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Design Selection And Analysis Of A Swept And Leaned Stator Concept

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Design Selection And Analysis Of A Swept And Leaned Stator Concept

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Author : Edmane Envia
language : en
Publisher:
Release Date : 1998

Design Selection And Analysis Of A Swept And Leaned Stator Concept written by Edmane Envia and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with categories.

Design Selection And Analysis Of A Swept And Leaned Stator Concept

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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-08-16

Design Selection And Analysis Of A Swept And Leaned Stator Concept 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 2018-08-16 with categories.

This report describes a theoretical design and analysis study of the benefits of vane sweep and lean for reducing rotor- stator interaction tone noise. It is shown that the kinematic relationship between the rotor wakes and stator vanes is the principal factor in determining the achievable noise reductions. Vane sweep and lean control rotor wake skewing as seen by the stator vanes and hence influence the number of wake intersections per vane. An increase in the number of intersections reduces noise levels. Hence, to reduce rotor-stator noise, van sweep and lean must be chosen in such a way as to increase wake intersections per vane. A simple design rule is thus proposed which requires a sweep configuration that puts the vane tip downstream of its root and a vane lean that is in the direction of the rotor rotation. A detailed comparison of the predicted and measured noise reductions for a swept and leaned stator is then carried out. Overall, these comparisons show that the predicted benefits of a swept and leaned stator are in good agreement, qualitative as well as quantitative, with the measured reductions for the fan speeds relevant to noise certification procedure. Furthermore, the results also demonstrate the validity of design criterion and the theoretical tools used in this study. Envia, Edmane and Nallasamy, M. Glenn Research Center NASA/TM-1998-208662, NAS 1.15:208662, E-11383 RTOP 538-03-11...

Design Selection And Analysis Of A Swept And Leaned Stator Concept Nasa Tm 1998 208662 Mar 1 1999

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Author : United States. National Aeronautics and Space Administration
language : en
Publisher:
Release Date : 1999*

Design Selection And Analysis Of A Swept And Leaned Stator Concept Nasa Tm 1998 208662 Mar 1 1999 written by United States. National Aeronautics and Space Administration and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999* with categories.

Unsteady Aerodynamics Aeroacoustics And Aeroelasticity Of Turbomachines

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Author : Kenneth C. Hall
language : en
Publisher: Springer Science & Business Media
Release Date : 2006-05-11

Unsteady Aerodynamics Aeroacoustics And Aeroelasticity Of Turbomachines written by Kenneth C. Hall and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-05-11 with Technology & Engineering categories.

This textbook is a collection of technical papers that were presented at the 10th International Symposium on Unsteady Aerodynamics, Aeroacoustics, and Aeroelasticity of Turbomachines held September 8-11, 2003 at Duke University in Durham, North Carolina. The papers represent the latest in state of the art research in the areas of aeroacoustics, aerothermodynamics, computational methods, experimental testing related to flow instabilities, flutter, forced response, multistage, and rotor-stator effects for turbomachinery.

Handbook Of Noise And Vibration Control

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Author : Malcolm J. Crocker
language : en
Publisher: John Wiley & Sons
Release Date : 2007-10-05

Handbook Of Noise And Vibration Control written by Malcolm J. Crocker and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-10-05 with Technology & Engineering categories.

Two of the most acclaimed reference works in the area of acoustics in recent years have been our Encyclopedia of Acoustics, 4 Volume set and the Handbook of Acoustics spin-off. These works, edited by Malcolm Crocker, positioned Wiley as a major player in the acoustics reference market. With our recently published revision of Beranek & Ver's Noise and Vibration Control Engineering, Wiley is a highly respected name in the acoustics business. Crocker's new handbook covers an area of great importance to engineers and designers. Noise and vibration control is one largest areas of application of the acoustics topics covered in the successful encyclopedia and handbook. It is also an area that has been under-published in recent years. Crocker has positioned this reference to cover the gamut of topics while focusing more on the applications to industrial needs. In this way the book will become the best single source of need-to-know information for the professional markets.