Turbine rotor blade with coupon having corrugated surface(s)
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United States of America Patent
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Oct 22, 2019
Grant Date -
Jan 25, 2018
app pub date -
Jul 22, 2016
filing date -
Jul 22, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
A turbine rotor blade includes an airfoil body having a leading edge, a trailing edge and a smooth outer surface. A cutout is included within at least one of the leading edge and the trailing edge, the cutout removing a predetermined area of the airfoil body. A coupon is coupled in the cutout to replace the predetermined area of the airfoil body. The coupon includes a first corrugated surface on at least a portion of an outer surface thereof. The coupon allows for the addition of advantageous wake mixing and cooling efficiencies to preexisting blades.
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