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Post Info TOPIC: The unbuilt and little-known helicopter projects of Hans Berger


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Date: Nov 8, 2010
The unbuilt and little-known helicopter projects of Hans Berger
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Hi,

from Wikipedia;
http://en.wikipedia.org/wiki/Hans_Berger_(aircraft_manufacturer)

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.

Here is BX-111;


-- Edited by hesham on Monday 8th of November 2010 11:45:34 PM

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hesham


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Berger BX-50 (Switzerland) was a single-seat light helicopetr flown in prototype form in the 1970s. Powered by a 67kW Continental C90 flat-four engine.

Berger BX-110 [see attachment] was a two-seat light helicopter powered by a 134kW Wankel rotating piston engine. Prototype flew for the first time on 3 June 1974.

From "Jane's Encyclopedia of Aviation" by M. Taylor



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Commander31 wrote:

Berger BX-50 (Switzerland) was a single-seat light helicopetr flown in prototype form in the 1970s. Powered by a 67kW Continental C90 flat-four engine.

Berger BX-110 [see attachment]�was a two-seat light helicopter powered by a 134kW Wankel rotating piston engine. Prototype flew for the first time on 3 June 1974.

From "Jane's Encyclopedia of Aviation" by�M. Taylor


 

These aren't "unbuilt" though. no



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-airfoil- wrote:

These aren't "unbuilt" though.  no



Oops...



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Don't worry, topic renamed for all Hans Berger's little known rotorcraft.



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Berger BX-50 single-seat helicopter



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555


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Berger BX-110

Source unknown, but posted by Maveric at SPF.


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From "Der Flieger", March 1964, the BK-300 3-seat turbine helicopter and
an amphibian helicopter project without designation:



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And from the December issue of the same mag a 3-view of the BK-300:



-- Edited by Jemiba on Sunday 21st of April 2013 06:19:07 PM

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Thanks for these ones, Jens! I've updated the main site with these findings.



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