Technical Briefs

Optimal Static Characteristics of Amphibious PAR Vehicles

[+] Author and Article Information
Konstantin I. Matveev

School of Mechanical and Materials Engineering, Washington State University, Pullman, WA 99164-2920matveev@wsu.edu

J. Offshore Mech. Arct. Eng 130(3), 034502 (Jul 18, 2008) (3 pages) doi:10.1115/1.2948957 History: Received July 24, 2007; Revised March 21, 2008; Published July 18, 2008

Power augmented ram platform vehicle is a high-performance air-assisted amphibious transport of the new generation. The objective of this study is to determine the optimal position of the platform flap for low-speed operations on water and solid ground. The static friction of vehicle hulls on solid surfaces and the static deformation of the water surface are combined with results of the ideal jet theory to predict forces and the platform position. The optimal values for the flap gap are obtained that maximize the recovered static thrust on solid surfaces and the vehicle vertical position on the water surface.

Copyright © 2008 by American Society of Mechanical Engineers
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Grahic Jump Location
Figure 1

Photo of a PAR model

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Figure 2

Schematic of a horizontal PAR platform and main air jets

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Figure 3

Optimal characteristics of PAR system on solid surfaces: (a) maximum recovered thrust, (b) stern jet thickness, and (c) PAR-supported weight fraction

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Figure 4

Schematic of the PAR platform on the water surface: (a) Side view with jet blowing, (b) front view without blowing (zero thrust of front propulsors), and (c) front view with blowing

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Figure 5

PAR-system characteristics on water: (a) maximum vehicle rise corresponding (b) flap gap and (c) recovered thrust



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