AIR-4, Ya-4, A.S.Yakovlev

14k b/w AIR-4 from "History of aircraft construction in the USSR" by V.B.Shavrov, Vol.1 p.428;

with redesigned landing gear, providing wider gear base. Flying characteristics were almost identical to those of the predecessor.
Predecessor(s) Modification(s)

AIR-3 Ya-3		 AIR-8
Ya-8
References:
  • "History of aircraft construction in the USSR" by V.B.Shavrov, Vol.1 p.429;
    		• Technical data
    Type AIR-4
    Function trainer
    Year 1930
    Crew 2
    Engines 1*60hp 'Walter'
    Length 7.1m
    Wingspan 11.0m
    Wing area 16.5m2
    Empty weight 395kg
    Loaded weight 630kg
    Wing load 38.0kg/m2
    Power load 10.5kg/hp
    Maximum Speed at 0m 150km/h
    Landing Speed 66km/h
    Flight Endurance 4h
    Range 500km
    Ceiling 4000m
    Climb
    1000m 6.0min
    3000m 30.0min
    Modified January 22, 1998
    by Alexandre Savine;    		 Back to
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