Airfoil with venturi tube

Abstract

A method includes forming an airfoil, where the airfoil includes an airfoil wall that has a span between first and second radial ends and defines leading and trailing edges, pressure and suction sides each join the leading and trailing edges, and an internal cavity, the internal cavity is divided into at least first and second sub-cavities that extend over the span, and the first sub-cavity defines a venturi tube. The forming includes i) fabricating a fiber preform of the airfoil around a plurality of mandrels, wherein the mandrel in the first sub-cavity is radially split, and ii) densifying the fiber preform with a ceramic matrix. The airfoil may include an internal cavity that is divided into at least first and second sub-cavities extending over the span, where the first sub-cavity defines a venturi tube.

Dependencies are inferred from the claim text.