论超声速流动中的有益干扰

On the Favorable Interference in the Supersonic Flow

本文利用三维超声速流动线化理论的积分特性,推出了点源分布和单元旋涡分布的积分关系公式,并利用它们分析了翼下有体,翼上有体和翼的上、下各有一个体等型式的干扰特点,指出了几种可能的有益干扰型式。

Two integrated relations of the singularity distribution are derived with the integrated property of three dimensional supersonic flow. First formula is the integrated relation for source distribution. The special case of first formula is the result obtained by Ferri A. in reference (1) about favorable interference in the supersonic flow. Second formula is the integrated relation for elementary vortex distribution. The problem of interference of singularity distribution in space is studied with these formula. The interference characteristics for the body under the wing, the wing under the body, one body under the wing and one body over the wing are analyted. The phenomena of favorable int erferencein thesupersonic flow are analysed in all-sidedly.Several possible type of the favorable interference are pointed out.