Four-Stroke Single-Cylinder Rotary Valve Internal Combustion Engine M-9 for Aircraft

The engine with calibre ignition is designed for light and ultralight manned and unmanned aircraft equipped with propeller or fan propulsion. Maximum rated power - 41.3 hp (30.3 kW) at 3000 rpm on PTO Engine specific gravity - 0.32 kg/hp. Estimated average specific fuel consumption - not more than 200 g/hp/h at cruising mode.

Engine volume - 490 cm3 (cylinder diameter 88 mm, piston stroke 80 mm), valve bore diameter 32 mm. Fuel - methyl alcohol (60%), amyl acetate (6%), petrol B-70 (14%), oil MC-20 (20%). In some cases it is allowed to add no more than 5 - 10% nitromethane to the fuel.

Engine altitude - not more than 4500 m. The engine design uses only rolling bearings, which makes it possible to set the design life of the power plant not less than 2000 hours..