Synonyms were used for: Noise vibration,
Search without synonyms: title: Noise and Vibration; Noise and vibration, 2010

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    Response of a shroud-enclosed spacecraft to combined acoustic-vacuum environments

    Bruck, L. R. | NTRS | 1972
    in the vibration response. There are, however, certain locations on the spacecraft and spacecraft adapter trusses where the reduction in ...
    Publisher: NASA National Aeronautics and Space Administration

    A Statistical Approach to Establishing Subsystem Environmental Test Specifications

    Keegan, W. B. | NTRS | 1974
    test exposures to the environments of mechanical shock, acoustic noise, and random vibration. This statistical evaluation is presented in the ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Spacecraft Design, Testing And Performance

    Handbook for Dynamic Data Acquisition and Analysis - IES Recommended Practices 012.1

    Himelblau, H. / Wise, J. W. / Piersol, A. G. et al. | NTRS | 1994
    Force Space and Missile Systems Center. Over the preceding two decades, TAC has observed a seemingly endless series of errors and anomalies in ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Shock vibration acoustic noise

    An Introduction to Rotorcraft Research at NASA Ames

    Chen, Robert T. N. / Aiken, Edwin W. | NTRS | 1997
    for reduction of external noise and vibration, noise-abatement flight procedures, engine inoperative procedures, handling qualities, and ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Aircraft Design, Testing And Performance

    Condition Monitoring of Helicopter Gearboxes by Embedded Sensing

    Suryavanashi, Abhijit / Wang, Shengda / Gao, Robert et al. | NTRS | 2002
    Health of helicopter gearboxes is commonly assessed by monitoring the housing vibration, thus it is challenged by poor signal-to-noise ...
    Publisher: NASA National Aeronautics and Space Administration

    Airloads and Wake Geometry Calculations for an Isolated Tiltrotor Model in a Wind Tunnel

    Johnson, Wayne | NTRS | 2003
    , including performance, structural loads, vibration, and aeroelastic stability, with an accuracy established by correlation with measured tiltrotor ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Aircraft Design, Testing And Performance

    Rotor Flapping Response to Active Control

    Nguyen, Khanh / Johnson, Wayne | NTRS | 2004
    Rotor active control using higher harmonic blade pitch has been proposed as a means to reduce both rotor radiated noise and airframe ...
    Publisher: NASA National Aeronautics and Space Administration