基于正交试验设计的可渗透喷管参数影响规律分析  

Analysis of influence law of permeable nozzle parameters based on orthogonal experimental design

作　　者：薛玉琴 靳雨祺 关奔[1] 王革[1] XUE Yuqin;JIN Yuqi;GUAN Ben;WANG Ge(Harbin Engineering University,College of Aerospace and Civil Engineering,Harbin 150001,China)

机构地区：[1]哈尔滨工程大学航天与建筑工程学院,哈尔滨150001

出　　处：《兵器装备工程学报》2024年第9期116-121,共6页Journal of Ordnance Equipment Engineering

基　　金：国家自然科学基金项目(12002102)。

摘　　要：利用正交试验设计方法,考察喷管关键设计因素对可渗透喷管工作性能的影响。针对喷管扩张比、基础扩张比、开孔角度、孔隙率、孔径等5个影响因素,通过对正交试验结果进行范围分析和极差分析,明确各影响因素对喷管性能的影响程度排序及其显著性水平。结果表明,低海拔工作环境条件会强化可渗透喷管推力性能对模型参数的依赖性和敏感度。在所选的参数水平下,基础扩张比是影响高度积分平均比冲最显著的因素,其次为喷管扩张比,而开孔角度、孔隙率与孔径对喷管性能影响程度较小。喷管扩张比、基础扩张比、开孔角度对喷管性能的影响存在单调函数关系,但孔隙率、孔径与喷管性能不存在单调函数关系。The influence of critical design parameters on the operational performance of permeable nozzle is examined through the application of orthogonal experimental design methodology.By analyzing the orthogonal results through range and extreme difference analysis,this investigation identifies the influence magnitude ranking and significance levels of five factors—nozzle expansion ratio,base expansion ratio,perforation angle,porosity,and pore diameter—on nozzle performance.The results show that low-altitude operating environment conditions enhance the dependence and sensitivity of nozzle thrust performance on the model parameters.At the selected parameter levels,the base expansion ratio is the most significant factor affecting the average specific impulse integral,followed by the nozzle expansion ratio.Little influence on nozzle performance is exerted by the opening angle,porosity,and pore size.There is a monotonic functional relationship between nozzle expansion ratio,base expansion ratio,and opening angle on nozzle performance.However,no monotonic functional relationship is existed between porosity,pore size,and nozzle performance.

关 键 词：火箭发动机 可渗透喷管 正交试验方法 平均比冲 数值模拟 

分 类 号：V43[航空宇航科学与技术—航空宇航推进理论与工程]