Technical data
Type K-5
Function Passenger
Year 1929 1931 1934
Crew 2
Engine 450hp M-15 480hp M-22 500/736hp M-17F
Length 15.87m 15.7m 16.5m
Wingspan 20.5m
Wing area 66.0m2
Empty weight 2275kg 2400kg 2740kg
Loaded weight 3750kg 3600kg 4030kg
Wing Load (kg/m2) 56.7 54.5 60
Power load (kg/hp) 8.4 7.5 6.7
Maximum Speed (0m) 190km/h 185km/h 209km/h
Cruise Speed 157km/h 154km/h 170km/h
Landing Speed 75km/h 75km/h 80km/h
Take off Roll 250m/20sec 21sec 170m
Landing Roll 200m/18sec - -
Range 950km 820km 960km
Ceiling 4780m 4450m 5040m
Climb
1000m 7.0min 8.0m 8.8m
2000m 15.5min 17.0min 20.2min
3000m 28.0min 30.0min 36.8min
4000m 48min 50min 66min
Payload
Seats 8

K-5, K.A.Kalinin

20k b/w photo from the "History of aircraft construction in the USSR", Vol.1 p.415

One of the most popular passenger aircraft in 30's. It was very economical and easy to maintain. The only imported parts were landing gear chromium-molibdenium axis. It differed from its predecessors (K-1, K-2, K-3, K-4) by dual controls, more powerful engine (M-15, M-22, M-17F) and (later) strengthened airframe.

First 100 production K-5 were powered by l.c. M-15, but it was unreliable and resulted in frequent emergency landings. Since 1930 a.c. M-22 was installed. It was very reliable, but flight characteristics slightly degraded due to larger drag. Pre-production aircraft was rolled out on February 14 1932 and presented on State Acceptance trials (May 26 - June 26, Moscow). 550 takeoffs/landings and 2000 sharp turns were performed without a trouble (pilot M.A.Snegirev), but aircraft was rejected for low payload capacity. While modified K-5 with M-15 was accepted for production in May 1932.

In 1933 installation of powerful l.c. M-17F resulted in wing leading edge collapse (during flight tests) due to increased speed and weight. Problem was fixed by replacing (or strengthening) the wing on aircraft with this engine. Weight was increased, resulting in decrease in payload or range.

260 K-5 were built during 1930- 1934, replacing German aircraft on Ukrainian airlines.

In service as a major passenger aircraft until 1940.

Military use (bomber) was debated, in February 1932 KhAZ started construction of two 'special role' K-5 (bombers). Trials result (Summer 1932) were disappointing (400kg bombs at 190...200km and this variant was rejected in August.

The only military service - with Borderguards and VV OGPU. Five K-5 were among 54 aircraft organized into 6 divisions, established in 1932.

SourcesLinks
  • "History of aircraft construction in the USSR", Vol.1 p.416-417
  • K-5
  • K-5 at Virtual Aircraft Museum

  • Modified May 15, 1997 Back to
    Main Gate