Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Study on Solid Propellant Grain Burn-back Analysis Using Analytical Method

Analytical Method를 이용한 고체 추진제 그레인의 Burn-back 연구

  • Sohn, Jihyun (Department of Aerospace Engineering, Inha University) ;
  • Jang, Jinsung (Department of Aerospace Engineering, Inha University) ;
  • Oh, Seokhwan (Department of Aerospace Engineering, Inha University) ;
  • Roh, Taeseong (Department of Aerospace Engineering, Inha University)
  • Received : 2013.12.11
  • Accepted : 2014.05.17
  • Published : 2014.06.01
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Abstract

The grain burn-back analysis has been performed for the internal ballistics analysis code to be used for the optimal design of the space launch vehicles. The grain burn-back has been used to calculate the burning surface that is essential to the internal ballistics. The calculation of internal ballistics code used in the optimal design is repeated until satisfying the required performance through the change of the design parameter. Therefore, the burn-back method applied to the internal ballistics analysis should be easy to change the design parameter and calculation time should be short. In this study, a burn-back analysis code has been developed using the analysis method. Also, geometric parameters of the grain have been selected and organized. The developed code has been verified by comparison of results of a numerical method.

우주발사체 최적 설계에 사용될 내탄도 해석 코드를 위한 그레인 Burn-back 연구를 수행하였다. 그레인 Burn-back은 내탄도 해석에 필수적인 그레인의 연소면적의 계산에 사용된다. 최적 설계에 사용될 내탄도 해석 코드는 설계 변수의 변경 및 반복계산을 통해 요구 성능을 만족할 때 까지 반복 계산을 수행한다. 따라서 내탄도 해석에 적용될 Burn-back 해석기법은 설계 변수의 변경이 용이하며 계산시간이 짧아야 한다. 이에 본 연구에서는 Analytical Method를 이용하여 Burn-back 해석코드를 개발하였으며, 그레인 형상에 대해 기하학적 변수를 선정 및 형상 변화에 대해 정리하였다. 개발된 코드는 Numerical Method로부터 산출된 값과 비교하여 검증을 수행하였다.

Keywords

References

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