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1–20 von 3,015 Ergebnissen
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    A 20 Year Retrospective of The Advanced Noise Control Fan - Contributions to Turbofan Noise Research

    Sutliff, Daniel L. | NTRS | 2019
    Schlagwörter: Fan Noise , Noise Reduction , Duct Noise

    Acoustic Methods Used in the NASA Glenn 9- by 15- Foot Low-Speed Wind Tunnel

    Brown, Clifford A. / Stephens, David B. | NTRS | 2018
    Schlagwörter: Noise , Fan Noise , Propulsion Noise

    Phase-lock-loop systems.

    Viterbi, A. J. | NTRS | 1963
    Schlagwörter: SIGNAL NOISE

    Jet-Surface Interaction Noise from High-Aspect Ratio Nozzles: Test Summary

    Brown, Clifford / Podboy, Gary | NTRS | 2017
    Schlagwörter: Noise , Propulsion Noise , Jet Surface Interaction Noise

    ANOPP2 Training Part 2 of 4: Aircraft System Noise Prediction

    Leonard V. Lopes | NTRS
    Schlagwörter: Aircraft Noise , Aircraft Noise Prediction

    Prediction-based Auralization of a Multirotor Urban Air Mobility Vehicle

    Siddhartha Krishnamurthy / Stephen A Rizzi / Rui Cheng et al. | NTRS
    Schlagwörter: Self-Noise , UAM Vehicle Noise , Urban Air Mobility Vehicle Noise Auralization , Self Noise , Periodic Noise , UAM Vehicle Noise Auralization

    DGEN Aeropropulsion Research Turbofan (DART): Lossless Projection of Measured Engine Noise Spectra to a 1-Foot-Radius Arc

    Brown, Clifford A. / Sutliff, Daniel L. | NTRS | 2018
    Schlagwörter: Noise , Propulsion Noise , Jet Noise

    Subsonic-Transport Core/Combustor Noise

    L. S. Hultgren | NTIS | 2021
    Schlagwörter: Combustor noise , Turbomachinery noise

    Update on Prediction Uncertainty Reduction (PUR) Tech Challenge

    James Bridges | NTRS
    Schlagwörter: jet noise , noise prediction

    Prediction-based Auralization of a Multirotor Urban Air Mobility Vehicle

    S. Krishnamurthy / S. A. Rizzi / R. Cheng et al. | NTIS | 2020
    Schlagwörter: Self noise , Uam vehicle noise , Urban air mobility vehicle noise auralization , Self-noise , Periodic noise , Uam vehicle noise auralization

    Helicopter Flight Procedures for Community Noise Reduction

    E. Greenwood | NTIS | 2017
    Schlagwörter: Aircraft noise , Noise pollution , Noise reduction , Low noise

    Aircraft Technology Pathways to Quieter and Sustainable Airports

    Russell H. Thomas / Ian A. Clark / Yueping Guo | NTRS
    Schlagwörter: Aircraft noise , Aircraft System Noise , Noise Reduction Technology

    Learjet Acoustics Flight Test – An Initial Look

    Lennart S. Hultgren / Brenda S. Henderson | NTRS
    Schlagwörter: aeroacoustics, jet noise, flyover noise

    Core/Combustor-Noise Baseline Measurements for the DGEN Aeropropulsion Research Turbofan

    D. K. Boyle / B. S. Henderson / L. S. Hultgren | NTIS | 2018
    Schlagwörter: Noise measurement , Noise reduction

    Green's Function Applicable to Turbofan Exhaust Noise in Jets with an External Center-Body

    Khavaran, Abbas | NTRS | 2018
    Schlagwörter: Noise , Propulsion Noise

    Core/Combustor-Noise Baseline Measurements for the DGEN Aeropropulsion Research Turbofan

    Boyle, Devin K. / Henderson, Brenda S. / Hultgren, Lennart S. | NTRS | 2018
    Schlagwörter: Combustor Noise , Turbomachinery Noise

    ANOPP2 Training Part 2 of 4: Aircraft System Noise Prediction

    L. V. Lopes | NTIS | 2022
    Schlagwörter: Aircraft noise , Aircraft noise prediction

    NASA Auralization Framework and Plugin Architecture

    A. R. Aumann / B. C. Tuttle / W. L. Chapin et al. | NTIS | 2015
    Schlagwörter: Aerodynamic noise , Aircraft noise , Noise generators , Noise measurement

    Validation of Noise Propagation for Lined Inlets

    Alexander A Svetgoff / David B Stephens | NTRS
    Schlagwörter: Aircraft Noise , Inlet Noise Simulations , Noise Propagation , Aircraft Engine Noise

    NASA Glenn's Contributions to Aircraft Engine Noise Research

    L.D Huff | NTIS | 2013
    Schlagwörter: Engine noise , Noise intensity , Noise reduction

      NASA Glenn's Contributions to Aircraft Engine Noise Research

      L. D. Huff | NTIS | 2014
      Schlagwörter: JET AIRCRAFT NOISE , NOISE INTENSITY , NOISE REDUCTION , ENGINE NOISE