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Turbine rotor blade

  • US 10,001,019 B2
  • Filed: 03/04/2015
  • Issued: 06/19/2018
  • Est. Priority Date: 03/04/2015
  • Status: Active Grant
First Claim
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1. A turbine rotor blade comprising:

  • a tip portion having a pressure tip wall and a suction tip wall, a tip leading edge and a tip trailing edge;

    a squealer cavity at least partially defined by the pressure tip wall and the suction tip wall;

    a plurality of holes extending only through the suction tip wall at the leading tip edge, the plurality of holes configured to bleed a cooling flow out of the squealer cavity into a hot gas path to reduce pressure within the squealer cavity; and

    a main body having a suction side wall and a pressure side wall each extending from a root portion of the turbine rotor blade to the tip portion,wherein the plurality of holes extends from an internal surface of the suction tip wall to an external surface of the suction tip wall such that the external surface is in-line to the suction side wall.

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