Actuatable seal for aerofoil blade tip
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United States of America Patent
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Sep 24, 2013
Grant Date -
Jan 6, 2011
app pub date -
Jun 17, 2010
filing date -
Jul 1, 2009
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The present invention relates to an actuatable seal (14) for an aerofoil blade tip, for providing a seal between the blade tip (12) and an adjacent surface (10) over which the blade tip passes in use. The seal comprises a flexible member that is arranged in use to be mounted on the tip of a rotating aerofoil blade and to flex towards the surface under the action of centrifugal force when the blade rotates. The seal further comprises an actuator means provided on the flexible member and operably arranged in use to deflect at least a portion of the flexible member away from the surface.
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