BICh-14, TsKB-10 by B.I.Cheranovskij


S
imilar in layout to the BICh-7A, the BICh-14 emerged from the wind tunnel trials of the BICh-10 scale model. It was a twin-engine flying wing with retractable landing gear and passenger cabin. It was built mostly of wood with fabric skin, duralumin was used on the cabin.
The wing was had three separate sections (central and two outer panels). Four spurs and 60 ribs made the wing structure. Taunend ring were installed on the engines, located on the leading edge of the wing.
Aircraft was assembled on Menzhinsky Factory (within TsKB system). First flights by Yu.I.Piontkovsky were performed in late 1934. In 1934 BICh-14 was presented on State Trials at the NII VVS. There it was flown by P.M.Stefanovskij and I.F.Petrov. Stability and control efficiency were found unsatisfactory.
Poor performance was explained by:
  • Symmetrical airfoil of ailerons and elevones;
  • Tailfin was not blown by the propellers;
  • Engines on the leading edge of thick wing;
    Trials continued (as part of experimental program) until 1937.
    PredecessorsModifications

    BICh-7A
    BICh-10 ???

    ReferencesLinks
  • "History of aircraft construction in the USSR" by V.B.Shavrov, Vol.1 p.567-568;
  • None
  • Technical data
    Type BICh-11
    TsKB-10
    Function Experimental
    Year 1934
    Crew 1
    Engines 2*100hp M-11
    Length 6.0m
    Wingspan 16.2m
    Wing area 60m2
    Empty weight 1285kg
    Loaded weight 1900kg
    Wing load 31.6kg/m2
    Power load 8.7kg/hp
    Speed at 0m 220km/h
    Landing Speed 70km/h
    Payload
    Seats 5
    Created July 15, 1998
    by Alexandre Savine
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