航空二冲程活塞发动机与定距螺旋桨的匹配研究
Method for match of two-stroke piston engine and set propeller
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摘要: 以长航时无人机的工作特点为基础,结合二冲程发动机的功率输出特性和定距螺旋桨的功率吸收特性,以及发动机的外特性曲线和螺旋桨的推进特性曲线,得出了在地面飞行状态下二冲程活塞发动机匹配定距螺旋桨所采用的方法,并通过为某型二冲程发动机匹配最优定距螺旋桨的试验,证明了该方法可以应用于在地面及低空状态下,为已知发动机匹配合适的定距螺旋桨.Abstract: Based on the working characteristics of the long-endurance UAV(unmanned aerial vehicle),and in combination with the power output characteristics of the engine and the power absorption characteristics of the set propeller,as well as external characteristic curve of the engine and propelling characteristic curve of the propellers,the method for matching of set propeller of the two-stroke piston engines was presented.This indcates that this method can be employed practically to select most suitable set propeller for one two-stroke engine under the conditions of ground and low altitude.
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