TURBINE BLADE HAVING RESTART TURBULATORS

Abstract

A turbine blade includes an airfoil having first and second opposite sides and an internal passage extending longitudinally therebetween for channeling air to cool the airfoil. A single restart turbulator rib is disposed in the passage adjacent to the inlet and has a first height e1 for obtaining a first convective heat transfer enhancement. A plurality of primary turbulator ribs are disposed downstream from the restart rib in the passage. The primary ribs include an initial primary rib having a second height e2 for obtaining a second convective heat transfer enhancement, with the initial primary rib being spaced longitudinally from the restart rib at a first spacing S1, and spaced longitudinally from a second primary rib at a second spacing S2. The first enhancement is less than the second enhancement to reduce overcooling of the airfoil between the restart and primary ribs.

Source: Google Patents

35 USC §181 Secrecy Order

Inventor

• 1CRAIG R. JACOBSON

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