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Berger-Helicopter

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Hans Berger was a Swiss inventor noted for the two successful helicopters that he designed and built by himself with no formal aeronautical training: the BX-50 of 1961 and the BX-110 of 1974. The latter design proved sound enough to earn a certificate of airworthiness from the Swiss Board of Aviation. Besides these two machines, Berger's other inventions were a jet-powered car, and numerous other helicopter designs. Professionally, Berger was the sales representative for Brantly in Switzerland and Liechtenstein.

Unbuilt helicopter projects included:

  • Berger HB-25 - 4 seat design with turbine power
  • Berger BX-111 - 2 seat design with Wankel-type engine and coaxial rotors
  • Berger BX-200 - 2 seat design with turbine power
  • Berger BX-300 - 3 seat design with stub wings, to be powered by Turboméca turbine

References

  • Gunston, Bill (1993). World Encyclopedia of Aircraft Manufacturers. Annapolis: Naval Institute Press. {{cite book}}: Cite has empty unknown parameter: |1= (help)
  • Aero Revue (March 1964)
  • Der Flieger (March 1964)
  • Cockpit (December 1989)
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