1–13 von 13 Ergebnissen
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    Propeller sound field modification systems and methods

    Freier Zugriff
    KOOPMANN GARY H / GRISSOM MICHAEL D | Europäisches Patentamt | 2016

    SMA Based Adaptive Tuneable Dynamic Vibration Absorbers for Noise Radiated Control

    Tiseo, Barbara / Koopmann, Gary / Concilio, Antonio | AIAA | 2005

    Mechanical diode based, high-torque piezoelectric rotary motor

    Lesieutre, George / Koopmann, Gary / Frank, Jeremy | AIAA | 2001

    Actuation of an Active Gurney Flap for Rotorcraft Applications

    Thiel, Michael / Lesieutre, George / Maughmer, Mark et al. | AIAA | 2006

    Smart Tuneable Dynamic Vibration Absorbers

    Tiseo, Barbara / Koopmann, Gary / Concilio, Antonio et al. | AIAA | 2006

    Geräuschminderung bei Radialventilatoren durch [lambda]/4-Resonatoren

    Neise, Wolfgang / Koopmann, Gary H. | TIBKAT | 1981

    Active broadband force isolation using a flexural piezoelectric inertial actuator

    Bernard, Julien / Lesieutre, George / Koopmann, Gary | AIAA | 1999

    A Nonlinear Transmission that Increases Piezo-Stack Work Output

    Lesieutre, George / Loverich, Jacob / Koopmann, Gary et al. | AIAA | 2003

    A New Mechanically Ratcheting Piezoelectric Motor for High Power Applications

    Loverich, Jacob / Mockensturm, Eric / Koopmann, Gary et al. | AIAA | 2002

    Design of adaptive panels with high transmission loss characteristics

    St, Jr., Richard / Chen, Weicheng / Koopmann, Gary | AIAA | 1996

    Modeling and characterization of a piezoceramic inertial actuator

    Lesieutre, George / Rusovici, Razvan / Koopmann, Gary et al. | AIAA | 1995

    A General Optimization Approach for Minimizing Acoustic Power Using Finite Elements

    Belegundu, Ashok D. / Koopmann, Gary H. / Naghshineh, Koorosh et al. | SAE Technical Papers | 1993