THE IMPORTANCE OF TORSION IN THE DESIGN OF INSECT WINGS

摘要: A model insect wing is described in which spars of corrugated membrane incorporate stiffening veins branch serially from a V-section leading edge spar. The mechanical behaviour this analysed. The open, possess great resistance to bending, but are compliant torsion. Torsion the spar will result torsion and relative movement rear spars. As camber automatically be set up as it twists. Aerodynamic forces produced during strokes should improve its aerodynamic efficiency. The effects varying parameters examined. For given torsion, higher by branching at lower angle, curve posteriorly, diverge each other. Wings three species flies were subjected two series tests. Application force behind torsional axis caused wings twist develop camber. Immobilizing basal regions greatly reduced compliance camber, predicted theoretical model. Aerodynamic half-stroke sufficient produce observed values maintain changes pitch inertial stroke reversal.