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J. KIMS Technol > Volume 22(4); 2019 > Article
Journal of the Korea Institute of Military Science and Technology 2019;22(4):441-451.
DOI: https://doi.org/10.9766/KIMST.2019.22.4.441   
A Study on Separation Stability of The Umbilical Plug of A Store
Yongil Kim
The 1st Research and Development Institute, Agency for Defense Development
발사체의 배꼽 플러그 분리 안정성 연구
김용일
국방과학연구소 제1기술연구본부
Abstract
When a store is launched, the umbilical plug should be separated from the launcher without any physical interference and fragments. In order to satisfy these conditions, an umbilical plug and an umbilical separating device were designed. The plug is separated from the receptacle of the store while moving along inclined planes by the store thrust and the spring force connected from the launcher to the plug. As a result of the prototype test, the hanger on the store collided with the plug. Several tests were conducted after some actions were taken to prevent the collision. However, not only the same phenomenon was repeated, but also fragmentation occurred. In this study, the non-colliding conditions were analyzed through rigid and flexible multi-body dynamics analysis.
Key Words: Umbilical Plug, Separating Device, Collision, Fragment, Multi-Body Dynamics Analysis


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