BICh-21, SG-1 by B.I.Cheranovskij

72k b/w BICh-21 photo from "History of aircraft construction in the USSR" by V.B.Shavrov, Vol.2 p.113

D
evelopment of light BICh-20, the BICh-21 similar size and general layout... but with 11 times more powerful engine and pneumatically retractable landing gear. Wooden aircraft was built very clean, ailerons and elevones were integrated. Project was launched in 1938, BICh-21 was ready in 1940.
The only design correction implemented after wind tunnel trials was increased tailfin. Flight trials started in 1941 and were interrupted by the War. Aircraft was easy to fly, it was stable and had good response to control. The speed record for the engine class was registered - 417km/h.
66k drawing by Igor Soultanov, "History of aircraft construction in the USSR" by V.B.Shavrov, Vol.2 p.113

PredecessorsModifications

BICh-20
-

ReferencesLinks
  • "History of aircraft construction in the USSR" by V.B.Shavrov, Vol.2 p.114;
  • None
  • Technical data
    Type BICh-21, SG-1
    Function Experimental Sport/Racer
    Year 1941
    Crew 1
    Engines 1*220hp MV-6
    Length 4.74m
    Wingspan 6.75m
    Wing area 9.0m2
    Empty weight 526kg
    Loaded weight 643kg
    Wing load 71.5kg/m2
    Power load 2.9kg/hp
    Speed at 0m 385km/h
    Maximum Speed 417km/h
    Landing Speed 80km/h
    Created July 16, 1998
    by Alexandre Savine
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