平流层飞艇螺旋桨初步设计方法

摘要

In order to design propeller for stratosphere airship, the blade element efficiency is analyzed to fix the range of design parameters based on blade element theory, and a flow of the primary design for stratosphere airship propeller is given. It is found that the pull of the propeller blade can be enlarged either through increasing the circumferential velocity at the tip of the blade or widening the blade, and efficiency of the blade can be improved either through decreasing the circumferential velocity at the tip of the blade or widening the blade.%为设计出适用于平流层飞艇的螺旋桨,在叶素理论的假设下,通过分析叶素效率确定设计参数的取值范围,给出了平流层飞艇螺旋桨的初步设计流程.研究发现,在其他条件不变的情况下,提高桨叶拉力的方法有提高叶梢的周向速度或增加桨叶宽度;提高桨叶效率的方法包括降低叶梢的周向速度或增加桨叶的宽度.