Technical data
Type I-1
Function Fighter
Year 1923
Crew 1
Engines 1*400hp M-5
Length 7.32m
Wingspan 10.80m
Wing area 26.80m2
Speed at 0m 230km/h
Landing Speed 95km/h
Range 600km
Flight Endurance 2h30min
Ceiling 6000m
Guns 2*mg7.62mm

I-1, D.P.Grigorovich

Project of the I-1 was presented in 1921. It carries same designation as the I-1 N.N.Polikarpov, because was created under same State Order. Aircraft was built in very short time (during Fall 1923).

Single-seat biplane fighter of wooden construction, with a neatly cowled engine (cooling problems during first tests). Radiators were installed on landing gear struts. It was fastest aircraft at Moscow Central Airfield (Khodynka (Frunze) Airfield), and its flights were very impressive. It was maneuverable, but...

In short time it was found that handling (stability) and climb were unsatisfactory. I-1 was redesigned, becoming the I-2.


  • "History of aircraft construction in the USSR", Vol.1 p.335-336;
  • I-1, Grigorovich

  • Created January 25, 1996
    Modified August 10, 1998;
    Back to
    Main Gate