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基于被广泛应用的 Peters-He有限状态动态尾迹模型 ,本文提出了一种增强的非线性、非定常的旋翼尾迹模型 ,并混合王氏涡流理论建立了旋翼尾迹的旋转分量计算模型 (桨尖轨迹平面处 )。将原来的线性动态入流理论改造为非线性理论模型 ,并取消了计算影响系数矩阵中的小角度假设。增强后的诱导速度模型适合计算低速飞行状态下旋翼平面内诱导速度 ,理论计算结果和实验值吻合较好。经优化的 FORTRAN程序在常规单 CPU微机系统中即可实现实时计算
Based on the widely used Peters-He finite state dynamic wake model, this paper proposes an enhanced nonlinear and unsteady rotor wake model, and combines the Wang’s eddy current theory to establish a rotational component calculation model of rotor wake (tip trajectory Plane). The original linear dynamic inflow theory is transformed into a nonlinear theoretical model and the small-angle hypothesis in calculating the influence coefficient matrix is canceled. The enhanced induction velocity model is suitable for calculating the induced velocity in the rotor plane under low flight conditions. The calculated results are in good agreement with the experimental ones. Optimized FORTRAN program in the conventional single-CPU microcomputer system to achieve real-time computing