The acoustic noise generated by the rotate point source, UH-1H rotor in hover and AH-l/OLS in forward flight were calculated, and the computed results from several methods were compared with each other and with the experimental data.

• 采用旋转点源、UH-1H悬停旋翼、AH-1/OLS前飞旋翼作为算例，对所采用的各种噪声预测方法进行了比较。