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

    Review of Noise and Vibration Control Technologies for Rotorcraft Transmissions

    J. J. Scheidler / V. M. Asnani | NTIS | 2016
    airframe and produces noise. The scope is thus limited to vibration control treatments and modifications of the gears, driveline, housing ...
    Publisher: National Aeronautics and Space Administration, Cleveland, OH. NASA John H. Glenn Research Center at Lewis Field.
    Keywords: Aerodynamic noise , Noise generators , Vibration damping , Aircraft noise , Noise reduction , Vibration

    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

    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

    Noise and noise-induced structural vibration of the ranger spacecraft

    NTRS | 1965
    Publisher: NASA National Aeronautics and Space Administration
    Keywords: Launch Vehicles And Space Vehicles

    Random Noise and Vibration in Space Vehicles

    R. H. Lyon | NTIS | 1967
    Contents: Introduction (prediction of the environment, calculation of response, simulation of environmental loads); Flight vehicle noise ...
    Publisher: Bolt Beranek and Newman Inc Cambridge Mass
    Keywords: Vibration , Noise , Aerodynamic noise

    Noise and Vibration on High-Speed Tractors

    E. I. Kandaurova | NTIS | 1974
    Keywords: Noise(Sound) , Vibration

    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

    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

    Marine Technology Symposium (4th): Ship Vibration, Noise and Hydrodynamics

    NTIS | 1986
    Contents: Solution of ship vibration problems - current situation and future prospects; Substructure synthesis in the dynamic analysis of ...
    Keywords: Vibration , Noise(Sound)

    Lead-Lag Control for Helicopter Vibration and Noise Reduction

    F. Gandhi | NTIS | 1995
    vibratory hub loads. Some of these methods are aimed specifically at alleviating vibration at very high flight speeds and increasing the maximum ...
    Publisher: National Aeronautics and Space Administration, Hampton, VA. Langley Research Center
    Keywords: Aircraft noise , Vibration , Vibration damping , Noise reduction , Vibration isolators

    Combined Effect of Noise and Vibration on Passenger Acceptance

    J. D. Leatherwood | NTIS | 1983
    combined noise and vibration environments has been completed. This model was developed for use in the prediction and/or assessment of vehicle ride ...
    Publisher: National Aeronautics and Space Administration, Hampton, VA. Langley Research Center
    Keywords: Noise tolerance , Vibration

    Noise and Vibration Characteristics of High Speed Transit Vehicles

    NTIS | 1971
    fixed route, high speed rapid transit systems and equipment. The community noise and ground vibration caused by such systems and vehicles is a ...
    Publisher: Wilson, Ihrig and Associates, Inc., Berkeley, Calif
    Keywords: Noise Pollution & Control , Vibration isolators , Noise reduction , Vibration damping , Noise pollution

    Reduction of Noise and Vibration on Fork Lift Trucks

    P. Bartels / H. Dupuis / P. Jenik et al. | NTIS | 1983
    rotation speed) at the driver's ear of 10,0 dB (A) to 77.5 dB (A), and reduction of vibration of 50% to 65% measured at the driver's seat are ...
    Keywords: Noise Pollution & Control , Noise reduction , Vibration damping

    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

    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

    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

    Wheel/Rail Noise and Vibration. Volume II: Applications to Control of Wheel/Rail Noise

    P. J. Remington / M. J. Rudd / I. L. Ver | NTIS | 1975
    -rail noise, and suggested testing procedures for improving control measures. ...
    Keywords: Noise Pollution & Control , Noise reduction , Vibration damping , Noise pollution , Wheel rail noise

    Novel Adaptive Structural Impedance Control Approach to Suppress Aircraft Vibration and Noise

    V. Wickramasinghe / D. Zimcik / Y. Chen | NTIS | 2004
    Significant levels of undesired vibration and noise are inherent in transport and combat vehicles, particularly in helicopters and ...
    Keywords: Vibration , Aircraft noise

    An Evaluation of Helicopter Noise and Vibration Ride Qualities Criteria

    C. E. Hammond / D. D. Hollenbaugh / S. A. Clevenson et al. | NTIS | 1981
    Two methods of quantifying helicopter ride quality; absorbed power for vibration only and the NASA ride comfort model for both noise and ...
    Publisher: National Aeronautics and Space Administration, Hampton, VA. Langley Research Center
    Keywords: Aircraft noise , Vibration , Noise intensity , Noise measurement , Vibration measurement

    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

    Prediction and Control of Noise and Vibration in Rail Transit Systems

    L. G. Kurzweil / R. Lotz | NTIS | 1978
    are included. The noise environments treated include community noise and vibration near rail lines, vehicle interior noise of urban and ...
    Keywords: Noise Pollution & Control , Noise(Sound) , Vibration , Noise pollution , Vibration damping , Noise levels

    Role of Vibration and Rattle in Human Response to Helicopter Noise

    P. D. Schomer / R. D. Neathammer | NTIS | 1985
    and rattle in human response to helicopter noise. To answer these questions, this study examined the role of vibration and rattle in human ...
    Keywords: Aircraft noise , Vibration , Noise , White noise

    Helicopter Transmission Vibration and Noise Reduction Program. Volume I. Technical Report

    J. J. Sciarra / R. W. Howells / J. W. Lenski et al. | NTIS | 1978
    The objective of the Helicopter Transmission Vibration/Noise Reduction Program was to generate analytical tools for the prediction and ...
    Keywords: Noise Pollution & Control , Noise reduction , Vibration , Aircraft noise , Aircraft engine noise

