Technical data
Type KR-1 (He-55)
Function Shipborn reconnaissater
Year 1930
Crew 2
Engines 1*480hp M-22
Length 10.4m
Height ?m
Wingspan 14.0m
Wing area 56.9m2
Empty weight 1550kg
Loaded weight 2200kg
Wing Load (kg/m2) 38.7
Power load (kg/hp) 4.6
Maximum Speed at 0m 194km/h
Cruise Speed 172km/h
Landing Speed 80km/h
Range 800km
Flight Endurance 5h30min
Ceiling 4800m
1000m 4min
2000m 9min
3000m 25.2min
Fuel+Oil 450+50kg
Guns 1*?

KR-1 (He-55) by Heinkel

30k b/w KR-1 from "History of aircraft construction in the USSR", Vol.1 p.413

Two-seat catapult-launched biplane flying boat, ship-born reconnaissater (so KR). Thirty wooden airframes (1930 vintage) were purchased and equipped with M-22 engines. Two catapults were also purchased and installed on navy ships. Nonetheless, most of KR-1 were 'launched' by crane (not by catapults).

During Fall 1931 premature decay of lower wings was noticed on all 12 aircraft serving with Baltic Fleet. Special expert group investigated the problem. All repairs were covered by manufacturer.

In winter season KR-1s were installed on skis to operate from ice/snow. Test flights on skis were performed by Patsynko in January 1932 (1931??) at Oranienbaum. In September 1932 new more durable domestic propellers were installed. Cruise speed was increased to 186km/h, but climb rate suffered.

In service until 1938.

  • "History of aircraft construction in the USSR", Vol.1 p.413-414;
  • KR-1
  • He-55

  • Created January 25, 1996
    Modified May 27, 1999
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