Technical data
Type HD 37
Function fighter
Year 1928
Crew 1
Engines 1*750hp BMW VI 7,3Z
1*500/715hp M-17F
Length 6.95m
Wing Span 10.00m
Wing Area 26.71m2
Empty Weight 1296kg
Maximum Weight 1729kg
Wing Load (kg/m2) 65
Power Load 2.3
Speed (0m) 290km/h
Speed (3000m) 277km/h
Turn time 12sec
Range 700km
Ceiling 7200m
1000m 2.0min
2000m 4.0min
3000m 6.6min
5000m 11.4min
Armament 2*mg7.7mm

I-7/HD-37, Heinkel/TsKB

I-7 fighter. 36k b/w photo from the "History of aircraft construction in the USSR", Vol.1 p.436

Heinkel HD 37, single-seat biplane fighter. The HD 37 was not accepted by the clandestine German air force, but the USSR bought a small number (3?) and a licence. The idea was to replace aging I-5 until more advanced domestic designs will be ready.

134 were built in the USSR as the I-7 since 1932, with some technological improvements. Despite expectations, aircraft failed to demonstrate substantial advantages over the I-5. Plus it came 2 years late. Once the I-15 became available in 1934, I-7 production was cancelled.

The BMW VI engine was produced in the USSR as the M-17.

  • "History of aircraft construction in the USSR", Vol.1 p.438-439;

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  • I-7
  • I-7, Heinkel

  • Modified May 15, 1997 Back to
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