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

1–20 of 54 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

    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

    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

    Adaptive suppression of biodynamic interference in helmet mounted and head down displays

    Merhav, Shmuel J. | NTRS | 1988
    adaptive noise suppression algorithm facilitates the separation of the voluntary large head movements from the vibration-induced small nonvoluntary ...
    Publisher: NASA National Aeronautics and Space Administration

    Aerial Very Heavy Lift Concepts for the 1990 Army. Volume III. Academic and Industrial Presentations

    NTIS | 1969
    to approximately 50-60 tons. Shaft-driven and tip-driven helicopter concepts were given major consideration. Power-plant and transmission ...
    Keywords: Vibration , Noise

    Aeroservoelastic Wind-Tunnel Test of the SUGAR Truss Braced Wing Wind-Tunnel Model

    R. C. Scott / T. J. Allen / C. J. Funk et al. | NTIS | 2015
    limit cycle oscillation onset boundaries were identified for a range of Mach numbers and various angles of attack. Two sets of control laws were ...
    Publisher: National Aeronautics and Space Administration, Hampton, VA. Langley Research Center.
    Keywords: Vibration damping , Noise reduction

    Aircraft Noise Effects on Cultural Resources: Recommendation and Rationale for Further Research

    C. E. Hanson / K. W. King / M. E. Eagan et al. | NTIS | 1993
    helicopters. Comparison of measured vibration levels with criteria for damage based on structural velocities will provide a family of restrictions on ...
    Publisher: Harris, Miller, Miller and Hanson, Inc., Lexington, MA
    Keywords: Noise Pollution & Control , Aircraft noise , Noise pollution

    A user-oriented and computerized model for estimating vehicle ride quality

    Leatherwood, J. D. / Barker, L. M. | NTRS | 1984
    described. The model is based on subjective ratings from more than 3000 persons who were exposed to controlled combinations of noise and vibration ...
    Publisher: NASA National Aeronautics and Space Administration

    Automotive Field Test Equipment and Instrumentation

    NTIS | 1989
    vehicle performance, shock and vibration characteristics, and interior/exterior steady state noise levels. Keywords: Test equipment; Automotive ...
    Keywords: Noise , Vibration

    Comparison of Football Shaped Rumble Strips Versus Rectangular Rumble Strips

    L. W. Gardner / M. J. Rys / E. Russell | NTIS | 2007
    performed (Water and Debris Removal, Noise, and Vibration), the surveys conducted (Bicyclists on K-96 and residents along US 40), and similarity in ...
    Publisher: Kansas State Univ., Manhattan. Dept. of Industrial and Manufacturing Systems Engineering
    Keywords: Test and evaluation

    Do Army Helicopter Training Simulators Need Motion Bases

    M. E. McCauley | NTIS | 2006
    evidence is weak; and that motion, noise, and vibration contribute to the realism of the simulation and, therefore, strongly influence the ...
    Keywords: Vibration

    Effect of Helicopter Vibration on the Accuracy of a Voice Recognition System

    T. W. Dennison / F. J. Malkin / C. C. Smyth | NTIS | 1986
    the voice that occur as a result of stress, noise, and vibration. This paper reports the results of an investigation conducted to determine ...
    Keywords: Vibration , 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

    Engine/Airframe/Drive Train Dynamic Interface Documentation

    H. W. Hanson / R. W. Balke / B. D. Edwards et al. | NTIS | 1978
    The purpose of this program was to survey Bell Helicopter Textron past and present experiences as related to gas-turbine-powered helicopter ...
    Keywords: Vibration , Engine noise

    Engineering Flight Test of the UH-1C Helicopter Equipped with the XM-30 Weapon System

    K. R. Ferrell / D. C. Dugan / R. S. Holasek | NTIS | 1967
    levels of stress, vibration, blast, and noise during firing and restrictive limitations were imposed by gun malfunctions and system gross weight ...
    Keywords: Vibration , Noise

    Engineering Flight Test (Product Improvement Test) of Production OH-6A Helicopter Unarmed and Armed with the XM-27E1 Weapon System Phase D

    J. I. Nagata / H. P. Wolf / J. J. Shapley | NTIS | 1968
    to 8 degrees or less at 100 KIAS until the cause of the implosion can be determined. Noise level and vibration tests should be conducted ...
    Keywords: Aircraft noise , Vibration

    Evaluation of piezoceramic actuators for control of aircraft interior noise

    Silcox, Richard J. / Lefebvre, Sylvie / Metcalf, Vern L. et al. | NTRS | 1992
    actuator channels and six error signals were used. The actuators were employed for control of noise at frequencies where interior cavity modes were ...

    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

    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

    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