Landwerlin-Berreur FSW aircraft of 1922

[hesham]

Hi,


here is the Landwerlin-Berreur FSW patent aircraft of 1922,I don't know if it
was a real design or not,but it was from Germany.


http://alternathistory.org.ua/sportivnyi-samolet-s-krylom-obratnoi-strelovidnosti-proekt-1922-goda

 

[Retrofit]

Great Find Hesham,

This design is in fact French
Two French Georges Marie André Landwerlin and Georges André Berreur designed this aircraft for the Deutsch de la Meurthe Coupe 1922. The racer was built in the Hanriot workshop but was not finished in time. Pilot was to be WW1 ace Charles Nungesser.
The engine was the huge Fiat A-14 of 700hp. Span: 13,26m; Length: 6,00m; Area: 22,2m2; Estimated max speed: 450 km/h; weight: 300 kg.

Two drawings from French patents here-after attached, along with a 3V drawing (unk source) and table of the Deutsche de la Meurthe Coupe 1922 entries (*), aircraft and engine spécifications (*) (* from "The Speed Seekers" by Thomas Foxworth):

 

[Stargazer]

Awesome find!

 

[Avimimus]

It is interesting to think that Charles Nungesser almost lost his life to this design...

 

[hesham]

Thank you my dears very much,

and a surprise,the Bleriot company had a project like this,may be a fighter,
did anyone hear about it before ?.

 

[c460]

Great find.
The first patent can be found there at Espacenet:
http://worldwide.espacenet.com/publicationDetails/originalDocument?CC=GB&NR=196937A&KC=A&FT=D&ND=&date=19230830&DB=&locale=en_EP
I think that the other drawing in the first post is a modern reconstruction.

Adrien

 

[hesham]

Thank you my dear C460.

 

[hesham]

From Onera Archive,

Mr. Landwerlin also designed an Autogyro in 1928 ?.

 

[hesham]

From TU 217.

 

[riggerrob]

American engineer Jim Marske eventually made that forward-swept configuration work on his Pioneer and Genesis amateur-built sailplanes.
Because of aero-elastic diversion, forward-swept wings always need to be built with greater torsional strength, equalling greater empty weight.
Marske also pioneered the use of pull-truded carbon rods to increase strength without increasing weight.