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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.
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The Heinkel HD 14 was a single-engine biplane torpedo aircraft developed by the German aviation company Ernst Heinkel Flugzeugwerke in the 1920s, and produced in a single prototype, under license, from Swedish by Svenska Aero in Stockholm.
The Heinkel HD 16 was a single-engine biplane torpedo aircraft developed by the German aviation company Ernst Heinkel Flugzeugwerke in the nineteen-twenties and produced under license by Svenska Aero in Stockholm, Sweden.
The Heinkel HD 19 W was a biplane seaplane fighter developed by Ernst Heinkel Flugzeugwerke.
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References
- ↑ de Agostini. World Aviation. Heinkel: HD 25 - HD 44 Series Biplanes
- ↑ Alternative history. Mail plane Heinkel HD 40
- ↑ "Heinkel HD.44". airwar.ru.