18456159. CMC VANE WITH DETUNED PLATFORM (RTX Corporation)
Contents
CMC VANE WITH DETUNED PLATFORM
Organization Name
Inventor(s)
Cheng Gao of South Glastonbury CT (US)
David J. Wasserman of Hamden CT (US)
Thomas S. Heylmun of Palm City FL (US)
CMC VANE WITH DETUNED PLATFORM
This abstract first appeared for US patent application 18456159 titled 'CMC VANE WITH DETUNED PLATFORM
Original Abstract Submitted
A method is disclosed for a design geometry of a ceramic matrix composite (CMC) vane arc segment that has a platform and an airfoil section that extends off of the platform. The platform defines an axially trailing face, an axially leading face that is circumferentially offset from the axially trailing face, and first and second circumferential faces. In the method, a modal excitation response of the platform is determined based upon an external engine operation excitation frequency. If the modal excitation response is greater than a target modal excitation response, the design geometry of the platform is adjusted to be detuned with the external engine operation excitation frequency by reducing an overhang distance of the platform in which the modal excitation response at the external engine operation excitation frequency is equal to or lower than the target modal excitation response.
