Steam turbine and rotating blade
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United States of America Patent
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Nov 1, 2011
Grant Date -
Jan 22, 2009
app pub date -
Jul 16, 2007
filing date -
Jul 16, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
A blade is mountable to a disc. The blade comprises a blade platform and a blade root extending from the blade platform. The blade root comprises a first hook and a second hook, a first neck between the first hook and the blade platform, and a second neck between the first hook and the second hook. Each hook comprises a contact surface and a non-contact surface. An angle between each contact surface and each non-contact surface is optimized to reduce local stresses.
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