Imaging rotating turbine blades in a gas turbine engine
First Claim
1. A system for imaging a rotating turbine blade comprising:
- an image projector receiving a moving image of the rotating blade and projecting a movement-compensated image;
an image receptor receiving the movement-compensated image;
a sensor generating information indicative of a velocity of the rotating turbine blade; and
a processor generating a drive signal responsive to the information for controlling a position of the image projector to receive the moving image at a desired angular position and to project the movement-compensated image so that the movement-compensated image appears stationary relative to the image receptor.
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Accused Products
Abstract
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.
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Citations
16 Claims
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1. A system for imaging a rotating turbine blade comprising:
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an image projector receiving a moving image of the rotating blade and projecting a movement-compensated image;
an image receptor receiving the movement-compensated image;
a sensor generating information indicative of a velocity of the rotating turbine blade; and
a processor generating a drive signal responsive to the information for controlling a position of the image projector to receive the moving image at a desired angular position and to project the movement-compensated image so that the movement-compensated image appears stationary relative to the image receptor. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of imaging a rotating turbine blade comprising:
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positioning an image projector to receive a moving image of the rotating blade and to project a movement-compensated image;
receiving the movement-compensated image at an image receptor;
sensing a velocity of the rotating turbine blade;
controlling a position of the image projector to project the movement-compensated image so that the movement-compensated image appears stationary relative to the image receptor. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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Specification