Curved tooth coupling for a miniature gas turbine engine
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United States of America Patent
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Jul 10, 2012
Grant Date -
Aug 27, 2009
app pub date -
Feb 22, 2008
filing date -
Feb 22, 2008
priority date (Note) -
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status (Latency Note)
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Abstract
A rotor assembly for a miniature gas turbine propulsion system comprises a centrifugal compressor wheel, a turbine wheel, a shaft and a tie bolt. The centrifugal compressor wheel includes a first curved tooth coupling, and the turbine wheel includes a second curved tooth coupling interconnected with the first curved tooth coupling. The shaft extends from the centrifugal compressor wheel, and the tie bolt extends between the shaft and the turbine wheel to bring the first curved tooth coupling into compression with the second curved tooth coupling. As such, the compressor wheel and the turbine wheel are assembled and remain, over the operational envelope of the propulsion system, in a reliably robust aligned configuration.
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