Little-Known French Projects and Prototypes

hesham

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hesham said:
here is the Jean Simon unknown helicopter project,there's no sign for this design
on Internet.

http://gallica.bnf.fr/ark:/12148/bpt6k65560687/f2.image
Here is a more Info about this designer and his anther idea,from TU 291;

In 1932 Jean Simon patented a
boundary layer control device
called "turbo-rotor." This device consisted in adapting a turbo-rotor to
paddle or vane, mechanically driven, positioned at the center of
running over the entire span of the wing.
The air circulating on the extrados was sucked in and
repressed on the underside. Several provisions
of the idea were patented and a demonstrator was tested at the wind tunnel of
STAé in Issy-les-Moulineaux in May 1933
under the direction of the Chief Engineer
Lapresle. Built at Zodiac, on the
plans of Simon, this wing of experience
was constituted by a rectangular plane
thick profile: box construction
wood, duralumin rotor, mounting on ball rollings and steel bearings. The
motive power was given by two compressed air turbines placed at each end of the rotor. The dimensions were:
length of 1,430 m; profile depth
297 mm; 53 mm thick; total thickness with the rotor of 90 mm (the rotor exceeded under the intrados).

The tunnel tests demonstrated
especially that the rotor had to turn to a
extremely high speed. In the
it could not exceed 3,000 tr/mn,
which proved very insufficient, the aspiration
at the extrados then being almost zero. he
should have reached a speed of at
minus 8 500/9 000 tr/mn, which was not
possible with compressed air turbines.
 

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hesham

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From ROTARY WING AIRCRAFT HANDBOOKS AND HISTORY VOLUME 13,

Mr. L. E. Trouffion had begun a construction of a helicopter in 1928 ?.
 

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dan_inbox

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Wonder if there is some joke in that piece: "Le Trouffion" is French military slang for "the low-rank soldier"...
 
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