Experimental investigations on the ground effect characteristics of the U-shaped and V-shaped wing designs for the Aero-Train

Tomoyuki Ishizuka, Yasuaki Kohama, Takuma Kato, Shuya Yoshioka

    Research output: Contribution to journalArticle

    Abstract

    This paper describes the investigations on the aerodynamic characteristics of a U-shaped and V-shaped wing in ground effect. The lift, drag, side force, and rolling moment were measured in a low turbulance wind tunnel, using a 6-component balance. The flow over the upper surface was visualized by the tuft method. The results obtained were as follows: The U-shaped and V-shaped wing had an almost equivalent lift-to-drag ratio compared to a planar wing. This was due to the dihedral angle of U-shaped and V-shaped wing, resulting in a decrease of the induced drag. While separation only occurred on the V-shaped wing at an attack angle of 6 degree, a higher lift-to-drag ratio of the U-shaped wing was obtaind at attack angle of 4 and 6 degree. With both wings, an almost equal restoring force and an even higher restoring moment were obtained than with a conventional boxshaped wing. Thus, the U-shaped and V-shaped wing offer a more suitable wing configuration for the Aero-Train than a conventional wing does.

    Original languageEnglish
    Pages (from-to)1228-1235
    Number of pages8
    JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
    Volume72
    Issue number5
    DOIs
    Publication statusPublished - 2006 Jan 1

    Keywords

    • Aero-Train
    • Flow Visualization
    • Fluid Force
    • Lift-to-Drag Ratio
    • Separation
    • U-shaped Wing
    • V-shaped Wing
    • Wing in Ground Effect

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Mechanical Engineering

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