18496267. CMC Airfoil with Closed-Circuit Cooling Passage in Platform (RTX CORPORATION)
CMC Airfoil with Closed-Circuit Cooling Passage in Platform
Organization Name
Inventor(s)
Jonas Banhos of West Hartford CT US
Peter Wilkins of Glastonbury CT US
James T. Roach of Vernon CT US
Raymond Surace of Newington CT US
CMC Airfoil with Closed-Circuit Cooling Passage in Platform
This abstract first appeared for US patent application 18496267 titled 'CMC Airfoil with Closed-Circuit Cooling Passage in Platform
Original Abstract Submitted
An airfoil includes a platform and an airfoil section. The airfoil section and the platform are formed of a ceramic matrix composite (CMC) having fiber plies and a ceramic matrix, the fiber plies include first and second groups of core fiber plies that respectively define first and second radial tubes that circumscribe first and second internal cavities in the airfoil section. Skin fiber plies define an exterior of the airfoil section, wrap around the first and second groups of core fiber plies, and flare outwardly through a fillet into the platform. Platform fiber plies extend in the platform adjacent the skin fiber plies. There is at least one closed-circuit cooling passage defined in the fiber plies. The cooling passage initiates from the first internal cavity, extends within the platform, and ends at the second internal cavity.