Modelling Aero-Structural Deformation of Flexible Membrane Kites

Airborne wind energy systems using flexible membrane wings have the advantages of a low weight, small packing volume, high mobility and rapid deployability. This paper investigates aero-structural deformation leading edge inflatable kite for airborne harvesting. In first step, triangular two-plate representation wing is introduced, to an analytical description geometry depending on symmetric actuation state. second this geometric constraint-based model refined multi-segment particle system approach. Each segment consists four point masses kept at constant distance along tubular frame by linear spring-damper elements. An empirical correlation used billowing wing’s trailing edge. The elements also line segments bridle system, with each connecting two masses. Three can be connected pulley model. aerodynamic force acting determined individually lift equation coefficient. predict in response lines depowering (i.e., changing pitch angle). reproduces typical twist asymmetric steering kite. simulated geometries are compared photogrammetric information taken onboard video camera control unit, focusing during flight. results demonstrate that accurately soft computational cost, making it ideal structural building block next generation models.