Société Bertin (1955) (France)
Design begins in 1959.
- Power: BE 53/2 engine, with bifurcated front posts and a single rear nozzle
- Wing span: ~ 7.6 m
- Wing Area: 20 m²&;
- Length: ~ 13.3 m
- Height: ~4.4 m
- Landig gear: tricycle landing gear with double rear bogie wheels
- 3-side-view
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| BE 7.V.1 / 7.V.2 |
Tail Sitter |
Design begins in 1959.
7.V.1
- Wing Area: 12 m²&;
- Length: 6.3 m
7.V.2
- Wing span: ~ 7 m
- Wing Area: 17 m²&;
- Length: ~ 13.2 m
- Height: ~ 3.6 m
- 3-side-view
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| BE 8 D.V.1 |
Vectored Thrust |
Design begins in 1959. The 8 D.V.1 used essentially the 7.V.1 wing, but was a "flat-riser" (i.e., not a tailsitter),
with the engine(s) mounted well forward and exhausting at the center of gravity.
Nozzle(s) rotated the exhaust from horizontal to vertical.
- Wing span: ~ 6.1 m
- Length: ~ 14.7 m
- Height: ~4.4 m
- 3-side-view
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With assistance from STAé, Bertin built a powered model and tested it in the STAé wind tunnel.
After the initial wind tunnel testing, Bertin found it important to enlist the support of a larger aviation
design company; Breguet was enthusiastic and provided technical assistance. Maurice Hurel was also involved.
Bertin built a 14% scale powered model of the HB 11 configuration.
The engines and lift fans were expected to be developed by General Electric, based on the work they had already
conducted with Ryan for the XV-5A Vertifan, which was then under consideration. The 14% scale powered model was tested
between June 1950 and July 1960 in the 3 m diameter ONERA S3 wind tunnel.
Each fan was powered by a 10 hp electric motor, turning the fan at 10,000 rpm.
- Power: three small turbojet engines
- Fan: 2 wing fan; 2.5 m diameter
- Cruise Speed: 690 and 720 km/h
- Wing span: 19.8 m
- Length: 13 m
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| Additional Bertin V/STOL concepts |
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Bertin also studied a wide range of other V/STOL concepts, with particular interest in ejector systems that
could entrain the ambient air for additional vertical thrust.
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The engines and lift fans were expected to be developed by General Electric, based on the work they had already
conducted with Ryan for the XV-5A Vertifan, which was then under consideration. The 14% scale powered model was tested
between June 1950 and July 1960 in the 3 m diameter ONERA S3 wind tunnel.
Each fan was powered by a 10 hp electric motor, turning the fan at 10,000 rpm.
