연료 슬로싱 효과를 고려한 위성 기동 간의 SAR 안테나 반사판의 진동 분석Vibration Analysis of SAR Antenna Reflector during Satellite Maneuver Considering the Propellant Sloshing Effect

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Sloshing refers to the movement of a liquid free surface caused by disturbances of a liquid partially filled in a container. Sloshing generates forces and moments owing to the pressure distribution on the liquid free surface, which affect the dynamic stability of the vessel. An equivalent mechanical model that exerts the same amount of force and moment on the vessel wall as sloshing is used to analyze the sloshing effect on the vessel. This phenomenon also occurs in the fuel tank of a satellite structure that controls the attitude using a propulsion system with a liquid propellant. A satellite with a deployable synthetic-aperture radar (SAR) antenna, which is made of a thinner and lighter material, is likely to be more susceptible to various disturbances, including liquid sloshing. In this study, an analysis of a deployable SAR antenna reflector vibrating from the liquid fuel sloshing between the changes in the satellite’s attitude was conducted. The equivalent mechanical model is used to simulate the sloshing effect, and the vibrations of the reflector are compared and analyzed with and without the sloshing effect for the specified torque input.
Publisher
한국소음진동공학회
Issue Date
2020-02
Language
Korean
Citation

한국소음진동공학회논문집, v.30, no.1, pp.52 - 59

ISSN
1598-2785
DOI
10.5050/KSNVE.2020.30.1.052
URI
http://hdl.handle.net/10203/276953
Appears in Collection
AE-Journal Papers(저널논문)
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