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The Use Of Cowl Camber And Taper To Reduce Rotor Stator Interaction Noise

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The Use Of Cowl Camber And Taper To Reduce Rotor Stator Interaction Noise

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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-07-17

The Use Of Cowl Camber And Taper To Reduce Rotor Stator Interaction Noise written by National Aeronautics and Space Administration (NASA) and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-07-17 with categories.

The project had two specific technical objectives: (1) to develop a realistic three-dimensional model of tonal noise due to rotor/stator interaction, as the input field for predictions of diffraction and dissipation by a lined cowl; and (2) to determine whether the generator curve of that cowl, or duct, could be 'steered' to yield substantially lower values of propulsor noise along the engine's fore and aft open sectors. The more general and important aim of their research is to provide the commercial aircraft industry with a useful predictive tool to help it meet its noise-reduction goals. The work has produced a tractable and yet realistic model of rotor/stator interaction noise. The blades in the fan stage are radially divergent, twisted, and of realistically wide chords to match the high frequencies and speeds of the sound-production process. The resulting three-dimensional acoustic nearfield insonifies the interior wall of the diffracting cowl, whose shape, incidentally, does not affect fore or aft noise significantly (but other factors do). Martinez, R. Unspecified Center...

The Use Of Cowl Camber And Taper To Reduce Rotor Stator Interaction Noise

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Author :
language : en
Publisher:
Release Date : 1995

The Use Of Cowl Camber And Taper To Reduce Rotor Stator Interaction Noise written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with categories.

Scientific And Technical Aerospace Reports

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Author :
language : en
Publisher:
Release Date : 1995

Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Aeronautics categories.

Monthly Catalogue United States Public Documents

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Author :
language : en
Publisher:
Release Date : 1995-10

Monthly Catalogue United States Public Documents written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995-10 with Government publications categories.

Monthly Catalog Of United States Government Publications

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Author :
language : en
Publisher:
Release Date : 1995-10

Monthly Catalog Of United States Government Publications written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995-10 with Government publications categories.

The Use Of Cowl Camber And Taper To Reduce Rotor Stator Interaction Noise Final Report R Martinez Cambridge Acoustical Associates February 1995

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Author :
language : en
Publisher:
Release Date :

The Use Of Cowl Camber And Taper To Reduce Rotor Stator Interaction Noise Final Report R Martinez Cambridge Acoustical Associates February 1995 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.