Technical data
Type K-1
Function Passenger
Year 1925
Crew 1
Engines 1*170hp Salmson
Length 10.72m
Wingspan 16.76m
Wing area 40.0m2
Empty weight 1452kg
Loaded weight 1972kg
Wing Load (kg/m2) 49.3
Power load (kg/hp) 12.3
Maximum Speed (0m) 161km/h
Cruise Speed 130km/h
Landing Speed 70km/h
Take off Roll 120m
Landing Roll 180m
Range 600km
Ceiling 3000m
1000m 12.3min
2000m 30min
3000m 75min
Seats 3
Load 330kg

K-1/ RVZ-6, K.A.Kalinin

16k b/w photo from the "History of aircraft construction in the USSR", Vol.1 p.415

High wing monoplane, first in the USSR had fuselage frame made of wielded steel tubes, without bracing wires. Front section covered with aluminum, tail (behind passenger section) - with fabric. Central section of the wing was included into fuselage structure. Project was approved for construction in May 1924.

Aircraft was built as a K.A.Kalinin graduation project at RVZ-6 (Aircraft repair workshop) in Kiev by team including D.L.Tomashevich, A.N.Gratsianskij, A.T.Rudenko starting September 1924. It was ready in June 1925, made first flight with young military pilot S.A.Kosinsky on controls and K.A.Kalinin as a passenger/observer. Aircraft was ferried to Moscow (September) for State Acceptance tests. At that moment obsolete 170hp Salmson engine was replaced by more advanced 240hp BMW-IV.

K-1 was found acceptable for service in the Civil Air Fleet, and it was decided to continue development of this type. K.A.Kalinin got for this purpose workshops of Ukrvozdukhput (Ukraina Airways, literally), late renamed into GROS. This experimental enterprise will became a mass production factory in its time.

  • "History of aircraft construction in the USSR", Vol.1 p.415-416

  • Modified May 25, 1997 Back to
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