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The unbuilt helicopter projects of Hans Berger

hesham

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Hi,

from Wikipedia;
https://en.wikipedia.org/wiki/Berger-Helicopter

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.
 

Hammer Birchgrove

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Why the heck can't I make a link that takes you directly to the article? ???
 

hesham

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Thank you my dear Maveric,

and here is the Berger BX-50 single seat helicopter,and
BX-111 project.

http://www.heli-archive.ch/index.php?id=85&L=1
 

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Grey Havoc

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I suppose you could alternatively classify the BX-50 as an 'ultra-light' helicopter. :)
 

hesham

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Excellent my dear Jemiba,


and the last one is new for me.
 

Jemiba

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... and in From "Der Flieger", December 1964, there was a 3-view of the BK-300:
 

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hesham

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Hi,

I add a two pictures to reply # 3,please note the different between two BX-111 drawings.
 

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