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

41–60 of 468 hits
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    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

    American Transit Association Rail Transit Conference. Ways and Structures Division Session. Noise and Vibration Control Program

    G. W. Keyes | NTIS | 1973
    Noise and vibration control has been a primary consideration in the design of the Metro system. Consultants were engaged to provide basic ...
    Keywords: Noise Pollution & Control , Noise reduction , Vibration

    Subjective Response to Combined Noise and Vibration During Flight of a Large Twin-Jet Airplane

    S. A. Clevenson | NTIS | 1976
    A NASA twin-jet airplane was used to obtain controlled noise and vibration environments during flight while obtaining subjective responses ...
    Publisher: National Aeronautics and Space Administration. Langley Research Center, Langley Station, Va
    Keywords: Aircraft noise , Vibration tests , Noise measurement , Vibration measurement

    Interior Noise and Vibration Measurements on Operational Military Helicopters and Comparisons with Various Ride Quality Criteria

    S. A. Clevenson / J. D. Leatherwood / D. D. Hollenbaugh | NTIS | 1983
    This paper presents physical measurements of the interior noise and vibration obtained within eight operational military helicopters. The ...
    Publisher: National Aeronautics and Space Administration, Hampton, VA. Langley Research Center
    Keywords: Noise Pollution & Control , Aircraft noise , Vibration , Noise reduction , Interior noise , Helicopter interior noise , Aircraft interior noise

      Interior Noise and Vibration Measurements on Operational Military Helicopters and Comparisons with Various Ride Quality Criteria

      S. A. Clevenson / J. D. Leatherwood / D. D. Hollenbaugh | NTIS | 1983
      The results of physical measurements of the interior noise and vibration obtained within eight operational military helicopters are ...
      Publisher: National Aeronautics and Space Administration, Hampton, VA. Langley Research Center
      Keywords: Noise Pollution & Control , Aircraft noise , Noise measurement , Noise reduction , Vibration

    Interior noise and vibration measurements on operational military helicopters and comparisons with various ride quality criteria

    Clevenson, S. A. / Leatherwood, J. D. / Hollenbaugh, D. D. | NTRS | 1983
    The results of physical measurements of the interior noise and vibration obtained within eight operational military helicopters are ...
    Publisher: NASA National Aeronautics and Space Administration

    Subjective response to combined noise and vibration during flight of a large twin-jet airplane

    Clevenson, S. A. | NTRS | 1976
    A NASA twin-jet airplane was used to obtain controlled noise and vibration environments during flight while obtaining subjective responses ...
    Publisher: NASA National Aeronautics and Space Administration

    Effect of Synthesized Propeller Vibration on Passenger Annoyance in a Turboprop Interior Noise Environment

    Clevenson, S. A. | NTRS | 1982
    passengers exposed to cabin plus armrest vibration while being exposed to noise lower rating for the combined cabin vibration and noise environment ...
    Publisher: NASA National Aeronautics and Space Administration

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

    P. C. Murphy / D. D. Vicroy / B. Kramer et al. | NTIS | 2014
    Tunnel. HWB was developed to support the NASA Environmentally Responsible Aviation Project goals of lower noise, emissions, and fuel burn. This ...
    Publisher: National Aeronautics and Space Administration, Hampton, VA. Langley Research Center.
    Keywords: Forced vibration

    Effects of Noise and Vibration on Commercial Helicopter Pilots. Results of Phase 1 Research Final Report

    J. M. Ketchel / T. B. Malone / G. A. Schweickert | NTIS | 1970
    Keywords: Aircraft noise , Vibration effects

    Effects of noise and vibration on commercial helicopter pilots. Results of Phase 1 research Final report

    Ketchel, J. M. / Malone, T. B. / Schweickert, G. A., Jr. | NTRS | 1970
    Noise and vibration effects on commercial helicopter pilot safety, performance, and comfort ...
    Publisher: NASA National Aeronautics and Space Administration

    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

    Effects of helicopter noise and vibration on pilot performance (as measured in a fixed-base flight simulator)

    Stave, A. M. | NTRS | 1973
    The effects of noise and vibration on pilot performance are described. Pilot subjects were required to fly VTOL commercial IFR schedules ...
    Publisher: NASA National Aeronautics and Space Administration

    Vibration Anomaly Indicator in UAVs in presence of Wind

    P. Banerjee / E. Hale / G. Gorospe | NTIS | 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: National Aeronautics and Space Administration, Washington, DC.
    Keywords: Vibration

    Effects of Helicopter Noise and Vibration on Pilot Performance (As Measured in a Fixed-Base Flight Simulator)

    A. M. Stave | NTIS | 1973
    The effects of noise and vibration on pilot performance are described. Pilot subjects were required to fly VTOL commercial IFR schedules ...
    Keywords: Aircraft noise , Vibration effects

    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

    Wheel and Rail Vibration Absorber Testing and Demonstration

    NTIS | 2000
    Wheel/rail noise measurements were performed to assess the effectiveness of wheel and rail vibration absorbers for reducing wayside noise ...
    Keywords: Noise Pollution & Control , Vibration damping , Noise , Structural vibration , Noise reduction , Wheel squeal noise

    Effect of Vehicle Noise and Vibration (Caused by Moving Operations) on Cognitive Performance in the Command and Control Vehicle

    R. A. Tauson / N. W. Doss / D. J. Rice et al. | NTIS | 1995
    To maintain the pace of modern battle and to support the fielding of digital command and control systems, the U.S. Army needed to develop a ...
    Keywords: Command and control systems , Vibration , Background noise

    Non-intrusive Driver Fatigue and Stress Monitoring Using Ambient Vibration Sensing

    H. Y. Noh / P. Zhang | NTIS | 2016
    developed a sensing platform consisting of a network of small vibration sensors distributed inside car seats and seat belts that can successfully ...
    Keywords: Ambient Vibration Sensing

    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