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


O
nce cause of IL-400a crush 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.
Predecessor(s)Modification(s)
IL-400a IL-3 I-1
References:
  • "History of aircraft construction in the USSR" by V.B.Shavrov, Vol.1 p.354-355;
    More Links...
  • I-1 at Virtual Aircraft Museum
  • IL-400, Polikarpov
    		• 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 75.0kg/m2
    Power load 3.7kg/hp
    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
    Climb
    1000m 1.9min
    2000m 4.0min
    3000m 6.5min
    4000m 9.0min
    5000m 16.0min
    Modified December 2, 1997
    by Alexandre Savine;    		 Back to
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