Akademische Fliegerschaft Breslau Prototypes & Projects

[hesham]

Hi,

The Versuchsflugbau der T.H. Breslau developed this plane under supervision of Prof. Schmeidler,possible to change wing area during flight as variable incidence wing,and called SN-2 of 1930s.

Schmeidler SN-2

Schmeidler SN-2 variable wing geometry

www.histaviation.com

 

[hesham]

Re: Akademischen Fliegerschaft Breslau Prototypes & Projects

Hi,

also the SN-1 was an experimental monoplane,with variable incidence wing,the EE13
was a Project of modified Grunau Baby II in 1933,the EE14 was a single seat glider,
not finished.

Also Prof. Schmeidler and Dipl.-Ing. Rudolf Jaeschke designed a SJ,it was a single seat
experimental biplane of 1930,a projected for a plane with adjustable chord,powered by
one ABC engine,not built.

http://histaviation.com/breslau.html

 

[Wurger]

Interesting ! Thanks for sharing.

 

[Avimimus]

Are you sure variable incidence isn't a mistranslation? It is hard to tell from the photos - but I'd lean towards describing it as variable camber.

 

[Apophenia]

Are you sure variable incidence isn't a mistranslation? It is hard to tell from the photos - but I'd lean towards describing it as variable camber.

Exactly. Flight (13 May 1932) describes it as both variable camber and variable area:
https://www.flightglobal.com/pdfarchive/view/1932/1932%20-%200449.html

 

[richard]

The aircraft shown in Flight and Hesham's first post is the SN-1 D-2257 , the one shown by the THREE pictures in the second Hesham's post is the SN-2 D-YRON .


Versuchsflugzeugbau technische Hochschule Breslau :

SJ :


SN 1 :

SN 2 :

 

[hesham]

Thank you my dear Richard.

 

[L.Pavese]

Are you sure variable incidence isn't a mistranslation? It is hard to tell from the photos - but I'd lean towards describing it as variable camber.

Well, if you mean "variable geometry" as the ability to change only the sweepback angle, then, yes, you are right. But in a broader sense, this system varies shape, camber and wing area, so it does varies "geometry". Also, my translation was meant for a wider, more general public, not strictly for specialists. But thank you for raising a good point. L.

 

[L.Pavese]

Hi,

The Versuchsflugbau der T.H. Breslau developed this plane under supervision of Prof. Schmeidler,
possible to change wing area during flight as variable incidence wing,and called SN-2 of 1930s.

Schmeidler SN-2

Schmeidler SN-2 variable wing geometry

www.histaviation.com

Oh, thank you so much. I will add that to my post. I think a good drawing is always more interesting than a picture.

 

[L.Pavese]

Re: Akademischen Fliegerschaft Breslau Prototypes & Projects

Hi,

also the SN-1 was an experimental monoplane,with variable incidence wing,the EE13
was a Project of modified Grunau Baby II in 1933,the EE14 was a single seat glider,
not finished.

Also Prof. Schmeidler and Dipl.-Ing. Rudolf Jaeschke designed a SJ,it was a single seat
experimental biplane of 1930,a projected for a plane with adjustable chord,powered by
one ABC engine,not built.

Aircraft template

Thanks so much.

 

[L.Pavese]

The aircraft shown in Flight and Hesham's first post is the SN-1 D-2257 , the one shown by the THREE pictures in the second Hesham's post is the SN-2 D-YRON .


Versuchsflugzeugbau technische Hochschule Breslau :

SJ :


SN 1 :

SN 2 :

Thank you very much. Very good.

 

[L.Pavese]

Re: Akademischen Fliegerschaft Breslau Prototypes & Projects

Hi,

also the SN-1 was an experimental monoplane,with variable incidence wing,the EE13
was a Project of modified Grunau Baby II in 1933,the EE14 was a single seat glider,
not finished.

Also Prof. Schmeidler and Dipl.-Ing. Rudolf Jaeschke designed a SJ,it was a single seat
experimental biplane of 1930,a projected for a plane with adjustable chord,powered by
one ABC engine,not built.

Aircraft template

Thank you very much.