Heinkel HD 37

HD 37, I-7
A VVS Polikarpov I-7
General information
TypeFighter
National originGermany
ManufacturerHeinkel, TsKB
Primary userSoviet Air Force
Number built2x HD37 and 132+ I-7
History
First flight1928

The Heinkel HD 37 was a fighter aircraft, designed in Germany in the late 1920s, but produced in the USSR for Soviet Air Force service. It was a compact, single-bay biplane with staggered wings of unequal span, braced by N-type interplane struts. The pilot sat in an open cockpit, and the main units of the tailskid undercarriage were linked by a cross-axle.