The model-free control of aeroelastic vibrations of a non-linear 2-D wing-flap system operating in supersonic flight speed regimes is discussed in this paper. A novel continuous robust controller design yields asymptotically stable vibration suppression in both the pitching and plunging degrees of freedom using the flap deflection as a control input. The controller also ensures that all system ...

This paper investigates the possibility that an adaptive feedback controller can be designed and implemented for the suppression of aircraft’s structural vibration in the presence of any aeroelastic/aeroservoelastic interaction, instead of using the non-adaptive notching filters. Currently aircraft with non-adaptive control laws usually include roll-off or notch filters to avoid AE/ASE interact...

Level-set topology optimization is used to design a wing considering skin buckling under static aeroelastic trim loading, as well as dynamic aeroelastic stability (flutter). The level-set function is defined over the entire 3D volume of a transport aircraft wing box. Therefore, the approach is not limited by any predefined structure and can explore novel configurations. The Sequential Linear Pr...

A very flexible unmanned aerial vehicle has been designed and manufactured at the University of Michigan. The vehicle is named X-HALE, whose flight tests are expected to provide important data of its geometrically nonlinear aeroelastic behavior coupled with the six rigid-body degrees of freedom. As the target of the aeroelastic design, the X-HALE vehicle will present unstable aeroelastic/flight...

Abstract This paper presents an extensive review of the developments in aeroelasticity morphing aircraft that occurred last decade (from 2009 to 2020). It focuses mainly on fixed-wing and highlights some representative examples from rotary-wing aircraft. Morphing wings are usually associated with significant changes aerodynamic loads, structural/elastic properties, inertial properties hence aer...

The ‘‘stick’’ type aeroelastic model, referred to here as ‘‘aeroelastic balance,’’ has served as an effective tool for investigating wind-induced response of tall buildings and towers in both fundamental research as well as design applications. However, some questions still remain unaddressed in the available literature regarding the efficacy of the aeroelastic balance as a design tool. These c...

The paper deals with unstable aeroelastic modes for aircraft wing model in subsonic, incompressible, inviscid air flow. In recent author's papers asymptotic, spectral and stability analysis of the model has been carried out. The model is governed by a system of two coupled integrodifferential equations and a two-parameter family of boundary conditions modelling action of self-straining actuator...