... Abstract In line with target of the European Project “Shape Adaptive Blades for Rotorcraft Efficiency-SABRE”, that is to say, to mitigate the environmental impact of the rotorcraft, a Shape Memory Alloy (SMA) morphing twist systems was developed and related performance and impact predicted...

... Abstract In this work, attention is paid on two specific moments foreseen in the European Project “Shape Adaptive Blades for Rotorcraft Efficiency”: the test validation in wind tunnel and whirl tower representative environments of a morphing architecture aiming at altering the twist law...

... and fabricated, in which coiled nylon strings were installed as heat-induced contractive actuators replacing four of its tensile members to demonstrate the significant variability of the structural stiffness. Morphing under gravity due to the contraction of the actuators was observed, and the static behavior...

... with the observed response of 3D-printed PLA lattices. Through a parametric study, we explore the role of key geometric and stiffness parameters and identify desirable regions of the design space. The non-linear responses demonstrated by this topology morphing lattice structure may offer designers a route...

... media, such as rain, dust, insects and so on is much more important to allow a high lifetime and low maintenance effort. Therefore, a flexible and gapless morphing trailing edge has been designed within the SmartBlades projects at the German Aerospace Center (DLR) for the mentioned purpose. Based...

... the articulating cylinder by varying additional parameters like the individual heights of rows, the thicknesses of unit cell beams, the strain energy density, and the initial loading threshold for articulation. In addition, the work in this study can yield methodologies for designing arbitrarily morphing skins...

... to change its chord length. morphing rotor helicopter trailing edge chord extension CHORD MORPHING FOR HELICOPTER ROTOR BLADES Johannes Riemenschneider, Christoph Balzarek German Aerospace Center (DLR) Institute of Composite Structures and Adaptive Systems Lilienthalplatz 7 38108 Braunschweig...

... are not compatible with the typically low compliance of such airfoils. In recent years, research on airfoil morphing has generated interest in innovative ideas like the use of compliant systems, i.e. systems built to allow for large deformations without failure, in airfoil construction. Such systems can operate...