This is design Aerodyne 113 revisited.
A simple yet powerful engine can propel an aircraft to intercept enemy intruder or bomber aircraft. Little ramjets in the tips of the blades can move a propeller without a power applied to his shaft. So no internal combustion engine is needed to move the propeller and no torque is applied. Fuel must be pumped to each blade tip where the powerful ramjets are located. Large internal volume and weight of the aircraft is thus free to store more kerosene fuel, in order to feed the ramjets.
Two large, powerful Rocket-Assisted Take-Off units under the wings allow a rapid take-off and ascension to interception altitude; when his propellant are exhausted, both units are discarded and are recovered by parachute.
The very simple engine is composed of a mechanical fuel pump geared to the propeller shaft, in order to pump the fuel from the tanks to the hub fuel distributor. A combined starter and emergency device can rotate the propeller (and move the geared fuel pump); this device has a gas turbine inside. Powder cartridges can be fired to start moving the propeller, so the ramjets move admitting air and the pump starts moving the fuel to the propeller hub. The centrifugal force aids the fuel to reach the burners inside the ramjets. In case of ramjets flame-out, emergency rotation movement can be done through the device by burning large solid fuel cartridges of greater burning time than the starter cartridges. This emergency power can be used to augment the thrust during combat or in case of flame-outs. Or can be used to land under power in case of fuel exhaustation or ramjets damage. Nitrogen pressurized tanks are used to pressurize the kerosene tanks and force the fuel to reach the pump.