Influence Of Vane Sweep On Rotor Stator Interaction Noise
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Influence Of Vane Sweep On Rotor Stator Interaction Noise
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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-07-18
Influence Of Vane Sweep On 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 2018-07-18 with categories.
The influence of vane sweep in rotor-stator interaction noise is investigated. In an analytical approach, the interaction of a convected gust representing the rotor viscous wake, with a cascade of cascade of finite span swept airfoils, representing the stator, is analyzed. The analysis is based on the solution of the exact linearized equations of motion. High frequency convected gusts for which noise generation is concentrated near the leading edge of airfoils is considered. In a preliminary study, the problem of an isolated finite span swept airfoil interacting with a convected gust is analyzed. Results indicate that sweep can substantially reduce the farfield noise levels for a single airfoil. Using the single airfoil model, an approximate solution to the problem of noise radiation from a cascade of finite span swept airfoils interacting with a convected gust is derived. A parametric study of noise generated by gust cascade interaction is carried out to assess the effectiveness of vane sweep in reducing rotor-stator interaction noise. The results show that sweep is beneficial in reducing noise levels. Rotor wake twist or circumferential lean substantially influences the effectiveness of vane sweep. The orientation of vane sweep must be chosen to enhance the natural phase lag caused by wake lean, in which case rather small sweep angles substantially reduce the noise levels. Envia, Edmane and Kerschen, Edward J. Unspecified Center GUSTS; NOISE GENERATORS; NOISE REDUCTION; ROTOR STATOR INTERACTIONS; ROTORS; SOUND WAVES; STATORS; SWEEP ANGLE; SWEEP EFFECT; TURBOFAN ENGINES; VANES; WAKES; AIRFOILS; APPROXIMATION; EQUATIONS OF MOTION; HIGH FREQUENCIES; LEADING EDGES; MODELS; NOISE INTENSITY...
Influence Of Vane Sweep On Rotor Stator Interaction Noise
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Author : Edmane Envia
language : en
Publisher:
Release Date : 1989
Influence Of Vane Sweep On Rotor Stator Interaction Noise 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 1989 with categories.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1992
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 1992 with Aeronautics categories.
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.
Aeronautical Engineering
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Author :
language : en
Publisher:
Release Date : 1991
Aeronautical Engineering written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Aeronautics categories.
Fundamentals Of Aeroacoustics With Applications To Aeropropulsion Systems
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Author : Xiaofeng Sun
language : en
Publisher: Elsevier
Release Date : 2020-10-14
Fundamentals Of Aeroacoustics With Applications To Aeropropulsion Systems written by Xiaofeng Sun and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-10-14 with Technology & Engineering categories.
Fundamentals of Aeroacoustics with Applications to Aeropropulsion Systems from the Shanghai Jiao Tong University Press Aerospace series, is the go-to reference on the topic, providing a modern take on the fundamental theory and applications relating to prediction and control of all major noise sources in aeropropulsion systems. This important reference compiles the latest knowledge and research advances, considering both the physics of aerodynamic noise generation in aero-engines and related numerical prediction techniques. Additionally, it introduces new vortex sound interaction models, a transfer element method, and a combustion instability model developed by the authors. Focusing on propulsion systems from inlet to exit, including combustion noise, this new resource will aid graduate students, researchers, and R&D engineers in solving the aircraft noise problems that currently challenge the industry. - Updates the knowledge-base on the sound source generated by aeropropulsion systems, from inlet to exit, including combustion noise - Covers new aerodynamic noise control technology aimed at the low-noise design of next generation aero-engines, including topics such as aerodynamic noise and aero-engine noise control - Includes new, cutting-edge models and methods developed by an author team led by the editor-in-chief of the Chinese Journal of Aeronautics and Astronautics - Considers both the physics of aerodynamic noise generation in aero-engines and related numerical prediction techniques
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.
Evaluation Of An Aircraft Concept With Over Wing Hydrogen Fueled Engines For Reduced Noise And Emissions
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Author : Mark D. Guynn
language : en
Publisher:
Release Date : 2002
Evaluation Of An Aircraft Concept With Over Wing Hydrogen Fueled Engines For Reduced Noise And Emissions written by Mark D. Guynn and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Airplanes categories.
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.
Aiaa Journal
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Author : American Institute of Aeronautics and Astronautics
language : en
Publisher:
Release Date : 2006
Aiaa Journal written by American Institute of Aeronautics and Astronautics and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Aeronautics categories.