公开(公告)号：US11885228B2

公开(公告)日：2024-01-30

申请号：US17667793

申请日：2022-02-09

Applicant: General Electric Company

Inventor： Subramanya Shankar ,  Marc Christopfel ,  Brian G. Quinn ,  Omar A. Ramirez ,  Sean M. O′Melia

IPC: F01D21/00 ,  F01D11/14 ,  G01B11/14 ,  G01C9/02

CPC classification number: F01D21/003 ,  F01D11/14 ,  F05D2260/30 ,  F05D2260/80 ,  F05D2270/305 ,  F05D2270/804 ,  G01B11/14 ,  G01C9/02

Abstract: A system and method for inspecting fan blade clearances in a fan stator module are presented. The method includes rotating a fan rotor assembly that includes an attached bracket situated between adjacent fan blades connected to the fan rotor assembly. The bracket includes a laser module and an inclinometer configured to measure a circumferential position of the laser module. The method further includes projecting a laser beam from the laser module to the fan case to determine a distance measurement between the laser module and the fan case at multiple circumferential points around the fan case. The distance measurement and circumferential position data is processed by a computing device to determine a clearance distance between a fan blade and the fan case.