Object-Oriented Unsteady Vortex Lattice Method for Flapping Flight
نویسندگان
چکیده
منابع مشابه
Applications of the Unsteady Vortex-Lattice Method in Aircraft Aeroelasticity and Flight Dynamics
The Unsteady Vortex-Lattice Method provides a medium-fidelity tool for the prediction of non-stationary aerodynamic loads in low-speed, but high-Reynolds-number, attached flow conditions. Despite a proven track record in applications where free-wake modelling is critical, other less-computationally-expensive potential-flow models, such as the Doublet-Lattice Method and strip theory, have long b...
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α angle of attack, rad Γ circulation, m2s−1 λ wake wavelength, m ρ∞ free-stream air density, kgm −3 τ panel tangential vector ω angular velocity, rad s−1 a non-dimensional distance between aerofoil mid-chord and centre of rotation A panel area, m b semi-chord, m ∆b panel span, m B wingspan, m c aerofoil chord, m ∆c panel chord, m C Theodorsen’s function, C(k) = F (k) + iG(k) Cd sectional drag c...
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Introduction: The flight of insects and birds and the swimming of fish have been sources of continuous fascination throughout the ages. Observation and controlled experimentation have historically been the main sources of information on performance. The mathematical description of the performance of flying creatures has been limited, due to the previously insurmountable difficulties associated ...
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State-space representation of the unsteady aerodynamics of flapping flight" (2014). ARTICLE INFO ABSTRACT Article history: A state-space formulation for the aerodynamics of flapping flight is presented. The Duhamel's principle, applied in linear unsteady flows, is extended to non-conventional lift curves to capture the LEV contribution. The aspect ratio effects on the empirical formulae used to...
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The aerial environment in the operating domain of small-scale natural and artificial flapping wing fliers is highly complex, unsteady and generally turbulent. Considering flapping flight in an unsteady wind environment with a periodically varying lateral velocity component, we show that body rotations experienced by flapping wing fliers result in the reorientation of the aerodynamic force vecto...
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ژورنال
عنوان ژورنال: Journal of Aircraft
سال: 2004
ISSN: 0021-8669,1533-3868
DOI: 10.2514/1.7357