Hi,
in 1937,Mr Boulet designed a commercial experimental Stratosphere single-engined aircraft,and had estimated speed of 500 km/h,ceiling 16500m and could fly at 15000m ceiling for 17 hours,followed by a twin engined military experimental stratosphere aircraft,and had estimated data as365 km/h speed and ceiling 18000m and could remained flying at 13700m ceiling for 8 hours.
In 1933,he created a fighter-canon project,was a monoplane with low-wing,which this aircraftground speed was 400 km/h,and the speed was 440 km/h at ceiling of 4000m, was characterized by the position of the HS-12 motor-canon to the right of center of gravity in the middle of the
fuselage.The propeller, at the front, is driven by a large diameter shaft; this fact, the gyroscopic and tensile forces are received by a bearing independent of the engine that no longer transmits torque,
the machine is a domestic driving.
The fighter data,as in google translate,and I can't imagine its shape,what it looks like ?.