Measurement method and results of divergence angle of laser-controlled solid propellants used in space propulsion  

作　　者：Yang OU Jianjun WU Yuqiang CHENG Yu ZHANG Yuqi LI 

机构地区：[1]College of Aerospace Science and Engineering,National University of Defense Technology,Changsha 410073,China

出　　处：《Chinese Journal of Aeronautics》2023年第9期195-206,共12页中国航空学报（英文版）

基　　金：This study was co-supported by the Innovative Research Groups of the National Natural Science Foundation of China(No.T2221002).

摘　　要：The plume divergence angle is an important reference index for evaluating the thrust efficiency and propellant utilization of space propulsion systems.However,the characteristics of the dynamic variation of plume divergence angle over time cannot be measured using current methods.This paper utilizes high-speed photography and image processing methods to develop a strategy that can give a quick,non-destructive and real-time detection of the divergence angle.Effectiveness of the strategy is verified,and the characteristics of plume divergence angles of different lasercontrolled solid propellants were further analyzed and fitted.The experimental results indicate that graphene could effectively reduce the divergence angle,while oxide-doped samples had larger divergence angles than alloy-doped and carbon-doped samples.

关 键 词：Ablation Image processing LASER Plume divergence angle PROPELLANT Space application 

分 类 号：V512[航空宇航科学与技术—航空宇航推进理论与工程]