| 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 |
| Climb | |
| 1000m | 4min |
| 2000m | 9min |
| 3000m | 25.2min |
| Payload | |
| Fuel+Oil | 450+50kg |
| Armament | |
| Guns | 1*? |
KR-1 (He-55) by Heinkel
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.
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