Willy Rosenfelter & S.T.A.L. projects

Retrofit

Retrofit

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Some information on the first projects (X1 to X4) of the S.T.A.L. (perhaps Societa Torina de Aero Legero, but realy needs comfirmation) of the following website:
http://planetoplano.blogspot.com/2017/04/rosenfelders-flying-wing.html

Who knows more on the other aircraft designed by Rosenfelder and this company?

Thanks in advance
 

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Amazing and brilliant find my dear Retrofit,

and of course I know this company,and I spoke about it,so we must merge those
topics;

https://www.secretprojects.co.uk/forum/index.php/topic,23808.msg242467.html#msg242467

and for more Info about STAL-11;

http://www.avia-it.com/act/cera_una_volta/echi/CUV_Echi_2017/Seg_art_feb_17/La_curiosa_storia_della_STAL_prima_parte.pdf
 
Maveric said:
As I can see the STAL-11 was a powerplant.
Click to expand...

Maveric: The S.T.A.L. 11 was not an engine, but a 2-seat tandem light aircraft. It was intended to be powered by an original S.T.A.L. powerplant - a new horizontally-opposed 2-cylinder engine. That HO2 was designed by former Fiat engine designer, ing. Guilio Cesare Cappa who had joining the S.T.A.L. design team.

The Cappa HO2 was not a success and, in 1942, one of the S.T.A.L. 11 airframes was re-engined with the new CANSA C.80 inverted 4-cylinder. In the meantime, S.T.A.L. had folded. The re-engined S.T.A.L. 11 flew on 30 June 1942 and was redesignated CANSA C.4. The C.4 was judged a success but the equivalent AVIA L.3 was already in production.

Retrofit: The full name for SA S.T.A.L. was società anonima Studi Tecnici Aeroplani Leggeri or Light Airplanes Technical Studies anonymous company (akin to a public limited company).
 
Thanks Apophenia for this complete designation of STAL and details of the engines.

All the best,
 
Thank you my dear Apophenia,

and I hope my dear Jemiba merge those topics with new title here;

https://www.secretprojects.co.uk/forum/index.php/topic,23808.msg242467.html#msg242467
 
www.leonardopavese.dev

Rosenfelder's Flying Wing

www.leonardopavese.dev www.leonardopavese.dev

"it is interesting because it clearly proves that the concept of ultra-low-aspect ratio wings, capable to fly at very high angle of attacks and therefore at very low airspeed, had also intrigued aircraft designers of the Old World, like Willy Rosenfelder. "
"... a formula that at the time had many advocates in Europe. It must be pointed out that, in the same period, Dr. Flaminio Piana Canova was investigating analogous wing designs at the Politecnico of Turin; although Dr. Canova’s wings were trapezoidal in shape rather than elliptical like Rosenfelder’s."

It references the Piana Canova rhomboidal designs

This is among a lot of interest everywhere in such things, most notably the Arup S-2, the Nemeth parasol circular wing, the similar Farman 1020 which worked well. They also explain wartime interest from a few directions.
 

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