Imaging rotating turbine blades in a gas turbine engine

摘要

A system ( 10 ) for imaging a rotating turbine blade ( 20 ) includes an image projector ( 12 ) receiving a moving image of the rotating blade and projecting a movement-compensated image. The system also includes an image receptor ( 14 ) for receiving the movement-compensated image. A sensor ( 16 ) is provided for generating information ( 28 ) indicative of a velocity of the rotating turbine blade and a processor ( 18 ) generates a drive signal ( 30 ) responsive to the information for controlling a position of the image projector. The image projector is controlled to receive the moving image at a desired angular position and to project the movement-compensated image to the image receptor so that the movement-compensated image appears stationary relative to the image receptor.