Transient Aeroelastic Modeling and Analysis Framework for a Dual-Morphing Wing

The morphing technique is a valuable green aviation technology for improving aircraft aerodynamic performance, but it may introduce aeroelastic risks during time-varying morphing. In this paper, a novel transient aeroelastic modeling framework is proposed to investigate the aeroelastic characteristics of a dual-morphing wing. Firstly, an innovative assembly dual-morphing wing design is presented, with a corresponding prototype manufactured. Two primary segments are responsible for the continuous variable camber and wingtip folding, respectively. Then, a time-varying aeroelastic modeling methodology for a dual-morphing wing is presented that combines the (enhanced) Craig-Bampton, fictitious-mass, and unsteady vortex-lattice methods. The time-varying aeroelastic analysis was efficiently conducted to investigate the aeroelastic characteristics under different conditions. Finally, ground vibration and wind-tunnel tests were conducted to validate the design's practicality and effectiveness, as well as the accuracy of the proposed modeling method.