Design Selection And Analysis Of A Swept And Leaned Stator Concept Nasa Tm 1998 208662 Mar 1 1999
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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.
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
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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.
Performance Of A Straight Stator And A Tilted Stator Tested With A High Solidity High Pressure Ratio Transonic Rotor
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Author : Ralph L. Schacht
language : en
Publisher:
Release Date : 1959
Performance Of A Straight Stator And A Tilted Stator Tested With A High Solidity High Pressure Ratio Transonic Rotor written by Ralph L. Schacht and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1959 with Aerodynamics categories.
Designing For Change Minimizing The Impact Of Changing Requirements In The Later Stages Of A Spaceflight Nasa Tm 1998 208466 Mar 1 1999
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Author : United States. National Aeronautics and Space Administration
language : en
Publisher:
Release Date : 1999*
Designing For Change Minimizing The Impact Of Changing Requirements In The Later Stages Of A Spaceflight Nasa Tm 1998 208466 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.
Acoustic Benefits Of Stator Sweep And Lean For A High Tip Speed Fan
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Author :
language : en
Publisher:
Release Date : 2002
Acoustic Benefits Of Stator Sweep And Lean For A High Tip Speed Fan written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.
Study Of Boundary Layer Development In A Two Stage Low Pressure Turbine Nasa Tm 1999 208913 Mar 1 1999
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Author : United States. National Aeronautics and Space Administration
language : en
Publisher:
Release Date : 1999*
Study Of Boundary Layer Development In A Two Stage Low Pressure Turbine Nasa Tm 1999 208913 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.