【摘要】 高超声速条件下,乘波体布局具有高升阻比特性,本文应用单纯形加速法,以最大升阻比为目标,开展了锥形流乘波体布局优化设计研究。特别是,研究了在高层大气飞行时雷诺数效应与气动特性的关系,从乘波体飞行高度与设计长度两方面探讨雷诺数对乘波体优化的影响,结果表明:给定设计马赫数和圆锥角情况下,对于最大升阻比优化乘波体,其雷诺数越小,摩擦阻力越大,而升阻比越低。更多还原

【Abstract】 The hypersonic waverider has characteristics of higher lift over drag ratio.This paper is concerned with waverider optimized design,the object function was lift over drag ratio,viscous optimized process was completed by Nelder and Mead’s method,Altitude and design length that determined the Reynolds number was discussed in the optimized process of waverider,The result is: Reynolds number is smaller,coefficients of friction drag is larger,and lift over drag ratio is smaller.更多还原