    Standards of Rider Comfort: Noise, Vibration and Age of Rider as Factors

    R. L. Colegate | NTIS | 1974
    Psychological responses of bus passengers to noise and vibration in terms of ride quality are studied in a field test. An attempt is made ...
    Keywords: Noise intensity

    Chassis Dynamometer for Evaluating Vibration, Noise and Ride Comfort in Motor Vehicles

    W. Gebauer / B. Kaiser / R. Tilch et al. | NTIS | 1988
    evaluation of vibration, noise and torsional vibration on the completed vehicle under any driving conditions is described. ...
    Keywords: Vibration , Noise intensity

    Increasing Truck Driver's Awareness: Use of In-Vehicle 3D Sounds

    D. D. Thompson / K. Wadding / E. Garmon | NTIS | 2013
    situational awareness (SA). Sound insulation of the truck cab, designed to reduce noise, vibration, and harshness (NVH), coupled with the inherent ...
    Keywords: 3D sounds

    Truck Noise VII-A. Experimental Investigation of Truck Tire Sound and Vibration

    W. F. Reiter / A. C. Eberhardt / L. J. Harper et al. | NTIS | 1974
    vibration. The tire sound signal was monitored at a point approximately one foot to the rear of the tire and was recorded simultaneously with the ...
    Publisher: North Carolina State Univ., Raleigh. Dept. of Mechanical and Aerospace Engineering
    Keywords: Noise Pollution & Control , Noise pollution , Vibration , Noise reduction

    Standards of rider comfort: Noise, vibration and age of rider as factors

    Colegate, R. L. | NTRS | 1974
    Psychological responses of bus passengers to noise and vibration in terms of ride quality are studied in a field test. An attempt is made ...
    Publisher: NASA National Aeronautics and Space Administration

    Airborne Tactical Control System Propulsion Study - Noise, Vibration, and Radar Characteristics Report

    J. E. Hesse | NTIS | 1968
    A brief research and analytical investigation was conducted to determine the impact of powerplant radar, noise, and vibration ...
    Keywords: Aircraft noise , Vibration

    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

    Evaluation of Ride Quality Prediction Methods for Helicopter Interior Noise and Vibration Environments

    J. D. Leatherwood / S. A. Clevenson / D. D. Hollenbaugh | NTIS | 1984
    interior noise and vibration typical of routine flights, assessment of various ride quality metrics including the NASA ride comfort model, and ...
    Publisher: National Aeronautics and Space Administration, Hampton, VA. Langley Research Center
    Keywords: Noise Pollution & Control , Vibration , Aircraft noise , Noise reduction , Interior noise

      Evaluation of Ride Quality Prediction Methods for Helicopter Interior Noise and Vibration Environments

      J. D. Leatherwood / S. A. Clevenson / D. D. Hollenbaugh | NTIS | 1984
      interior noise and vibration typical of routine flights, assessment of various ride quality metrics including the NASA ride comfort model, and ...
      Publisher: National Aeronautics and Space Administration, Hampton, VA. Langley Research Center
      Keywords: Noise Pollution & Control , Aircraft noise , Vibration damping

    Noise and Vibration of a Steel Wheel/Steel Rail Personalized Rapid Transit System

    H. E. Gramse / J. H. Spence | NTIS | 1974
    The report describes a test program which has been conducted to establish baseline noise levels and ride characteristics for a state-of-the ...
    Keywords: Noise Pollution & Control , Noise(Sound) , Vibration , Acceleration noise

    Evaluation of ride quality prediction methods for helicopter interior noise and vibration environments

    Leatherwood, J. D. / Clevenson, S. A. / Hollenbaugh, D. D. | NTRS | 1984
    interior noise and vibration typical of routine flights, assessment of various ride quality metrics including the NASA ride comfort model, and ...
    Publisher: NASA National Aeronautics and Space Administration

    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

    Evaluation of Active Damping for Reduction of Noise, Vibration and Motion of Ground Vehicles by Multibody Simulation

    W. R. Krueger / O. Vaculin / M. Spieck | NTIS | 2004
    high vibration peaks as well as long-duration, high frequency vibrations can pose either disorientation and safety problems or a health threat ...
    Keywords: Vibration , Noise reduction

    A Study of Heat, Noise, and Vibration in Relation to Driver Performance and Physiological Status

    R. R. Mackie / J. F. O'Hanlon / M. McCauley | NTIS | 1974
    Three experimental studies were conducted on the highway to determine the effects of heat, noise, and vibration on the driving performance ...
    Keywords: Noise , Vibration

    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

    Noise Emissions and Building Structural Vibration Levels from the Supersonic Concorde and Subsonic Turbojet Aircraft

    E. J. Rickley / R. W. Quinn / N. R. Sussan | NTIS | 1975
    Noise emissions and building structural vibration levels were measured during landing and take off operations of the Anglo/French ...
    Keywords: Noise Pollution & Control , Aircraft noise , Vibration , Noise exposure , Noise levels

    Experimental and Computational Instrumentation for Rotorcraft Noise and Vibration Control Research at the Penn State Rotorcraft Center

    E. Smith | NTIS | 2001
    educational programs focused on rotorcraft noise and vibration control. The new facilities are: (1) Airframe Driveshaft Active Control Testbed, (2 ...
    Keywords: Rotorcraft noise , Vibration control , Vibration , Aircraft noise , Gear noise

    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

    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

    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

    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