Determination of local thrust coefficients of an aerospace component with the fibre Bragg grating array

Title
Determination of local thrust coefficients of an aerospace component with the fibre Bragg grating array
Authors
김경목권우철윤준용이종민황요하
Keywords
Thrust Coefficient; Fiber Bragg Grating; Rotor Blade; Blade Element Momentum Theory; Blade Deflection
Issue Date
2010-03
Publisher
Proceedings of the Institution of Mechanical Engineers. Part G, Journal of aerospace engineering
Citation
VOL 224, NO 3, 331-338
Abstract
This paper describes a novel thrust measurement on a rotating wooden blade using the fibre Bragg grating (FBG) array. Five FBG sensors created in a single fibrewere installed on the surface of a blade along the radial direction and oneFBGsensor was placed in the middle of a rotor shaft.Measurements were performed with two wooden blades under loading in hover and with a dynamicFBGinterrogator maintaining six channels for analysing optic signals.Distributed forces normal to the surface of a blade were determined with the assumptions of the Euler–Bernoulli beam theory, and local thrust coefficientswere calculated with blade element momentum theory (BEMT). Direct comparison between measured local thrust coefficient values and calculated ones was performed and good agreement was obtained on the local thrust coefficient versus the dimensionless radial distance chart. Additionally, the deflection shape of the blade in the flapwise direction was determined at various rotational speeds. Theoretical and experimental procedures described in this article offer an effective and improved method for the measurement and analysis of thrust coefficients for blade design as well as maintenance.
URI
http://pubs.kist.re.kr/handle/201004/37202
ISSN
0954-4100
Appears in Collections:
KIST Publication > Article
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