Exhaust Ring and Method to Reduce Turbine Acoustic Signature
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United States of America Patent
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Issued Date -
May 12, 2011
app pub date -
Nov 6, 2009
filing date -
Nov 6, 2009
priority date (Note) -
Abandoned
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Abstract
Embodiments of the disclosure provide a turbine, an exhaust ring, and a method of reducing the acoustic signature of a turbomachine. In an embodiment, the turbine includes an exhaust ring disposed downstream from at least one stage of rotor blades and upstream from at least one fluid flow obstruction. An embodiment of the exhaust ring includes exhaust guide vanes having camber angles that are varied in a predetermined manner that cause a fluid flow to be diverted around a downstream obstruction in a manner that suppresses formation of a bow wave at the obstruction. An embodiment of the method includes adjusting a camber angle of a portion of a plurality of vanes, the camber angle directing a fluid flow around at least one fluid flow obstruction in a manner that suppresses formation of a bow wave at the fluid flow obstruction.
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