Tie shaft arrangement for turbomachine
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United States of America Patent
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Sep 1, 2015
Grant Date -
Oct 10, 2013
app pub date -
Apr 9, 2012
filing date -
Apr 9, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A turbomachine includes a tie shaft extending along an axis. Multiple rotors are mounted on the tie shaft. First and second clamping members are secured to the tie shaft and exert a clamping load between the rotors and clamping members at multiple interfaces. The clamping load at one of the interfaces includes a radial clamping load of greater than 5% of a total design clamping load at the one interface. In one example, one of the clamping members is provided by a hub including a first leg extending between first and second opposing ends. The first end provides a flange configured to be supported by the tie shaft. The second end includes first and second hub surfaces respectively extending in radial and axial directions. The first leg is inclined between 15° and 75° relative to the axial direction.
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