Marcel Riffard projects

some great French engineer Marcel Riffard unbuilt projects from Magazine Avion but original source is Aero France


1. Stratosferic transatlantic airliner from 1942. 40 passenger. Max speed: 700 Km/h.

2. VTOL aircraft (1942?). Power for the rotors is transmitted from a turbine in the fuselage. The rotors has telescopic blades

3. Twin Jet from 1942. Unknown 1030 Kg powerplants. 14'5 m span. 7,2 lenght. Total weight: 7200 Kg. Max speed: 918 Km/h

Riffard's rocket powered interceptor from 1917

1. Profile

2. Powerplant detail

pometablava said:

Riffard's rocket powered interceptor from 1917

1. Profile

2. Powerplant detail

Click to expand...

Hi,


http://modelscale.free.fr/analyses/MS2003_4P/SCRH_RM1/index.html

By the way,


the Jet engine aircraft,called Machine P,and the transport aircraft was called
Machine T.

And there drawings again,

Hi,


here is a strange patent design for Riffard,with a retractable landing gear
in 1932.


http://gallica.bnf.fr/ark:/12148/bpt6k6553675h/f55.image.r=l%27a%C3%A9rophile.langFR

hesham said:

here is a strange patent design for Riffard,with a retractable landing gear
in 1932.

http://gallica.bnf.fr/ark:/12148/bpt6k6553675h/f55.image.r=l%27a%C3%A9rophile.langFR

Click to expand...

Via my dear Tophe,


this was a real Riffard Project,and called MR-300.


TU magazine

I would feel awfully dubious about having rocket engines so close to my stretched canvas skin!

hesham said:

Hi,


here is a strange patent design for Riffard,with a retractable landing gear
in 1932.


http://gallica.bnf.fr/ark:/12148/bpt6k6553675h/f55.image.r=l%27a%C3%A9rophile.langFR

Click to expand...

Hi !

Here a little drawing of the projeted R.300 published on Fana de l'aviation (1982-83, I don't remember). The engine was 8 flat cylinders (double flat four ?) Chaise. Modelers made it for pylon racing ...

@+++

Tonton

Thank you Tonton,


but that is not the same aircraft,the Riffard-Otfinovsky MR-300 was different from Caudron-Renault R-300,and the R-300 developed from it.

Hi,

as I know,Riffard had a racer airplane Project of 1930s,but no more details.

Hi,

Also Riffard designed a light bomber Project in 1934,looks like his racer airplanes in
its configuration.

From Ailes 12/1946,

a more details.

From Ailes 17/11/1951.

hesham said:

Also Riffard designed a light bomber Project in 1934,looks like his racer airplanes in
its configuration.

Click to expand...

Some of its data;

it had a span of 20m,range 1800 km,altitude 5000m and estimated maximum speed of 225 km/h.

From Avions 232.

Looking at the design of Machine P, as Hesham revealed it was called, is it me or does it look like it might utilise a prone pilot position? I thought, I'd clean up the three view

By the way Hesham, looking at the article it says that the transport design is actually designated Machine C. Here's that one cleaned up, well the profile anyway!
Thinking about it, perhaps there was a hint of americanisation as it were, utilising the letter P for a fighter (Pursuit) and C for a transport?

In regards to the 1932 patent, as posted previously by Hesham, here's a direct translation. (Apologies to any french speakers!)
'Improvements to air navigation equipment.
Mr Marcel Riffard
Deposited on March 8, 1932.
The subject of the invention is improvements to air navigation devices, which improvements consist mainly of establishing the said navigation devices in question, at the same time as constituting their fuselage by a portion of wing whose cross section preferably a symmetrical biconvex profile, whose lift increases with the angle of attack for commonly used values;
To have the wing, having a profile, preferably symmetrical biconvex, substantially along the plane of symmetry of the fuselage and in such a way that it makes with the fuselage an angle such that the latter moves, in flight under the angle for which its lift and cloud, therefore its minimum drag;
To fix the wings (longitudinal stabilization members) constituted by a single spar and a sheet coating of light alloys with high resistance, on the fuselage in three points being with play so as to allow the adjustment of these wings compared to the fuselage;
To make the landing gear, of the independent wheel type, fully liftable, and retractable fully in the fuselage;
To ensure the cooling of the engine by air circulation on either side of the propeller in the leading edge in the region of highest dynamic pressure and of air outlet orifices on each of the faces of the fuselage in places subjected to equal depressions of the appropriate deflectors giving an outlet direction to the outgoing air currents substantially parallel to the direction of the outside air circulating on the upper surface and the lower surface of the fuselage;
To have the gas exhaust pipes of gas from the engine in the engine's cooling air exit holes, so as to take advantage of the depression.'
Basically it looks like the patent is not only for an aircraft with a retractable undercarriage, but that it also utilises some kind of pivoting wing, perhaps in the manner of the F-8 Crusader. Instead of the wing pivoting on the top of the fuselage, it pivots on the side, dependant on the need at the time. Also from the description of hot air gases etc, I may be guessing here, but that sounds like some kind of blown air system a la YC-14 and YC-15 perhaps.

From Aviation magazine Inter. 1969 (5323192),

a strange Project in 1912.

From Pegase 1994,

with some details.

A hint of his activities;

- At the beginning of his career, he created a model of circular flight with
an electric motor.

- In 1913, he designed a streamlined bicycle which broke the hour record.

- At Bréguet, he worked on engine cooling and directed the development
of the Rateau turbocharger fitted to the Bréguet 14 at the end of the First
World War.

- He designed and built a light rocket interceptor in 1917, but he could
not find suitable rockets.

- He designs the four-engine "Leviathan" and, in particular, its circuit
breaker that drives the single propeller.

- At de Monge, in 1924, he designed a three-engined transatlantic
aircraft with a habitable wing. A flying model gives excellent results,
but the final device cannot be built due to the disappearance of the
firm.

- Regarding light fighters, he takes a patent relating to the installation
of weapons in the airfoil.

- During the occupation, Marcel Riffard designed a twin-reactor with
very modern lines. Later, he also studied a vertical take-off plane.

- He's making a foray into the car business. The Panhard of the
Chancel brothers, whose shapes he designed, won the 1953 24 Hours
of Le Mans on the performance index. For the first time in the world,
a 750 cm exceeded 200 km / h at Montihéry in 1954.
- Marcel Riffard also worked on the atom and gaseous diffusion.

Hi,

hesham said:

Hi,

27 - Le projet d'avion transsonique de Marcel Riffard le ROB "Gamma" - Le bloc-note de aerophile

Le ROB "GAMMA". Jacques MOULIN (AGPPA) Le projet que nous allons vous narrer aujourd'hui est dû au célèbre aérodynamicien Marcel Riffart et l'étude, la construction tous les composants tout comme les moteurs, étudiés par Rateau, devaient être strictement...

aerophile.over-blog.com

Click to expand...

In the site,there was a French attempt to break the sound barrier in 1947,
but the aircraft was never built.

From Pionniers 1982.

Marcel Riffard has a very rich carreer. I attach one of its first realization in 1912 with Martinet and Legagneux: the Aéro-Torpille MLR.
The other photo shows one of his last ones: the fairing of the Super Frelon c/n 001 for breaking the helicopter world speed record.
In between, he worked with Breguet, Eiffel, Tellier, Sablon, De Vizcaya, De Monge, Lioré et Olivier, Bloch, Chaise, Caudron-Renault and Rateau. This list is certainly not complete.

One of his many projects, while he was working for Chaise around 1931-32.