Helicopter by N.I.Sorokin

Twin-rotor helicopter with tractor propeller. All rotors powered by single 50hp Argus engine. Construction started in 1909 (St.Petersburg), aircraft was re-designed several times and never finished.


References:
  • "History of aircraft construction in the USSR", Vol.1 p.41-42;
    • 44k b/w photo from "History of aircraft construction in the USSR", Vol.1 p.41
    Modified September 18, 1997 Back to
    Main Gate