NDLI: Three-dimensional flow characteristics of propeller-propulsion WIG effect vehicle with direct underside pressurization

Content Provider	Springer Nature Link
Author	Lee, Juhee Kim, Byung Moon Park, Kyoungwoo
Copyright Year	2011
Abstract	Numerical investigations for a 3-dimensional WIG effect vehicle with DUP (direct underside pressurization) have been performed. The purpose of this study is to analyze the aerodynamic characteristics and static height stability of DUP using computational fluid dynamics (CFD). When a WIG effect vehicle accelerates to take off on water, increased pressure under the fuselage by DUP (propeller and air chamber) can considerably reduce the take-off speed and thus minimize the effect of the hump drag which is one of the technical difficulties of a WIG effect vehicle. The accelerated air by the propeller enters the air chamber through a channel in the middle of the fuselage resulting in an augmentation of the lift by changing the air pressure from dynamic to static. However, the DUP is not favorable for both stability and aerodynamic performance of the WIG effect vehicle because the accelerated air produces an excessive drag, negative pitching moment and 3-dimensional effects (that is, yawing and rolling moments). The result shows that the effect of yawing and rolling moments is not serious.
Starting Page	1949
Ending Page	1960
Page Count	12
File Format	PDF
ISSN	1738494X
Journal	Journal of Mechanical Science and Technology
Volume Number	25
Issue Number	8
e-ISSN	19763824
Language	English
Publisher	Korean Society of Mechanical Engineers
Publisher Date	2011-09-01
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Aerodynamic characteristics CFD (computational fluid dynamics) DUP (direct underside pressurization) Ground effect WIG (wing-in-ground) effect vehicle Yawing moment, Rolling moment Industrial and Production Engineering Vibration, Dynamical Systems, Control Mechanical Engineering
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Mechanical Engineering

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