Mid-turbine frame assembly
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United States of America Patent
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Mar 30, 2021
Grant Date -
Oct 17, 2019
app pub date -
May 30, 2019
filing date -
Feb 3, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
A method of cooling a portion of a gas turbine engine includes positioning a tie rod relative to an inner frame case. The tie rod includes a bushing opening and the inner frame case includes a fastener opening. A fastener is secured through the fastener opening in the inner frame case to a threaded bushing located in the bushing opening. The threaded bushing includes a distal end that forms a clearance gap with the inner frame case. Heat is transferred from the fastener through the threaded bushing to prevent the fastener from creeping.
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