论文标题
板和机翼屏蔽转子噪声
Shielding of rotor noise by plates and wings
论文作者
论文摘要
下一代飞机提出的一种降噪方法是通过将噪声源定位在机翼或其他表面上，以屏蔽推进系统。在本文中，对远离半i-Infinite板边缘的圆形源的声场进行了近似分析，这是一个模型问题，用于通过机翼屏蔽噪声以及通过后缘散射噪声。该近似是针对小半径源开发的，并且与对场的全数评估相比，发现准确是准确的。
A method of noise reduction proposed for the next generation of aircraft is to shield noise from the propulsion system, by positioning the noise source over a wing or another surface. In this paper, an approximate analysis is developed for the acoustic field far from a circular source placed near the edge of a semi-infinite plate, a model problem for shielding of noise by a wing and for scattering by a trailing edge. The approximation is developed for a source of small radius and is found to be accurate when compared to full numerical evaluation of the field.
