悬停状态大拉力情况旋翼功率计算经验修正系数确定方法

The Method to Determine the Empirical Correction Coefficients for Rotor Required Power Calculation Under Large Thrust in Hover

首先根据经典组合动量理论和叶素理论推导了悬停状态旋翼拉力和功率计算公式,然后基于旋翼塔悬停性能试验结果,采用优化方法确定经验修正系数和一些气动参数,克服经验修正系数选择的随意性,提高悬停状态大拉力情况旋翼需用功率的计算精度。

First,the formula of thrust and power coefficient was provided according to momentum theory combined with a blade-element method.Then,the empirical correction coefficients and some aerodynamic parameters were determined by optimization on the basis of rotor tower testing results.The aim was to solve the question for selection of empirical correction coefficients and some aerodynamic parameters according to personal opinion,and to improve the calculation precision of rotor required power under large thrust in hover.