Morphing wing design using integrated and distributed trailing edge morphing

Abstract

The presented study investigates the design and development of an autonomous morphing wing concept developed in the scope of the SmartX project, which aims to demonstrate in-flight performance optimisation with active morphing. To progress this goal, a novel distributed morphing concept with six translation induced camber morphing trailing edge modules is proposed in this study. The modules are interconnected using elastomeric skin segments to allow seamless variation of local lift distribution along the wingspan. A fluid-structure interaction optimisation tool is developed to produce an optimised laminate design considering the ply orientation, laminate thickness, laminate properties and actuation loads of the module. Analysis of the kinematic model of the integrated actuator system is performed, and a design is achieved, which meets the required continuous load and fulfils both static and dynamic requirements in terms of bandwidth and peak actuator torque with conventional actuators. The morphing design is validated using digital image correlation measurements of the morphing modules. Characterisation of mechanical losses in the actuator mechanism is performed. Out-of-plane deformations in the bottom skin and added stiffness of the elastomer are identified as the impacting factors of the reduced tip deflection.

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“…However, the designer must ensure the integrity of the assembly because it must withstand the applied stresses without buckling, fatigue or flutter. Often these two requirements are in conflict and a compromise solution must be found [12].…”

A piecewise inverse finite element method for shape sensing of the morphing wing fishbone

“…To overcome this limitation, morphing wing technology has emerged as a promising candidate for newly designed aircraft. This technology allows for changing the shape of the wing during flight, which can optimize the performance for increasingly complex and varied missions [1,2]. Shape sensing technology is the basis for the deformation control system which will work with the main accurate, and real-time monitoring of aerospace vehicles [8].…”