Air cooled turbine blade
First Claim
Patent Images
1. A turbine blade for a gas turbine engine comprising:
- an airfoil having a leading edge and a trailing edge, and a pressure side wall and a suction side wall; and
,a 5-pass serpentine flow cooling circuit which includes a 3-pass forward flowing serpentine circuit and a 2-pass aft flowing serpentine circuit downstream from the 3-pass serpentine circuit, and the five legs of the serpentine flow cooling circuit being connected in series.
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Abstract
A turbine blade with a 5-pass serpentine flow cooling circuit for mid-blade cooling that is formed from a 3-pass forward flowing serpentine circuit followed by a 2-pass aft flowing serpentine circuit with the first leg or supply channel for the circuit located between the second leg and the fourth leg. A crossover channel connects the third leg to the fourth leg and passes underneath the blade tip to provide convective cooling and also discharges cooling air through tip cooling holes.
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Citations
17 Claims
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1. A turbine blade for a gas turbine engine comprising:
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an airfoil having a leading edge and a trailing edge, and a pressure side wall and a suction side wall; and
,a 5-pass serpentine flow cooling circuit which includes a 3-pass forward flowing serpentine circuit and a 2-pass aft flowing serpentine circuit downstream from the 3-pass serpentine circuit, and the five legs of the serpentine flow cooling circuit being connected in series. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A turbine blade for a gas turbine engine comprising:
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a leading edge region and a trailing edge region extending between a mid-chord region of an airfoil; a five-pass serpentine flow cooling circuit to cool the mid-chord region of the airfoil; the five-pass serpentine flow cooling circuit includes a first leg located in the mid-chord region, a second leg located forward of the first leg, a third leg located forward of the second leg, a fifth leg located rearward of the first leg, and a fifth leg located rearward of the fourth leg; and
,the five legs of the serpentine flow cooling circuit being connected in series. - View Dependent Claims (14, 15, 16, 17)
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Specification