Transonic blade profiles
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United States of America Patent
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Feb 13, 2007
Grant Date -
Oct 6, 2005
app pub date -
Jun 4, 2004
filing date -
Mar 31, 2004
priority date (Note) -
Expired
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Abstract
The present invention relates to the aerodynamic design of moving blades, pertaining to later stages of axial steam turbines where the inlet flow is non-uniform over the blade height. The claim made herein is a set of six invented transonic blade profiles which can be used to develop various type of 3D twisted blades for axial steam turbine. The aerodynamic characteristics of these 6 base profiles are evaluated herein as a function of stagger angle and pitch/chord ratios.
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