Sh-Tandem, Tandem-MAI, MAI-3, P.D.Grushin/MAI

32k and 20k b/w photos from the "History of aircraft construction in the USSR" Vol.2 by V.B.Shavrov, p.51

E
xperimental ground attack aircraft, with tail planes as large as 45% of the wing area. Elevators (on the 'tail' wing) served also as ailerons. Twin tailfins placed BELOW the 'tail wing' for unrestricted gunner's operation. Main gear was retractable.
This wonder of nature was built in MAI workshops. Flight test started December 5, 1937 and lasted until 1939 (pilot P.M.Stefanovsky). Results were positive, better than typically observed for tandem aircraft. But lack of support did not allow the aircraft to enter mass production.
Sources:
  • "History of aircraft construction in the USSR" Vol.2 by V.B.Shavrov, p.50
  • Technical data
    Type Sh-Tandem-MAI
    Function Ground Attack, Experimental
    Year 1937
    Crew 2
    Engines 1*930hp M-87
    Length 8.5m
    Wingspan 11.0m
    Wing area 30.4m2
    Loaded weight 2560 (3088?)kg
    Wing load 84kg/m2
    Power load 3.3kg/hp
    Speed at 0m 460km/h
    Speed at 4200m 488km/h
    Armament
    Guns 5*ShKAS
    Bombs 200kg
    Modified June 14, 1997
    by Alexandre Savine;
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