Structural design and analysis of an anisotropic, bi-axially morphing skin concept

Morphing skins as structural component in shape adaptive wings are still their early development phase, they need to combine contradicting requirements, such extreme anisotropic mechanical behaviour, low thickness and air-tightness. Various morphing skin approaches have been designed for confined problems camber load scenarios. However, expand the applicability of wings, a with full in-plane deformability an out-of-plane stiffness suitable manned aircraft is necessary. In this work, novel, elastomer free layered designed, manufactured, applied transition region small analysed. The based on stacked, stiff platelets contributing stiffness, while compliant ligaments connecting provide compliance. Therefore, shows orthotropy can independently deform both directions initial modulus 198 kPa. Deformation analysis confirms bi-axial strains span chord up 10% 16%, respectively. Conducted pressure tests indicate high enough aircraft, despite demonstrator being manufactured from polymer. concept promising base bi-directionally deformable skins.