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- W2119140236 abstract "The aerodynamics at high-angle-of-attack is an unsteady and nonlinear phenomena in time. In this paper, we present a phenomenological and mathematically rigorous approach to nonlinear modeling of the unsteady aerodynamics based on Volterra variational equations. The model consists of dierential equations of internal states corresponding to dierent kernels of the Volterra series. The model structure is generic as the number of states can be chosen contingent on available wind tunnel test data and delity of the model desired. Model parameters are estimated using forced oscillation wind tunnel test data. We present modeling of the normal force coecient of a delta-wing aircraft. We nd that two-states are sucient for accurate modeling of the normal force coecient in small and large amplitude oscillations in pitch at dierent frequencies. We show that the model is consistent with various experimental observations reported in literature. In the end we compare it with other models proposed in literature." @default.
- W2119140236 created "2016-06-24" @default.
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- W2119140236 date "2012-08-13" @default.
- W2119140236 modified "2023-09-27" @default.
- W2119140236 title "Nonlinear Unsteady Aerodynamic Modeling by Volterra Variational Approach" @default.
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- W2119140236 doi "https://doi.org/10.2514/6.2012-4654" @default.
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