The drag on an airplane taking off from a floating runway |
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Authors: | Jang Whan Kim William C Webster |
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Institution: | (1) Department of Naval Architecture and Offshore Engineering, University of California, Berkeley, CA, USA;(2) Department of Ocean Engineering, University of Hawaii, 2540 Dole Street, Holmes Hall 408a, 96822-2303 Honolulu, HI, USA |
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Abstract: | The motions of an infinitely long, two-dimensional runway subjected to the dynamic moving load imposed by an airplane taking
off are investigated. The runway is assumed to be floating in an inviscid fluid and is initially at equilibrium before the
plane takes off. The deformation of the runway resulting from the take-off is wave-like and moves in the same direction as
the plane. The maximum drag occurs when the plane catches up with the first wave. Three different runway configurations were
considered: a baseline and ones which were ten and one hundred times more flexible than the baseline. For these runways, the
added drag to the aircraft was very small, ranging from 1% for the stiffest to 10% for the most flexible runway. |
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Keywords: | floating runways take-off dynamic motions drag |
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