Fiberoptic clearance detection system and method

Details Fiberoptic clearance detection system and method Fiberoptic clearance detection system and method

2011-08-30

2011-08-30

Le, Uyen Chau N (Department: 2883)

Optical waveguides

Optical waveguide sensor

C385S031000, C385S039000, C385S139000, C356S622000, C250S227110, C250S227230

Reexamination Certificate

active

08009939

ABSTRACT:
A fiberoptic system for clearance detection between rotating and stationary turbomachinery components is presented. The system comprises an optical fiber probe comprising a plurality of optical fibers, at least one of the optical fibers comprising a transmission fiber and at least one of the optical fibers comprising a signal fiber; a light source for providing light through the transmission fiber towards a target; filters for receiving light from the signal fibers, at least two of the filters for filtering different wavelengths; and at least one photodetector for receiving filtered light from the filters.

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R. J. Baumbick, “Fiber Optics for Aircraft Engine/Inlet Control,” U.S. Department of Commerce National Technical Information Service, N8131190, Sep. 1981, pp. 1-17.
S. Z. Cao et al., “Measurement of Rotating Blade Tip Clearance with Fibre-Optic Probe,” Journal of Physics: Conference Series, vol. 48, 2006, pp. 873-877.

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