ENGINE COOLING SYSTEM FOR UNMANNED HELICOPTER

摘要

PURPOSE: An engine cooling system for an unmanned helicopter is provided to prevent the overheating of a rotary engine implementing high-speed rotation of a rotor. CONSTITUTION: An engine cooling system for an unmanned helicopter comprises a rotary engine(110), a generator(130), a cooling fan(140), a water pump(150), and radiators(161,162). The generator comprises a generator rotary shaft which is coaxially connected to the output shaft of the rotary engine. The cooling fan comprises a cooling fan rotary shaft which is coaxially connected to the generator rotary shaft. The water pump comprises a water pump driving shaft which is coaxially connected to the cooling fan rotary shaft. The radiators are connected between the water jacket of the rotary engine and the water pump. Cooling water circulates with the drive of the water pump successively through the water pump, the radiators, and the water jacket of the rotary engine. Exterior air is drawn in through the radiators with the drive of the cooling fan and cools the engine cover of the rotary engine.