Apparatus and method for active control of blade tip clearance
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United States of America Patent
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Aug 18, 2009
Grant Date -
Jan 25, 2007
app pub date -
Jul 1, 2005
filing date -
Jul 1, 2005
priority date (Note) -
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Abstract
An active blade clearance control system for a gas turbine engine. The clearance between the tip of a rotatable blade and an inner surface of a blade track is adjusted by moving the blade track relative to the tip of the blades. A split control ring is manipulated to adjust tension therein and a resulting force is transmitted to an inner member. The plurality of blade tracks are coupled to the inner member and move in response to the force transmitted from the split control ring.
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