FLUID-STRUCTURE INTERACTION ANALYSIS OF HINGELESS ROTOR BLADES IN HOVER CONSIDERING WAKE EFFECTS

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Aeroelastic analysis of hingeless rotor blades in hover was performed. Large deflection beam theory was applied to analyze blade motions with effects of geometric structural nonlinearity. Aerodynamic loads for aeroelastic analysis were calculated through a three-dimensional aerodynamic model which is based on the unsteady vortex lattice method. Wake geometry was described using a time-marching free-wake method. Lead-lag damping ratio and frequency were calculated to evaluate aeroelastic stability of hingeless rotor system. Numerical results of aeroelastic analysis for hingeless rotor blades were presented and compared with results based on experimental data and two-dimensional quasi-steady strip theory in which uniform inflow model was used. It was shown that wakes significantly affect the steady-state deflections and aeroelastic stability.
Publisher
WORLD SCIENTIFIC PUBL CO PTE LTD
Issue Date
2010-05
Language
English
Article Type
Article; Proceedings Paper
Citation

MODERN PHYSICS LETTERS B, v.24, no.13, pp.1475 - 1478

ISSN
0217-9849
URI
http://hdl.handle.net/10203/94890
Appears in Collection
AE-Journal Papers(저널논문)
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