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Showing 1 to 6 of 6 for “"Quasi-steady Aerodynamics"”.
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Shape and Structural Optimization of Flapping Wings
… Zimmerman method to describe the wing. A quasi-steady aerodynamics model is used to calculate the thrust and input power required during the flapping cycle. An assumed inflow model is derived based on lifting-line theory and is used to better approximate the effects of the induced drag on …
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Structural dynamics modeling of helicopter blades for computational aeroelasticity
… time steps. In the aeroelastic analysis, the steady state of a fixed wing at different flight speeds have been obtained and results are consistent with other methods. The time response of the active twist rotor (ATR) prototype blade in hover has also been examined. The twist response of ATR …
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Prediction of Limit Cycle Oscillation in an Aeroelastic System using Nonlinear Normal Modes
… airfoil with nonlinear pitch stiffness and quasi-steady aerodynamics. The asymptotic coefficient solution method successfully captured LCO at a low relative velocity. LCO was also successfully modeled for the same airfoil with an unsteady aerodynamics model with the use of a first order …
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Unsteady Nonlinear Aerodynamic Modeling and Applications
Unsteady aerodynamic modeling is indispensable in the design process of rotary air vehicles, flapping flight and agile unmanned aerial vehicles. Undesirable vibrations can cause high-frequency variations in motion variables whose effects cannot be well predicted using quasi-steady aerodynamics. …
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Robust scheduling control of aeroelasticity.
… interactions between structural mechanics and aerodynamics. Aeroelastic phenomena such as divergence and flutter are potentially destructive, and thus must be avoided. Passive methods to avoid undesirable aeroelastic phenomena often involve the addition of mass and/or limiting the achievable …
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Modeling Analysis and Control of Nonlinear Aeroelastic Systems
Airplane wings, turbine blades and other structures subjected to air or water flows, can undergo motions depending on their flexibility. As such, the performance of these systems depends strongly on their geometry and material properties. Of particular importance is the contribution of different …