Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Numerical Analysis and Simplified Mathematical Modeling of Separation Mechanism for the Ball-type Separation Bolt

볼타입 분리볼트 분리 메커니즘의 수치해석 및 간략화 모델링

  • Hwang, Dae-Hyun (School of Mechanical and Aerospace Engineering, KAIST) ;
  • Lee, Juho (School of Mechanical and Aerospace Engineering, KAIST) ;
  • Han, Jae-Hung (School of Mechanical and Aerospace Engineering, KAIST) ;
  • Lee, Yeungjo (The 4th R&D Institute - 1st Directorate, Agency for Defense Development) ;
  • Kim, Dongjin (Energetic Materials & Pyrotechnics Department, Hanwha Corporation R&D Institute)
  • Received : 2015.12.01
  • Accepted : 2016.05.09
  • Published : 2016.06.01
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Abstract

The pyrotechnic separation devices are widely used in space systems and guided weapons during the launching and operations, however, they generate intensive pyroshock and fragments that can cause critical damages or the malfunction of electric devices onboard. There have been proposed many types of alternative devices to avoid pyro-induced problems since 1960's. A ball-type separation bolt is the one of alternative Pyrotechnic Mechanical Devices (PMD). In this study, the detail separation behavior of the ball-type separation bolt is analyzed using ANSYS AUTODYN. A simplified one-dimensional mathematical model, consisting of a combustion model and 5-stages of differential equation of motions, is also established to effectively describe the entire separation process.

파이로테크닉 분리장치는 우주시스템과 유도무기의 발사 혹은 임무 중에 다양하게 활용되나, 큰 파이로 충격과 파편을 발생시켜 구조와 전자장비에 치명적인 손상을 야기할 수 있다. 이러한 문제를 해결하기 위해 1960년대부터 다양한 대체 작동기에 대한 연구와 개발이 수행되어왔다. 본 연구에서는 Pyrotechnic Mechanical Device (PMD) 중 하나인 볼 타입 분리볼트에 대해 ANSYS AUTODYN을 사용한 동적 분리거동 해석을 수행하였다. 그 결과를 바탕으로 5단계의 분리단계 모델링을 수행하였으며, 연소모델과 1-D로 단순화된 부품의 상호작용에 대한 연립방정식으로 구성된 수학적 모델을 설립하였다.

Keywords

References

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