AIR-2S, Ya-2S, A.S.Yakovlev
4bk b/w the AIR-2S engine start near the Krymskij Most (Crimea Bridge), Moscow river, Moscow. Crowd on the bridge is ready for a show ('Notes of an aircraft designer') 20k drawing from "History of aircraft construction in the USSR" by V.B.Shavrov, Vol.1 p.428
V
ersion of the AIR-2 with more powerful 'Siemens' engine. Performance was improved substantially. It became possible to install AIR-2S on floats designed by V.B.Shavrov. Floatplane version was flown on May 18, 1931. Transition from wheels to floats took as little as 1hour 10minutes. Pilot B.L.Bukhgolts and passenger V.B.Shavrov performed short straight flight, and without stopping the engine another 10 minutes circle flight. Next crew to fly were Ju.I.Piontkovskij and A.S.Yakovlev.
Aircraft was flown many times on Moscow river (Moscow) without any problems.
References:
  • "History of aircraft construction in the USSR" by V.B.Shavrov, Vol.1 p.427;
  • 'Notes of an aircraft designer' by A.S.Yakovlev;
    More Links:
  • A.S.Yakovlev Museum;
  • Yakovlev aircraft at D.Levin AirPage
    		• Technical data
    Type AIR-2S/Ya-2S AIR-2S/Ya-2S floatplane
    Function trainer
    Year 1931 1931
    Crew 2
    Engines 1*60hp 'Cirrus I'
    Length 7.0m 7.7m
    Wingspan 8.8m
    Wing area 18.7m2
    Empty weight 420kg 470kg
    Loaded weight 660kg 710kg
    Wing load 35.3kg/m2 38.0kg/m2
    Power load 7.8kg/hp 8.4kg/hp
    Maximum Speed at 0m 150km/h 140km/h
    Cruise Speed 130km/h 120km/h
    Landing Speed 60km/h 65km/h
    Landing Roll 7sec 7sec
    Takeoff Roll - 20sec
    Ceiling - 3350m
    Range - 500km
    Modified January 21, 1998
    by Alexandre Savine;    		 Back to
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