Technical data
Type IL-400b
Function Fighter
Year 1924
Crew 1
Engines 1*400hp Liberty/ M-5
Length -
Wingspan 10.8m
Wing area 20.0m2
Empty weight 1112kg
Loaded weight 1510kg
Wing Load (kg/m2) 75.0
Power load (kg/hp) 3.7
Max.Speed at 0m 264km/h
Max.Speed at 3000m 148km/h
Range 650km
Flight Endurance 2.5h
Takeoff Roll 7.0sec
Turn time -
Ceiling 6750m
1000m 1.9min
2000m 4.0min
3000m 6.5min
4000m 9.0min
5000m 16.0min

IL-400b N.N.Polikarpov, I.M.Kostkin, A.A.Popov

56k b/w IL-400b from "History of aircraft construction in the USSR", Vol.1 p.354

Once cause of IL-400a crash was revealed, aircraft was radically rebuilt. Engine was moved forward, front radiator was replaced by Lamblen radiator. Wing span and tail surfaces area were increased. Wooden structure of the wing ant tail surfaces were made now completely of aluminum alloy ('Kolchugaluminij').

Aircraft rolled out during Spring 1924. After series of flight tests (pilots A.I.Zhukov and A.N.Ekatov) it was accepted for series production.

IL-400a IL-3 I-1

  • "History of aircraft construction in the USSR", Vol.1 p.354-355;

  • More Links...
  • I-1
  • I-1 at Virtual Aircraft Museum
  • IL-400, Polikarpov

  • Modified December 2, 1997 Back to
    Main Gate