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 (kg/m2) 38.0
Power load (kg/hp) 10.5
Maximum Speed at 0m 150km/h
Landing Speed 66km/h
Flight Endurance 4h
Range 500km
Ceiling 4000m
Climb
1000m 6.0min
3000m 30.0min

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

40k b/w AIR-4 photo from "Russian Civil and Military aircraft 1884~1969", p.82.
Mistaken for AIR-3.

AIR-3 with redesigned landing gear, providing wider gear base. Flying characteristics were almost identical to those of the predecessor.

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

Predecessor(s) Modification(s)

AIR-3 Ya-3
AIR-8
Ya-8


References:
  • "History of aircraft construction in the USSR", Vol.1 p.429;

  • Modified December 26, 2001 Back to
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