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US 12,240,144 B2Granted
Method for CMC airfoil using core tube of rigidized ceramic fabric
AssigneeRtx Corporation
InventorsChristian X. Campbell, Robert A. White, III
Life of this patent
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Abstract
A method of fabricating an airfoil includes providing an airfoil core tube that is made of a rigidized ceramic fabric, using the airfoil core tube as a mandrel by braiding a plurality of ceramic fiber tows around the airfoil core tube to form one or more braided layers, where the airfoil core tube and the one or more braided layers forming an airfoil preform, and densifying the airfoil preform with a ceramic matrix material to thereby form a ceramic matrix composite airfoil.
Claims9
A method for fabricating an airfoil, the method comprising:
- providing an airfoil core tube that has a cavity and that is made of a fabric that is at least partially densified with a ceramic matrix to provide a rigidized ceramic fabric;
- using the airfoil core tube as a surrogate mandrel, without a direct mandrel in the cavity, by braiding a plurality of ceramic fiber tows around the airfoil core tube to form one or more braided layers, the airfoil core tube and the one or more braided layers forming, at least in part, an airfoil preform;
- and
- densifying the airfoil preform with a ceramic matrix material to thereby form a ceramic matrix composite airfoil.
1 more element
Dependencies are inferred from the claim text.