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

1–20 of 468 hits
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    5.56/7.62MM Weapons Comparative Evaluation, OH-6A Helicopter

    J. R. Wing / R. S. Holasek / V. L. Kiekmann | NTIS | 1971
    panel and gun-mount vibration levels, cockpit gun-noise levels, and gun-gas levels created by weapons firing. Only minor differences were noted ...
    Keywords: Vibration , Combat noise

    Acceptance and control of aircraft interior noise and vibration

    Stephens, D. G. / Leatherwood, J. D. | NTRS | 1980
    Ride quality criteria for noise, vibration, and their combination in the helicopter cabin environment are discussed. Results are presented ...
    Publisher: NASA National Aeronautics and Space Administration

    A comparison of acoustic and random vibration testing of spacecraft

    Bangs, W. F. | NTRS | 1974
    large, low density spacecraft launched by a vehicle which produces significant acoustic noise and transmits relatively little vibration through ...
    Publisher: NASA National Aeronautics and Space Administration

    A comprehensive analytical model of rotorcraft aerodynamics and dynamics. Part 1: Analysis development

    Johnson, W. | NTRS | 1980
    noise; helicopter vibration and gust response; flight dynamics and handling qualities; and system aeroelastic stability. The analysis is ...
    Publisher: NASA National Aeronautics and Space Administration

    A Comprehensive Analytical Model of Rotorcraft Aerodynamics and Dynamics. Part 1: Analysis Development

    W. Johnson | NTIS | 1980
    noise; helicopter vibration and gust response; flight dynamics and handling qualities; and system aeroelastic stability. The analysis is ...
    Publisher: National Aeronautics and Space Administration, Moffett Field, CA. Ames Research Center

    A Comprehensive Analytical Model of Rotorcraft Aerodynamics and Dynamics. Part 3: Program Manual

    W. Johnson | NTIS | 1980
    to calculate rotor performance, loads, and noise; the helicopter vibration and gust response; the flight dynamics and handling qualities; and ...
    Publisher: National Aeronautics and Space Administration, Moffett Field, CA. Ames Research Center
    Keywords: Aircraft noise , Vibration

    A comprehensive analytical model of rotorcraft aerodynamics and dynamics. Part 3: Program manual

    Johnson, W. | NTRS | 1980
    to calculate rotor performance, loads, and noise; the helicopter vibration and gust response; the flight dynamics and handling qualities; and ...
    Publisher: NASA National Aeronautics and Space Administration

    A Comprehensive Analytical Model of Rotorcraft Aerodynamics and Dynamics. Part I. Analysis Development

    W. Johnson | NTIS | 1980
    calculate rotor performance, loads, and noise; helicopter vibration and gust response; flight dynamics and handling qualities; and system ...
    Publisher: National Aeronautics and Space Administration, Moffett Field, CA. Ames Research Center
    Keywords: Aircraft noise , Vibration

    A Comprehensive Analytical Model of Rotorcraft Aerodynamics and Dynamics. Part III. Program Manual

    W. Johnson | NTIS | 1980
    to calculate rotor performance, loads, and noise; the helicopter vibration and gust response; the flight dynamics and handling qualities; and ...
    Publisher: National Aeronautics and Space Administration, Moffett Field, CA. Ames Research Center
    Keywords: Aircraft noise , Vibration

    A Comprehensive Analytical Model of Rotorcraft Aerodynamics and Dynamics. Part II. User's Manual

    W. Johnson | NTIS | 1980
    rotor performance, loads, and noise; the helicopter vibration and gust response; the flight dynamics and handling qualities; and the system ...
    Publisher: National Aeronautics and Space Administration, Moffett Field, CA. Ames Research Center
    Keywords: Aircraft noise , Vibration

    Acoustically Tailored Composite Rotorcraft Fuselage Panels

    Hambric S. / Shepherd M. / Koudela K. et al. | NTIS | 2015
    frequencies between 1 and 4 kHz where gear meshing noise from the transmission has the most impact on speech intelligibility. The roof section, framed ...
    Keywords: Noise reduction , Structural vibration

    Acoustic and vibration environments for laboratory experiments in space

    Rader, W. P. | NTRS | 1981
    The basic parameters of random noise and vibration are described, and typical environments for the launch phase and orbital operations are ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Spacecraft Design, Testing And Performance

    Acoustic Detection Of Loose Particles In Pressure Sensors

    Kwok, Lloyd C. | NTRS | 1995
    object being shaken. Shaker applies controlled vibration. Output of microphone recorded and expressed in terms of voltage, yielding history of ...
    Publisher: NASA National Aeronautics and Space Administration

    Acoustic Load Considerations for Spacecraft Structures

    Wilby, J. F. / Piersol, A. G. | NTRS | 1986
    was developed. A modified form of the model can also be used to predict vibration levels of the orbiter mid fuselage and to evaluate noise ...
    Publisher: NASA National Aeronautics and Space Administration

    Acoustic Measurements of Small Solid Rocket Motor

    Vargas, Magda B. / Kenny, R. Jeremy | NTRS | 2010
    Rocket acoustic noise can induce loads and vibration on the vehicle as well as the surrounding structures. Models have been developed to ...
    Publisher: NASA National Aeronautics and Space Administration

    Acoustics Research of Propulsion Systems

    X. Gao / J. Houston | NTIS | 2014
    used in the prediction of the internal vibration responses of the vehicle and components. Present liftoff vehicle acoustic environment ...
    Publisher: National Aeronautics and Space Administration, Huntsville, AL. George C. Marshall Space Flight Center.
    Keywords: NOISE SPECTRA , VIBRATION TESTS

    Activities of the Institute of Sound and Vibration Research

    NTIS | 1972
    The activities of the Institute of Sound and Vibration Research at the University of Southampton for the year ending March 1972, are ...
    Publisher: Southampton Univ. (England). Inst. of Sound and Vibration Research
    Keywords: Vibration measurement

    Actuator placement for active sound and vibration control

    NTIS | 1997
    Control Problems' and 'Quelling Cabin Noise in Turboprop Aircraft via Active Control.' The conference presentations covered various aspects of ...
    Publisher: College of William and Mary, Williamsburg, VA
    Keywords: Noise Pollution & Control , Aircraft noise , Noise reduction , Vibration damping

    [Actuator placement for active sound and vibration control]

    NTRS | 1997
    Control Problems" and "Quelling Cabin Noise in Turboprop Aircraft via Active Control." The conference presentations covered various aspects of ...
    Publisher: NASA National Aeronautics and Space Administration

    Adaptive Rotor Blade Concepts -Direct Twist and Camber Variation-

    A. Bueter / U. C. Ehlert / D. Sachau et al. | NTIS | 2001
    Applying adaptronics to helicopters has a high potential to significantly suppress noise, reduce vibration and increase the overall ...
    Keywords: Test and evaluation , Vibration , Aircraft noise