The potential increase in aerodynamic efficiency whilst operating in close proximity to the ground has stimulated substantial interests in the design and applications of Wing-In-Ground (WIG) craft. The purpose of this paper is to investigate the aerodynamic and stability characteristics, such as the Aerodynamic Center of Height (ACH) and the Aerodynamic Center of Pitch (ACP) of a NACA4412 airfoil in ground effect and give clear physical and mathematical definitions of ACH and ACP

    Design/methodology/approach

    Both a panel method and a Finite Volume Method (FVM) have been employed to analyze the aerodynamic and stability characteristics numerically in this paper.

    Findings

    It is found that for the range of heights and pitch angles investigated, ACH of a NACA 4412 airfoil is only a function of pitch angle while ACP is only a function of height. The ACH of a NACA4412 airfoil lies behind the ACP. When viscous effects are taken into account, the ACH of the NACA4412 airfoil moves further forwards due to boundary layer de-cambering effects.

    Originality/value

    These findings are important for preliminary WIG-craft design and analysis in term of airfoil selection.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Aerodynamic and stability characteristics of NACA4412 in ground effects


    Contributors:
    Budiyono, Agus (editor) / Hao, Wang (author) / Teo, CJ (author) / Khoo, BC (author) / Goh, CJ (author)


    Publication date :

    2013-05-10


    Size :

    9 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Aerodynamics of a NACA4412 Airfoil in Ground Effect

    M. Ahmed / T. Takasaki / Y. Kohama | AIAA | 2007




    Induced rolling moment for NACA4412 plain and flapped wing

    Elsayed, Omer A. | Online Contents | 2010


    Induced rolling moment for NACA4412 plain and flapped wing

    Elsayed, Omer A. / Kwon, Kijung / Asrar, Waqar et al. | Emerald Group Publishing | 2010