Active Aeroelastic Control Over a Multisurface Wing: Modeling and Wind-Tunnel Testing

Numerical study on influence of single control surface on aero elastic behavior of forward-swept wing

“…L  And T  were the definitions of the leading-and the trailing-edge control surface skewness, and L  and T  were positive when the LC deflected up and TC down. The AAW technology was usually used in two ways [8]: the same deflection( LC deflected up and TC down) and different deflection (LC and TC deflected down). Therefore, it was studied the effects of the deflection of single control surface as the basis of the study of FSW static elastic response.…”

“…A large number of AAW technology studies have been carried out in recent years at home and abroad [7][8][9], the results show that the vehicle performance is greatly improved with multi-control surfaces, and it also takes the design of aerodynamic aspects, active control and structure design into consideration. As a result, the unfavorable factors of the flexible structure are transformed into favorable factors.…”

Applications of the unsteady vortex-lattice method in aircraft aeroelasticity and flight dynamics

“…Moreover, the advantages of state-space formulations have long been recognised for aircraft dynamic analysis [148][149][150][151]: powerful algebraic tools, root-locus stability, modern control techniques, which simplify the evaluation of transient solutions (dynamic loads, continuous gust response), aeroservoelastic analytical sensitivity derivatives, and load alleviation models. This section describes how both DLM-based (frequency domain) and UVLM-based (time domain) lifting-surface methods are transformed into convenient state-space form.…”

Active Aeroelastic Control using Multiple Control Surfaces Based on a High-Fidelity Reduced Order Model

“…The application of multiple control surfaces can reduce aerodynamic drag forces, increase flight safety and comfort, as well as improve aeroelastic control performance. 1,2) The Active Aeroelastic Wing (AAW) program presented by NASA 3,4) and the European Active Aeroelastic Aircraft Structures (3AS) wing program conducted by the EU [5][6][7][8] are major examples in which multiple control surfaces were used to actively improve wing responses and aircraft maneuverability.…”

“…Most of these cases only concentrated on subsonic and supersonic flow regimes, in which the low-fidelity linear aerodynamic models were used to construct the control plant models; e.g., the Theodorsen quasi-steady aerodynamic model, [9][10][11][12] the lift surface theory and the doublet-lattice method. 2,[6][7][8] However, these low-fidelity linear aerodynamic models cannot capture the dominant nonlinear unsteady aerodynamic behaviors (i.e., shock movement and flow separation) accurately in transonic flow, which have significant effects on nonlinear aeroelastic responses. 13,14) Thus, high-fidelity unsteady aerodynamic models with low order are required for active aeroelastic law design in transonic flow.…”