Impact of the fuselage damping characteristics and the blade rigidity on the stability of helicopter

The aim of this work is to compare in the system of blade articulations, the hydraulic and elastomeric dampers in order to reduce the vibration level in the helicopter rotors. Based on an aerodynamic model, a three-dimensional model of the composite material blade was developed. Numerical calculatio...

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Bibliographic Details
Published in:Aerospace science and technology 2013-08, Vol.29 (1), p.235-252
Main Authors: Chellil, A., Nour, A., Lecheb, S., Kebir, H., Chevalier, Y.
Format: Article
Language:English
Subjects:
Aerodynamic
Aeroelastic
Air transportation and traffic
Applied sciences
Blade
Blades
Composite materials
Computational fluid dynamics
Dampers
Elastomers
Exact sciences and technology
Fluid flow
Ground, air and sea transportation, marine construction
Hydraulics
Mathematical models
Rigidity
Vibration
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Summary:The aim of this work is to compare in the system of blade articulations, the hydraulic and elastomeric dampers in order to reduce the vibration level in the helicopter rotors. Based on an aerodynamic model, a three-dimensional model of the composite material blade was developed. Numerical calculations on the model developed taking into account the aeroelastic interaction prove that the elastomeric damper of viscoelastic type produces better results compared to other hydraulic damper. The study of the blade stability depending on the orientation of the composite fibers is an important factor to determine the rigidity of the structure.
ISSN:1270-9638
1626-3219
DOI:10.1016/j.ast.2013.03.007