侧向喷流的气动增益特性研究

本文实验研究了一种弹翼身组合体构型在亚、跨、超声速，不同动量比以及不同喷口布局条件下的侧向喷流气动增益情况。给出了来流马赫数、喷流动量比、喷口布局等对增益特性的影响。结果表明，马赫数和喷口布局对增益特性均有显著影响，但本文定义的增益因子却基本与动量比无关。此外，对比分析了单独体构型和翼身组合体构型增益特性的差异，进一步揭示了主流、喷流在二者相互作用中的地位和影响。本文结果对认识侧向喷流干扰特性、气动增益、开发高效喷流姿态控制技术等有一定参考意义。

A study of gas dynamic gain performance of lateral jets

An experimental study is made in this paper on lateral jet gasdynamic gain performance over a missile-like wing-body configuration at tri-sonic regimes,various jet-momentum ratios,jetting nozzle geometries,and vehicle configurations. Influences of the various factors are presented on the jet gasdynamic gains. Results show that the effects of incoming Mach number and the nozzle geometry are pronounced, while the jet-momentum ratio has little affects on the gains defined here. Moreover, a comparative analysis has been conducted to the gain differences between a bold-body and the wing-body studied here which, furthermore, depicts the dominating roles of main-stream and jet in their interactions.It is believed that the present study is significant and meaningful for further exploring lateral jet interferences and gasdynamic gain performance, and developing high-effective control means using lateral jet.