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81–100 von 2,757 Ergebnissen
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    Measurement and Characterization of Helicopter Noise at Different Altitudes

    M. E. Watts / E. Greenwood / J. Stephenson | NTIS | 2016
    Schlagwörter: Aircraft noise , Noise generators

    Noise Data of Four Small Propeller-Driven Airplanes

    G. J. J. Ruijgrok / D. M. van Paassen | NTIS | 1988
    Schlagwörter: Noise reduction , Noise Pollution & Control , Aerodynamic noise , Engine noise , Aircraft propeller noise , Noise pollution , Aircraft noise

    Advancing Aircraft Noise Impacts Research: A White Paper

    R. Girvin | NTIS | 2009
    Schlagwörter: Noise Pollution & Control , Aircraft noise , Noise effects , Aviation noise , NextGen Noise Modeling Enhancements

    Moog SureFly® Hover Test Update

    B. Henderson / J. Cluts / D. Boyle et al. | NTIS | 2022
    Schlagwörter: Jet noise

    Supersonics Project: Airport Noise Technical Challenge

    J. E. Bridges | NTIS | 2008
    Schlagwörter: Low noise , Aircraft noise

    Measurement of Noise from Airplanes Traveling at 3500 to 11000 M Altitude

    M. Linde / S. Meijer | NTIS | 1986
    Schlagwörter: Noise prediction (Aircraft) , Noise Pollution & Control , Noise spectra , Noise measurement , Noise propagation , Noise intensity , Aircraft noise

    Aircraft Noise Prediction Program Validation

    B. N. Shivashankara | NTIS | 1980
    Schlagwörter: Noise Pollution & Control , Aerodynamic noise , Aircraft noise , Engine noise , Noise prediction (Aircraft) , Noise intensity , Noise measurement , Noise pollution , Noise spectra

    Estimate of the Enroute Noise of an Advanced Turboprop Airplane

    J. H. Dittmar | NTIS | 1986
    Schlagwörter: Noise tolerance , Noise spectra , Noise propagation , Noise (Sound) , Noise intensity , Aircraft noise

    Critical Low-Noise Technologies Being Developed for Engine Noise Reduction Systems Subproject

    J. E. Grady / K. C. Civinskas | NTIS | 2004
    Schlagwörter: Noise Pollution & Control , Jet aircraft noise , Noise reduction , Engine noise

    Community Noise Exposure Resulting from Aircraft Operations: Acquisition and Analysis of Aircraft Noise and Performance Data

    D. E. Bishop / W. J. Galloway | NTIS | 1975
    Schlagwörter: Noise Pollution & Control , Aircraft noise , Noise pollution , Aircraft engine noise , Noise analyzers , Noise reduction , Noise levels , Noise exposure

    Helicopter Non-Unique Trim Strategies for Blade-Vortex Interaction (BVI) Noise Reduction

    C. Malpica / E. Greenwood / B. W. Sim | NTIS | 2016
    Schlagwörter: Noise reduction

    Plug20 Test Report

    James E Bridges / Gary G Podboy / Mark P Wernet | NTRS | 2021
    Schlagwörter: Jet noise

    NASA's Quiet Aircraft Technology Project

    C. E. Whitfield | NTIS | 2004
    Schlagwörter: Aircraft noise , Noise reduction , Noise intensity , Noise pollution

    Propulsion Airframe Aeroacoustics and Aircraft System Noise Flight Test on the Boeing 787 ecoDemonstrator2020

    R. H. Thomas / M. Czech | NTIS | 2020
    Schlagwörter: Aircraft system noise

    Aeroacoustic Validation of Installed Low Noise Propulsion for NASA's N+2 Supersonic Airliner

    J. E. Bridges | NTIS | 2018
    Schlagwörter: Low noise , Jet aircraft noise , Noise prediction

    Airbus Industrie and Community Noise

    J. Chausonnet | NTIS | 1981
    Schlagwörter: Effective perceived noise levels , Noise reduction , Noise Pollution & Control , Aerodynamic noise , Aircraft noise

      Airbus Industrie and Community Noise

      J. Chausonnet | NTIS | 1981
      Schlagwörter: Noise reduction , Noise Pollution & Control , Aeordynamic noise , Noise levels , Noise pollution , Aircraft noise , Jet engine noise

    A Comprehensive Review of Helicopter Noise Literature

    B. Magliozzi / F. B. Metzger / W. Bausch et al. | NTIS | 1975
    Schlagwörter: Noise Pollution & Control , Aircraft noise , Impulse noise , Gear noise , Propeller noise , Engine noise , Noise reduction , Noise certification criteria

    Guidelines for Airport Sound Insulation Programs

    M. K. Payne / R. A. Smith / J. Freytag et al. | NTIS | 2013
    Schlagwörter: Noise Pollution & Control , Aircraft noise , Noise-sensitive buildings

    Noise Measurements from Ground Tests of the Moog SureFly Vehicle

    D. Huff / B. Henderson / J. Cluts et al. | NTIS | 2020
    Schlagwörter: Rotor noise

    Development of Noise Control Regulations for National Park Service Enforcement

    N. Miller / K. Donnelly / K. Baus | NTIS | 2003
    Schlagwörter: Noise Pollution & Control , Noise control , Noise pollution , Noise reduction , Noise exposure , Snowmobile noise , Personal watercraft noise , Motorcycle noise , Motor vehicle noise