I-7/HD-37, Heinkel/TsKB

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

H
einkel 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.
Sources
  • "History of aircraft construction in the USSR", Vol.1 p.438-439;
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  • I-7, Heinkel
  • Technical data
    Type HD 37
    Function fighter
    Year 1928
    1932
    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 65kg/m2
    Power Load 2.3kg/hp
    Speed (0m) 290km/h
    Speed (3000m) 277km/h
    Turn time 12sec
    Range 700km
    Ceiling 7200m
    Climb
    1000m 2.0min
    2000m 4.0min
    3000m 6.6min
    5000m 11.4min
    Armament
    Armament 2*mg7.7mm
    Modified May 15, 1997
    by Alexandre Savine;
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