Patent ID: 9540938
Date: 2017-01-10
CPC Classifications: F01D,F02C,F04D,F05D,Y02T,Y10T

Claim:
1. A method of assembling a fan exit guide vane assembly comprising: defining an airfoil shape that provides desired performance; defining a family of airfoils shapes including a common forward geometry and differing aft geometry; determining an acoustic performance characteristic for each of a plurality of circumferential positions; selecting an airfoil shape from the family of airfoil shapes for each circumferential position of the fan exit guide vane assembly based on an acoustic performance characteristic; defining a common axial position of a leading edge of each of the exit guide vanes and a common axial spacing of a trailing edge of each of the exit guide vanes from the leading edge; and installing vanes at each circumferential position of a fan exit guide vane assembly including the selected airfoils based on the acoustic performance characteristic.