System and method for measuring engine rotor thrust using Fabry-

Details System and method for measuring engine rotor thrust using Fabry- System and method for measuring engine rotor thrust using Fabry-

1998-12-18

2000-10-31

Turner, Samuel A.

Optics: measuring and testing

Material strain analysis

By light interference detector

356345, 356352, G01B 902

Patent

active

06141087&

ABSTRACT:
A system and method use an optical strain gage to measure engine bearing thrust. Reflecting surfaces, or mirrors, encapsulated in a housing, are separated by an initial gap. An incoming fiber receives light from an interferometer and transmits the light to the reflecting surfaces, which then reflect the light back to the interferometer. An engine load is introduced to a bearing element bonded to the housing, and the rotor thrust into the bearing element causes a change in the initial gap. An increase in the initial gap indicates tension and a decrease in the initial gap indicates compression.

REFERENCES:
patent: 5202939 (1993-04-01), Belleville et al.
patent: 5345519 (1994-09-01), Lu
patent: 5594819 (1997-01-01), Narendran et al.

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