Little-Known French Projects and Prototypes

[Tophe]

Well, I took my old T.U. collection to gather twin-boom projects but I am glad to find another pearl:
From the same Trait d'Union #207: "In 1934, Pierre Gemy designed a machine that was not intended to fly but only to learn. What was called at that time a "roller" (? "rouleur" in French). When speed is high enough, only the main wheel supports the machine, with balance controlled by the pilot. Wing of 6m x 1m. Empty weight 150kg. Engine Harley of 14 or 15hp. Not finished in 1936. Actual rolling not confirmed."

[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."

[lark]

Once again ,a breathtaking contribution Tophe...
Many thanks.

[Tophe]

(The search does not find this)
Pierre Dubs in 1937 designed a glider with "living wing" using "girouettes Constantin"
(source: Trait d'Union #194 Nov-Dec 2000)

[Tophe]

(The search does not find this)
(source: Trait d'Union #194 Nov-Dec 2000)

As well:
A. Dujardin designed during WW2 a giant flying boat of 250t with turbojets (4 for lift and 4 for speed). Length 127m Span 106m.

[Tophe]

During WW2, the French engineer De Lazarieff designed a twin-engine aircraft to carry passengers or for training.
Span 13.25m Length 9.92m Height 3.95m Weight empty 1,625kg total 2,500kg Engines 2x 240hp Maximum speed 320km/h
Source: Trait d'Union #217 Sep-Oct 2004

[James]

Very interesting Tophe. I would love to read a bit more about that turbojet flying boat mentioned above. Would the position of the lift jets be practical?

[Tophe]

(The search does not find this)
(source: Trait d'Union #194 Nov-Dec 2000)

As well:
A. Dujardin designed during WW2 a giant flying boat of 250t with turbojets (4 for lift and 4 for speed). Length 127m Span 106m.

I add the engines drawings. And I gave one line summary from 19 lines detail. I could translate more, but it is very technical, and I lack English vocabulary. I try.
"For speed, blades had 4.5m diameter and hubs: 3m. Blades were driven by a turbo motor located in the hub and working like a steam turbine but with air at pressure 12kg and 500°C. This air is provided by an engine room located in the hull. These propellers are adjustable around the vertival axis.
In the wings depth, were lift propellers of 10m diameter for take off, so it was able to take off from land. All this mechanical engine parts were weighing 60t, with a power of 140,000hp! Range 10,000km in 24 hours.
A reduced size model had been tested in 1937, as a 2.66m span model that was an air tubine with wings and a boom holding a tail. These tests were performed at Issy les Moulineaux in the Etablissements d'Etudes Techniques du Ministère de l'Air. The full-size air-jet project was not built."

[hesham]

Hi,

my dear Maveric spoke before about some French projects from WW1,and I
found an info for two of them,first,the Bassan-Gue BN.4,it was triplane
bomber project powered by three 450 hp Renault engines,and the second,
the Bille SACANA triplane bomber project,which was studied in three versions,
projects are provided with six (400 hp Lorraine or 400 hp Liberty) engines,and
the third one was a heavy bomber equipped by 700 hp SANA engines.

[hesham]

What was those projects from Couse Pratique d-Aviation?.


http://translate.google.com/translate?sl=fr&tl=en&js=n&prev=_t&hl=ar&ie=UTF-8&eotf=1&u=http%3A%2F%2Fpages14-18.mesdiscussions.net%2Fpages1418%2Faviation-1914-1918%2Fidentification-trimoteur-bifuselage-sujet_913_1.htm

[c460]

What was those projects from Couse Pratique d-Aviation?.

Most probably these are not actual projects, but sketches illustrating various engine placements on 3 and 4-engine aircraft.

The book title means "Practical Aviation Course". The text on 3 and 4-engine aircraft reads: "Three-engine aircraft do not have this defect to the same degree ; the engines are usually distributed as two engines mounted on the side and one mounted on the aircraft axis. Four-engine aircraft are still rare. The most frequent type has the engines mounted by pairs on the same axis, one with the propeller at the front and the other with the propeller at the rear."

[hesham]

Thank you C460.

[hesham]

Hi,


mysteries in that French George Messier's site,unknown projects;
http://www.acam.asso.fr/histo/premiers_equipements6.php

Morane-Saulnier MS-080
SNACSO E-3635
SNACSO SO.1060
Arsenal AEA 16800
LeO 40-C-30  (I know only C.41)
Wibault-Penhoet 700
Roussel 20
Schreck (FBA) 330
Levasseur PL-109

[toura]

Hi Hesham
Here is the Roussel 20

[Maveric]

Wow toura, great!!!!