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由三维自由尾迹非定常板元方法计算的三元非定常气动力出发，计算直升机旋翼桨涡干扰噪声。用飞行实验和风洞实验数据分别对计算的旋翼在前飞和前飞下滑状态下的声压时间历程以及其它计算结果进行考核，某些结果还与著名的ＷＯＰＷＯＰ程序计算的结果进行了比较。理论计算与飞行实验和风洞实验结果吻合较好
Based on the ternary unsteady aerodynamic force calculated by the three-dimensional free-wake unsteady plate element method, the helicopter rotor blade vortex interference noise is calculated. Based on the flight experiment and the wind tunnel experiment data, the computed sound pressure time history and other calculation results of the rotor before and during the previous flight are respectively evaluated. Some results are also compared with those calculated by the famous WOPWOP program. The theoretical calculation is in good agreement with the flight experiment and the wind tunnel experiment