Airfoil having coolable leading edge region

Fluid reaction surfaces (i.e. – impellers) – With heating – cooling or thermal insulation means – Changing state mass within or fluid flow through working...

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415115, F01D 518

Patent

active

053741625

ABSTRACT:
A coolable rotor blade 16 having an airfoil section 18 is disclosed. Various construction details are developed which increase the cooling effectiveness under the airfoil section 18 under a variety of operative conditions. In one detailed embodiment, an array of rows of cooling air holes has two staggered rows in the spanwise direction which are spaced spanwisely in the row and chordwisely from row to row in a predetermined manner to ensure adequate cooling to the leading edge region should the aerodynamic leading edge shift.

REFERENCES:
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patent: 4474532 (1984-10-01), Pazder
patent: 4753575 (1988-06-01), Levengood et al.
patent: 5096379 (1992-03-01), Stroud et al.
patent: 5193975 (1993-03-01), Bird et al.
patent: 5271715 (1993-12-01), Zelesky et al.

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