Adolphe Lachassagne Aircraft

[Tophe]

Still in this Trait d'Union #217 is the wonderful tandem-wing Lachassagne family and also:
"Jacques Lagarde designed in 1936 with Richard a project of transoceanic airplane with 'controlled lift'. The wing featured (uneasy to translate!) 'des volets de courbure commandés par des girouettes Constantin' controlling Cz in flight. Span 62m Length 40m Total weight 105t with 15t load Power 15,600hp total Max speed 440km/h Range 8000km. The same Lagarde designed the Millet-Lagarde ML.10 twin-boomer after 1945."

 

[hesham]

Still in this Trait d'Union #217 is the wonderful tandem-wing Lachassagne family and also:
"Jacques Lagarde designed in 1936 with Richard a project of transoceanic airplane with 'controlled lift'. The wing featured (uneasy to translate!) 'des volets de courbure commandés par des girouettes Constantin' controlling Cz in flight. Span 62m Length 40m Total weight 105t with 15t load Power 15,600hp total Max speed 440km/h Range 8000km. The same Lagarde designed the Millet-Lagarde ML.10 twin-boomer after 1945."

And here is from Aerophile magazine.

 

[hesham]

Hi,


here is the Lachassagne AL-1 of 1912 and AL-2 of 1923 light tandem wing
aircraft,he complete his series up to AL-7.


http://gallica.bnf.fr/ark:/12148/bpt6k6554755d/f13.image.r=l%27a%C3%A9rophile.langFR

 

[avion ancien]

Here's a photograph of the AL.1 of 1912 (from l'Aérophile, May 1935). Both the three view drawing and the photograph of the model, posted by Hesham, are of the AL.2 of 1923.

 

[hesham]

Thank you Avion,


I knew that the AL-1 was appeared in 1912 and AL-2 appeared in 1923.

 

[hesham]

Hi,


here is a Lachassagne aircraft drawing,but I don't know AL-? designation.


Flugsport 1925

 

[avion ancien]

here is a Lachassagne aircraft drawing,but I don't know AL-? designation

I think that it is the AL-3 of 1925

 

[hesham]

Thank you my dear Avion.

 

[hesham]

My dear Avion,

please see.

 

[hesham]

Hi,

Mr. Adolphe Lachassagne began in 1912/13 to built a tandem
wing airplane,called AL-1,and described as "automatically
stable",followed by a AL-2 in same concept,the AL-3,AL-5 & AL-6
were a single seat low-wing ultra-light monoplanes,but
with different engine,AL-7 was a tandem wing in new shape.

A little known about AL-4,it was probably based on AL-3,but
powered by one 25 hp Anzani W engine,and got an accident,
the AL-8 was developed from AL-7,with a tandem two-seat in
enclosed large cabin,remained a Project only.

https://www.hippocketaeronautics.com/downloads/HC&M3.pdf
TU 217

 

[Retrofit]

Lachassagne AL-5 & AL-7
(source: "L'aviation légère en France 1920-1942" by Roger Gaborieau, Bleu Cliel Diffusion 2014.

 

[burunduk]

Doesn't anyone know the year of AL-7's first flight?
Thank you in advance.

BTW, in 1946 this aircraft was mentioned as "new":

Sympathique Lachassagne // Les Ailes. 1946. № 1079. P. 13.

 

[riggerrob]

Noting the proximity of wing tips on the AL-7 and AL-8 ... was he hoping to cancel out wing tip vortices?
... like the latest tordoidal propellers recently introduced for motor-boats?

 

[hesham]

.Doesn't anyone know the year of AL-7's first flight?
Thank you in advance.

BTW, in 1946 this aircraft was mentioned as "new":

Sympathique Lachassagne // Les Ailes. 1946. № 1079. P. 13.

My dear Burunduk,

it's 10 September 1945.

 

[Retrofit]

Please note that the Lachassagne AL-7 n°1 (F-WBBN) is now preseved by the Musée Régional de l'Air at Angers, France.
Photo: Pierre Caillaud, published in the "Magazine Espace Air Passion-GPPA" n°157 Spring 2024

 

[avion ancien]

I assume, Retrofit, that is an 'as was' rather than an 'as is', photograph. When last I heard, the AL-7 was dismantled in the storage hangar at Angers-Marcé. Does the magazine give a date and/or location for the photograph?

 

[Retrofit]

Indeed Avion ancien, the photo was taken at Brienne le Chateau in august 1980.
Aircraft was taken in charge by GPPA in june 2002