Abstract
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.
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