| 摘要 |
The present invention relates to a variable pitch type unmanned air vehicle equipped with a belt type thrust adjustment unit, which comprises: an engine unit providing a rotational force for flight of the unmanned air vehicle; the thrust adjustment unit including a driving shaft connected to the engine unit to provide a predetermined rotational force, a plurality of rotary gears receiving the rotational force of the driving shaft to rotate in one direction, and driving belts coupled to the rotary gears respectively and transferring the predetermined rotational force to a rotor arm side; a rotor unit including the rotor arm unit forming a rotating shaft rotating a propeller by a rotational force of a power transmission shaft, a pitch adjustment unit coupled to the rotor arm unit and the rotating shaft and adjusting a pitch angle of the propeller and a connection coupler connecting the propeller to a rotating shaft to drive the propeller; and a flight body unit including an engine body unit embedding the engine unit and a lower surface of the rotor arm unit, and an upper body unit coupled to an upper part of the engine body unit and housing the thrust adjustment unit and the rotor unit. The present invention can perform high efficiency combustion even with reduced fuel consumption using a driving unit having a cooling system, thereby being capable of performing long time flight. |
