High-payload platforms flying in extreme-ground-effect represent a promising concept for high-speed amphibious transportation. Their dynamics is governed, to a large extent, by unsteady airflow under the platform. A quasi-one-dimensional model for the underplatform channel-flow is applied to predict heave and pitch motions of a vehicle in the presence of external disturbances, such as nonuniformities on the underlying ground-surface. It is found that a complete nonlinear theory should be used instead of a linear model to accurately predict motions when ground nonuniformities are relatively short. A flat platform with a flap moving in extreme-ground-effect is intrinsically unstable. An aft-wing out of ground-effect can be added to the system to achieve stability. Movable control surfaces, such as a platform flap, can be also modeled by the nonlinear theory. It is demonstrated that an oscillating flap can reduce heave and pitch amplitudes in flight over a wavy ground-surface.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Heave-Pitch Motions of a Platform Flying in Extreme Ground Effect


    Contributors:

    Published in:

    Publication date :

    2011-05-12


    Size :

    82012-01-01 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Heave-Pitch Motions of a Platform Flying in Extreme Ground Effect

    Matveev, Konstantin I. | Online Contents | 2012


    Active suspension control of ground vehicle heave and pitch motions

    Campos, J. / Davis, L. / Lewis, F.L. et al. | Tema Archive | 1999


    Heave and pitch motions of SWATH ships

    Hong, Y.S. | Tema Archive | 1986


    Hydrodynamic Design of a Monocolumn Platform Avoiding Excessive Heave and Pitch Motions

    Torres, F.G.S. / Sphaier, S.H. / Masetti, I.Q. et al. | British Library Conference Proceedings | 2007