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1–20 von 307 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

    Update on Prediction Uncertainty Reduction (PUR) Tech Challenge

    James Bridges | NTRS
    Schlagwörter: jet noise , noise prediction

    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

    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

    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

    Remote Psychoacoustic Test for Urban Air Mobility Vehicle Noise Human Response

    Siddhartha Krishnamurthy | NTRS
    Schlagwörter: UAM Vehicle Noise , UAM Noise , Urban Air Mobility Noise , Urban Air Mobility Vehicle Noise

    Status of Moog SureFly Hover Test and Progress on Noise Prediction Efforts

    Brenda Henderson / Jordan Cluts / Alexander Svetgoff | NTRS
    Schlagwörter: jet noise

    Learjet Test Update

    Brenda Henderson / Lennart Hultgren / Devin Boyle | NTRS
    Schlagwörter: jet noise

    Dynamic Temperature and Pressure Measurements in the Core of a Propulsion Engine

    Schuster, Bill / Gordon, Grant / Hultgren, Lennart S. | NTRS | 2015
    Schlagwörter: Combustor Noise , Turbomachinery Noise

    Urban Air Mobility Noise: Current Practice, Gaps, and Recommendations

    Stephen A Rizzi / Dennis L Huff / David D Boyd et al. | NTRS | 2020
    Schlagwörter: aircraft noise metrics , noise reduction technology , noise policy , noise regulation , noise prediction tools

    Core/Combustor Noise - Research Overview

    Hultgren, Lennart S. | NTRS | 2017
    Schlagwörter: Turbomachinery Noise , Combustor Noise