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DOUBLE WALL AIRFOIL COOLING CONFIGURATION FOR GAS TURBINE ENGINE

  • US 20190316472A1
  • Filed: 04/17/2018
  • Published: 10/17/2019
  • Est. Priority Date: 04/17/2018
  • Status: Abandoned Application
First Claim
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1. An airfoil comprising:

  • pressure and suction side walls extending in a chord-wise direction between leading and trailing edges, the pressure and suction side walls extending in a radial direction to provide an exterior airfoil surface, a core cooling passage is arranged between the pressure and suction walls in a thickness direction and extends radially toward a tip, an outer cooling passage is arranged in one of the pressure and suction side walls to form a hot side wall and a cold side wall, the hot side wall defines a portion of the exterior airfoil surface, and the cold side wall defines a portion of the core cooling passage, the core cooling passage and the outer cooling passage, and a cooling hole fluidly interconnects the core and outer cooling passages, the cold side wall has a first thickness and a protrusion extending from the cold side wall beyond the first thickness to a second thickness, the cooling hole arranged at least partially in the protrusion.

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