An experimental method for the investigation of subsonic stall flutter in gas turbine engine fans and compressors

A facility for the investigation of stall flutter in aircraft engine compressors and fans was designed. Stall flutter was achieved in the test fan and verified through sonic and photographic methods. The frequency components of the sonic output during flutter were determined using a real-time analyz...

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Bibliographic Details
Main Author:	Copenhaver, William Ward
Other Authors:	Mechanical Engineering
Format:	Others
Language:	en_US
Published:	Virginia Polytechnic Institute and State University 2017
Subjects:	LD5655.V855 1978.C674 Airplanes > Turbine-propeller engines Gas-turbines > Vibration Gas-turbines > Blades
Online Access:	http://hdl.handle.net/10919/74137

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spelling	ndltd-VTETD-oai-vtechworks.lib.vt.edu-10919-741372020-09-29T05:44:25Z An experimental method for the investigation of subsonic stall flutter in gas turbine engine fans and compressors Copenhaver, William Ward Mechanical Engineering LD5655.V855 1978.C674 Airplanes -- Turbine-propeller engines Gas-turbines -- Vibration Gas-turbines -- Blades A facility for the investigation of stall flutter in aircraft engine compressors and fans was designed. Stall flutter was achieved in the test fan and verified through sonic and photographic methods. The frequency components of the sonic output during flutter were determined using a real-time analyzer. This frequency analysis indicated a dominant peak within 7 percent of the theoretical torsional natural frequency of the blades. Photographs taken during stall flutter indicated the presence of an interblade phase angle. The effect of blade stagger angle, flow incidence angle and solidity on flutter speed was determined. Master of Science 2017-01-10T20:35:10Z 2017-01-10T20:35:10Z 1978 Thesis Text http://hdl.handle.net/10919/74137 en_US OCLC# 6719620 In Copyright http://rightsstatements.org/vocab/InC/1.0/ vii, 50 p. application/pdf application/pdf Virginia Polytechnic Institute and State University
collection	NDLTD
language	en_US
format	Others
sources	NDLTD
topic	LD5655.V855 1978.C674 Airplanes -- Turbine-propeller engines Gas-turbines -- Vibration Gas-turbines -- Blades
spellingShingle	LD5655.V855 1978.C674 Airplanes -- Turbine-propeller engines Gas-turbines -- Vibration Gas-turbines -- Blades Copenhaver, William Ward An experimental method for the investigation of subsonic stall flutter in gas turbine engine fans and compressors
description	A facility for the investigation of stall flutter in aircraft engine compressors and fans was designed. Stall flutter was achieved in the test fan and verified through sonic and photographic methods. The frequency components of the sonic output during flutter were determined using a real-time analyzer. This frequency analysis indicated a dominant peak within 7 percent of the theoretical torsional natural frequency of the blades. Photographs taken during stall flutter indicated the presence of an interblade phase angle. The effect of blade stagger angle, flow incidence angle and solidity on flutter speed was determined. === Master of Science
author2	Mechanical Engineering
author_facet	Mechanical Engineering Copenhaver, William Ward
author	Copenhaver, William Ward
author_sort	Copenhaver, William Ward
title	An experimental method for the investigation of subsonic stall flutter in gas turbine engine fans and compressors
title_short	An experimental method for the investigation of subsonic stall flutter in gas turbine engine fans and compressors
title_full	An experimental method for the investigation of subsonic stall flutter in gas turbine engine fans and compressors
title_fullStr	An experimental method for the investigation of subsonic stall flutter in gas turbine engine fans and compressors
title_full_unstemmed	An experimental method for the investigation of subsonic stall flutter in gas turbine engine fans and compressors
title_sort	experimental method for the investigation of subsonic stall flutter in gas turbine engine fans and compressors
publisher	Virginia Polytechnic Institute and State University
publishDate	2017
url	http://hdl.handle.net/10919/74137
work_keys_str_mv	AT copenhaverwilliamward anexperimentalmethodfortheinvestigationofsubsonicstallflutteringasturbineenginefansandcompressors AT copenhaverwilliamward experimentalmethodfortheinvestigationofsubsonicstallflutteringasturbineenginefansandcompressors
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An experimental method for the investigation of subsonic stall flutter in gas turbine engine fans and compressors

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