Kalinin K-3

The Kalinin K-3 was a Soviet air ambulance monoplane designed by Konstantin Kalinin.

The K-3 was based, in part, on both the Kalinin K-1 and K-2 and was powered by a BMW IV engine.

It had a metal airframe and an enclosed cabin, holding four passengers or two stretchers.

A large hatch allowed stretchers to be easily loaded and unloaded.

Production of the K-3 began in 1927.

Specifications

Crew

1

Capacity

4 passengers, 740kg

Length

11.25 m (36 ft 11 in)

Wingspan

16.76 m (55 ft 0 in)

Wing area

40 m² (430 sq ft)

Empty weight

1,560 kg (3,439 lb)

Max take-off weight

2,300 kg (5,071 lb)

Powerplant

1 × BMW IV inline engine,

180 kW (240 hp)

Performance

Maximum speed

170 km/h (110 mph, 92 kn)

Cruise speed

140 km/h (87 mph, 76 kn)

Range

730 km (450 mi, 390 nmi)

Service ceiling

3,880 m (12,730 ft)