CAJ | 학술논문

考虑激光束、推力器构型以及大气环境三方面因素,建立了抛物形吸气式脉冲爆震激光推力器性能预示的解析计算模型.其中,将推力室内的流场发展过程分为吸收波和冲击波衰减两个阶段,应用Sedov点爆炸理论,以等效锥形约束空间,引入单一的修正因子以反映流场的不均匀性.计算表明,其结果同现有实验数据吻合.
고필격광속、추력기구형이급대기배경삼방면인소,건립료포물형흡기식맥충폭진격광추력기성능예시적해석계산모형.기중,장추력실내적류장발전과정분위흡수파화충격파쇠감량개계단,응용Sedov점폭작이론,이등효추형약속공간,인입단일적수정인자이반영류장적불균균성.계산표명,기결과동현유실험수거문합.
Focusing on performance, the typical parabolic laser thruster was calculated, and the characteristics of laser beam, configuration of the thruster and the state of atmosphere were considered. An operation cycle was divided into two phases: the phase of laser-supported absorption wave and the phase of blast wave. By using an effective conical space and the theory of point explosion, an analytical model was obtained. Simulations showed that results from the model coincided well with the available experimental data.