Linear Heave Dynamics of an Air-Cushion Vehicle Bag-and-Finger Skirt

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概要

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• Results from a linear analysis of the heave dynamics of an air-cushion vehicle equipped with a bag-and-finger skirt are described. A two-dimensional section of the cushion is subject to pure heave or long-wave surface motion inputs. The skirt mass is lumped in the fingers, with the bag being modelled as a combination of massless inelastic membranes and links. The airflows from bag to cushion and from cushion to atmosphere are assumed quasisteady, and the bag and cushion volumes are modelled as lumped pneumatic capacitances. For a configuration representative of a 37t vehicle, frequency response characteristics show the effect of skirt geometry and mass changes, and cushion capacitance. The results suggest that changes in skirt geometry cannot be used to radically modify an undesirable heave response, but reducing the skirt mass may be effective. The air compressibility also affects heave response at high frequencies, with the effect becoming more prominent at the low cushion-flow rates now used in practice.

• 社団法人 日本航空宇宙学会の論文
• 2000-08-04

著者

• Chung Joon

  School Of Aerospace Engineering Department Of Mechanical Engineering Ryerson Polytechnic University

• Sullivan Phillip

  Institute For Aerospace Studies University Of Toronto

関連論文

• Linear Heave Dynamics of an Air-Cushion Vehicle Bag-and-Finger Skirt

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