kW/kg (0.0752 hp/lb)
See also
Related lists
References
^ Grey, C.G., ed. (1928). Jane's all the World's Aircraft 1928 . London: Sampson Low, Marston & company, ltd. p. 138c.
Further reading
Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation . London: Studio Editions. p. 498.
External links
Company designations pre-1933
Heinkel Eindecker (HE) monoplanes Heinkel Doppeldecker (HD) biplanes
RLM designations 1933–1945 Projects 1933–1945 Foreign designations