4018 凹状物体(パラシュート)の振動特性(S67-2 大気突入・減速技術(2),21世紀地球環境革命の機械工学:人・マイクロナノ・エネルギー・環境)

概要

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In this article, dynamics characteristics of a round canopy after inflation process is focused. To clarify the phenomenon, the water tunnel experiment is executed. Parachute models are set in a vertical water tunnel which is driven by Siphon's low. Here, the uniform flow direction is opposed to the gravity direction in order to simulate the real parachute vertical drop. Three types of parachute models are set to clarify the oscillation pattern and two types of supporting systems are applied to investigate the effects of the payload motion. The displacement of the object is measured by using CCD camera motion analyzer. According to the results, the oscillation pattern of the parachute models change by time, those are linear, arc, and circular motions. There are differences about degree of freedom of payload between four type tests.
2008-08-02