Several flight-critical aerodynamic problems such as buffet, flutter, stall, and wing rock are strongly affected or caused by abrupt changes in unsteady aerodynamic loads and moments. Advanced sensing and flow diagnostic techniques have made possible simultaneous identification and tracking, in real-time, of the critical surface, viscosity-related aerodynamic phenomena under both steady and unsteady flight conditions. The wind tunnel study reported here correlates surface hot-film measurements of leading edge stagnation point and separation point, with unsteady aerodynamic loads on a NACA 0015 airfoil. Lift predicted from the correlation model matches lift obtained from pressure sensors for an airfoil undergoing harmonic pitchup and pitchdown motions. An analytical model was developed that demonstrates expected stall trends for pitchup and pitchdown motions. This report demonstrates an ability to obtain unsteady aerodynamic loads in real-time, which could lead to advances in air vehicle safety, performance, ride-quality, control, and health management.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen


    Exportieren, teilen und zitieren



    Titel :

    Real-Time Unsteady Loads Measurements Using Hot-Film Sensors


    Beteiligte:

    Kongress:

    AIAA Applied Aero Conference ; 2004 ; Providence, RI, United States


    Erscheinungsdatum :

    2004-01-01


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Keine Angabe


    Sprache :

    Englisch


    Schlagwörter :


    Real-Time Unsteady Loads Measurements Using Hot-Film Sensors

    A. S. Mangalam / T. R. Moes | NTIS | 2004


    Real-Time Unsteady Loads Measurements Using Hot-Film Sensors

    Mangalam, Arun / Moes, Timothy | AIAA | 2004


    Real-Time Unsteady Loads Measurements Using Hot-Film Sensors

    Mangalam, Arun S. / Moes, Timothy R. | NTRS | 2004


    Real-Time Unsteady Loads Measurements Using Hot-Film Sensors

    A. S. Mangalam / T. R. Moes | NTIS | 2004