Optimal Design of Solid Propellant Grain Using Hybrid Optimal Technique
The most important part of the solid rocket motor(SRM)is the design of the propellant grain.A thrust profile is one of the main design considerations and it has been given in various forms according to the mission.The propellant grain charged into the combustion chamber should be designed according to the thrust profile and it has been modified according to changes on requirements.Design of the propellant grain should consider many variables based on the overall rocket system.For the redesign process of the propellant grain,therefore,the optimal design of the propellant grain is needed during the design process for the reduction of time and cost.In this study,a study for the optimal design of the propellant grain satisfying the object thrust profile has been conducted.The hybrid optimization technique using genetic algorithm and Nelder-Mead simplex method has been investigated.For the performance prediction of the SRM,the grain burn-back analysis module and the internal ballistics analysis module have been used.The thrust profile has been calculated through the internal ballistics analysis.The optimization has been determined by the comparison of the results between calculations and the object performance.If the calculated performance is not satisfied with the requirements,the iteration has been conducted by the adjustment of the design variables of the propellant grain.Through this process,the grain configuration satisfying the requirements has been derived.As a result,the hybrid optimization technique has been proven to be an efficient method for the propellant optimal design.
Propellant Grain Hybrid Optimization Technique Optimal Design Thrust Profile
Seok-Hwan Oh Jin-Sung Jang Sang-Bok Lee Ji-Hyun Sohn Tae-Seong Roh
Aerospace Engineering,Inha University,Korea Faculty of Aerospace Engineering,Inha University,Korea
国际会议
2014 Asia-Pacific International Symposium on Aerospace Technology(2014亚太航空航天技术学术会议)
上海
英文
1-8
2014-09-24（万方平台首次上网日期，不代表论文的发表时间）