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Oskar von Asboth helicopters

ChuckAnderson

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Hi Pioneer!

I located a picture of the Oscar AH-4 helicopter from Hungary.

Chuck
 

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ChuckAnderson

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ChuckAnderson said:
Hi Pioneer!

I located a picture of the Oscar AH-4 helicopter from Hungary.

Chuck
Hi Pioneer!

I just found a side-view line drawing of the Oscar AH-4!

Chuck
 

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hesham

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Hi,

here is two Oskar von Asboth helicopter projects.

http://www.flightglobal.com/pdfarchive/view/1943/1943%20-%200890.html
 

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hesham

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Hi,

the Asboth helicopters,one was displayed before and the other is
new.

http://www.flightglobal.com/pdfarchive/view/1939/1939-1-%20-%200568.html
http://www.flightglobal.com/pdfarchive/view/1935/1935%20-%201134.html
 

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Nick Sumner

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Reading the article it seems that Asboth used a non hinged rotorblade design. Is that feasible? Or is that the reason his designs dissapeared?
 

Wurger

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hello :),

quite interesting stuff. New to me.
 

Jemiba

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"Asboth used a non hinged rotorblade design. Is that feasible?"

Just read in the latest vertiflite issues : Boris Yur'ev used exactly such
a rotor in his designs and the 1-EA not only flew, but even achieved
an unofficial altitude record with 605m .
 

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Stargazer2006

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Topic split. Any more pics or info on Oscar helicopters?
 

Jemiba

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hesham said:
here is a strange Asboth design.
It's a patent drawing. Compared to those other "flying bird cages", it's a very clean and elegant
design, I think.
But THAT site actually seems to be a gold mine ! It's a pity, that those pictures are very low res indeed,
but as it is run by an official German foundation, maybe there's a chance to get some help.
The basic website is made with creative artists in mind, but we all ARE artists, aren't we ? ;)
 

hesham

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Hi,

here is a helicopter (AH-3) from Asboth,page 127;

http://kulturserver-nds.de/home/hubtest/medien/Neg.Nr.GUN.pdf
 

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hesham

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Hi,

http://www.avia-it.com/act/biblioteca/periodici/PDF%20Riviste/Ala%20d'Italia/L'ALA%20D'ITALIA%201940%2001.pdf
 

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Avimimus

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Do the patents clarify what the end plates on the wings were intended for? My first guess was that they had control surfaces making use of the rotor wash, but I don't see any mechanisms.
 

Schneiderman

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In UK patent 432245, for an earlier design, they are described as 'stabilising surfaces' pivoting on a horizontal axes aligned longitudinally.
 

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Schneiderman

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Better images of Asboth's 1933 design as seen in UK patents 432124 and 432245
 

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Schneiderman

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...and the 1939 design as in posts #3 and #17
(from Flight https://www.flightglobal.com/pdfarchive/view/1939/1939-1-%20-%200568.html)
 

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Zizi6785

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Based on recent research, Asboth managed well himself :)
An image from her book. The second is the original version, found after his death.
 

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hesham

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Schneiderman said:
Better images of Asboth's 1933 design as seen in UK patents 432124 and 432245
Nice find my dear Schneiderman.
 

dan_inbox

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Oskar von Asboth AH-3 helicopter

A photo of the AH-3 model:

from Index.hu article (https://index.hu/tudomany/2016/11/28/a_nagy_asboth-sejtes_feltalalo_vagy_kokler/ in Hungarian) which, is interestingly titled "Asboth, genius or cheat".
 

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