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논문 기본 정보

자료유형
학술저널
저자정보
Seung-gyo Jang (Agency for Defense Development) Hyo-nam Lee (Agency for Defense Development) Jong-yun Oh (Agency for Defense Development)
저널정보
한국항공우주학회 International Journal of Aeronautical and Space Sciences International Journal of Aeronautical and Space Sciences Volume.15 Number.1
발행연도
2014.3
수록면
102 - 111 (10page)

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초록· 키워드

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An analytical model was developed to understand the physics and predict the functional performance of a pin puller. The formulated model is based on one-dimensional gas dynamics for an ideal gas. Resistive forces against pin shaft movement were measured in quasi-static mechanical tests, the results of which were incorporated into the model. The expansion chamber pressure and the pin shaft displacement were measured from an actual firing test and compared to the model prediction. The gas generation rate was adjusted by a correction factor, and the heat transfer rate was obtained through parametric analysis. The validity of the model is assessed for additional firing tests with different amounts of pyrotechnic charge. This model can provide knowledge on how the pin puller functions, and on which design parameters contribute the most to the actuation of the pin puller. Using this model, we estimate the functional safety factor by comparing the energy generated by the pyrotechnic charge to the energy required to accomplish the function.

목차

1. Introduction
2. Mathematical Model
3. Experiment
4. Results
5. Discussion
6. Conclusions
References

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UCI(KEPA) : I410-ECN-0101-2015-550-001318238