螺旋桨
叶片节距
预付款比率
推进
变量(数学)
航程(航空)
海洋工程
机身
空气动力学
流入
高度(三角形)
涡轮螺旋桨
推进效率
航空航天工程
声学
工程类
物理
气象学
数学
涡轮机
数学分析
几何学
作者
Wang Dongchen,Bifeng Song,Jun Jiao,Xue Deng
标识
DOI:10.1177/09544100231167710
摘要
To achieve better propulsion performance for high-altitude airships, this paper proposes a variable-pitch propeller design and performance analysis. Propeller surrogate models were constructed based on an in-house fluid–structure solver and validated by a wind tunnel experiment. Based on the surrogate model, this paper studied propeller performance under the common influence of propeller pitch variation and rotational speed, and proved the positive effect of the variable-pitch propeller on maintaining relatively high efficiency in large rotational speed range. This paper compared the performance of variable-pitch propellers and fixed-pitch propellers under the constraints of the motor. The results show that introducing variable-pitch propellers to high-altitude airships can significantly improve propeller performance at multiple altitudes and laminar wind speeds. And the potential of airship weight reduction brought by the variable-pitch technique is discussed as well.
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