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

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    Surface Vibration Measurement and Analysis for UAM/UAS Electric Motor Noise

    Jordan D Cluts / Dennis L Huff / Brenda S Henderson et al. | NTRS
    noise profile and could generate cabin noise. Understanding and predicting the noise requires more knowledge of the rotor vibrations ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Electric Motor Noise , Aircraft Propulsion And Power

    A Review of Noise and Vibration Control Technologies for Rotorcraft Transmissions

    Scheidler, Justin J. / Asnani, Vivake M. | NTRS | 2016
    airframe and produces noise. The scope is thus limited to vibration control treatments and modifications of the gears, driveline, housing ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: gear vibration , cabin noise

    Current structural vibration problems associated with noise

    Mixson, J. S. | NTRS | 1974
    these high-performance vehicles are reviewed and an estimate made of selected noise-induced structural vibration problems. Considerations for ...
    Publisher: NASA National Aeronautics and Space Administration

    Combined effect of noise and vibration on passenger acceptance

    Leatherwood, J. D. | NTRS | 1984
    combined noise and vibration environments has been completed. This model was developed for use in the prediction and/or assessment of vehicle ride ...
    Publisher: NASA National Aeronautics and Space Administration

    Physical and subjective studies of aircraft interior noise and vibration

    Stephens, D. G. / Leatherwood, J. D. | NTRS | 1979
    Measurements to define and quantify the interior noise and vibration stimuli of aircraft are reviewed as well as field and simulation ...
    Publisher: NASA National Aeronautics and Space Administration

    Human Response to Aircraft-Noise-Induced Building Vibration

    Cawthorn, J. M. / Dempsey, T. K. / DeLoach, R. | NTRS | 1978
    The effects of noise induced building structure vibration and the rattle of objects on human response to aircraft flyover noise were ...
    Publisher: NASA National Aeronautics and Space Administration

    An evaluation of helicopter noise and vibration ride qualities criteria

    Hammond, C. E. / Hollenbaugh, D. D. / Clevenson, S. A. et al. | NTRS | 1981
    Two methods of quantifying helicopter ride quality; absorbed power for vibration only and the NASA ride comfort model for both noise and ...
    Publisher: NASA National Aeronautics and Space Administration

    Reduction of Helicopter BVI Noise, Vibration, and Power Consumption Through Individual Blade Control

    Jacklin, Stephen A. / Blaas, Achim / Teves, Dietrich et al. | NTRS | 1994
    (IBC) to improve rotor performance, to reduce blade vortex interaction (BVI) noise, and to alleviate helicopter vibrations. The wind tunnel ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Aircraft Design, Testing And Performance

    Finite element analysis using NASTRAN applied to helicopter transmission vibration/noise reduction

    Howells, R. W. / Sciarra, J. J. | NTRS | 1975
    optimize the housing for minimum vibration/noise, and determination of design modifications which will be manufactured and tested. The techniques ...
    Publisher: NASA National Aeronautics and Space Administration

    Operational military helicopter interior noise and vibration measurements with comparisons to ride quality criteria

    Clevenson, S. A. / Leatherwood, J. D. / Hollenbaugh, D. D. | NTRS | 1983
    military helicopters. It was noted that criteria accounting for both multiple axis vibration and interior noise are needed. The present ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Aircraft Design, Testing And Performance

    Hybrid Wing Body Model Identification Using Forced-Oscillation Water Tunnel Data

    Murphy, Patrick C. / Vicroy, Dan D. / Kramer, Brian et al. | NTRS | 2014
    Tunnel. HWB was developed to support the NASA Environmentally Responsible Aviation Project goals of lower noise, emissions, and fuel burn. This ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Aircraft Design, Testing And Performance , Aircraft Stability And Control

    Vibration Anomaly Detection by Clustering in Unmanned Aerial Vehicles.

    Portia Banerjee / Rajeev Ghimire / Elizabeth J Hale | NTRS
    mounting or propeller imbalances can cause high vibrations in UAVs. On the other hand, high vibration itself may induce noise in the onboard ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Aircraft Design, Testing and Performance , vibration , Air Transportation and Safety

    Vibration Anomaly Indicator in UAVs in presence of Wind

    Portia Banerjee / Elizabeth Hale / George Gorospe | NTRS | 2023
    the attitude sensing, the vibration levels need to be as low as possible in order to minimize the signal noise. Incorrect sensor data can lead ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Vibration , Air Transportation And Safety

    Passive Wireless Vibration Sensing for Measuring Aerospace Structural Flutter

    Wilson, William C. / Moore, Jason P. | NTRS | 2017
    To reduce energy consumption, emissions, and noise, NASA is exploring the use of high aspect ratio wings on subsonic aircraft. Because high ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Electronics And Electrical Engineering

    All-Electric X-Plane, X-57 Mod II Ground Vibration Test

    Natalie Dawn Spivey / Samson Truong / Roger Truax | NTRS
    electric propulsion to show the feasibility of minimizing fuel use, reducing emissions, and lowering noise during flight. Through several ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Aircraft Design, Testing And Performance

    Analysis of Limit Cycle Oscillation Data from the Aeroelastic Test of the SUGAR Truss-Braced Wing Model

    Bartels, Robert E. / Funk, Christie / Scott, Robert C. | NTRS | 2015
    Research focus in recent years has been given to the design of aircraft that provide significant reductions in emissions, noise and fuel ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Aircraft Design, Testing And Performance

    Vibration Challenges in the Design of NASA's Ares Launch Vehicles

    Ryan, Stephen G. | NTRS | 2009
    Booster Thrust Oscillation, and Liquid Rocket Engine Turbopump Rotordynamic Stability and Response are presented. ...
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Launch Vehicles And Launch Operations

    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

    Measurement, analysis, and prediction of aircraft interior noise

    Howlett, J. T. / Williams, L. H. / Catherines, J. J. et al. | NTRS | 1976
    and laboratory studies for a light aircraft are presented. The laboratory data indicate that structural vibration is an efficient source of ...
    Publisher: NASA National Aeronautics and Space Administration

    Laboratory and community studies of aircraft noise effects

    Stephens, D. G. / Powell, C. A. | NTRS | 1978
    interior noise and vibration for speech intelligibility and comfort of crew and passengers. Selected results from several recent studies are ...
    Publisher: NASA National Aeronautics and Space Administration