Clearance control between rotating and stationary structures
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United States of America Patent
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Jul 9, 2019
Grant Date -
Jan 18, 2018
app pub date -
Jul 18, 2016
filing date -
Jul 18, 2016
priority date (Note) -
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Abstract
Aspects of the disclosure are directed to a system of an engine, comprising: a clearance control thermal ring, and a seal ring, where a radial gap with respect to an axial centerline of the engine is formed between a radial end of the clearance control thermal ring and a facing radial surface of the seal ring, where the clearance control thermal ring is made of a first material and the seal ring is made of a second material that is different from the first material, and where a first coefficient of thermal expansion of the first material is less than a second coefficient of thermal expansion of the second material.
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