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항공기 탑재 발사대의 발사관 장입 로켓의 로켓 장입 상태에 따른 동특성 변화 분석
정회인(Hoein Jeong),박지환(Jihwan Park),남규빈(Guebin Nam),이유경(Yukyoung Lee) 한국소음진동공학회 2020 한국소음진동공학회 논문집 Vol.30 No.5
This paper presents an analysis of a change in the dynamic characteristics with respect to the loading status of the rocket which is loaded in a launch tube of an airborne launcher. In addition, it determines the procedures for durability test. It was confirmed that the acceleration response of rockets depends on the distance of the airborne launcher from the mount, and the number of rockets loaded in the airborne launcher. The acceleration response increased with an increase in the distance of the airborne launcher from the mount, while it decreased with an increase in the number of rockets loaded in the airborne launcher. Consequently, it is proved that the most efficient test to verify the durability of the rocket is through loading one rocket at a suitable distance between the launcher and the mount. Moreover, frequency analysis showed that the natural frequency decreases and damping ratio increases as the number of rockets increases. This observation is expected to help in the design to avoid natural frequency.