Four-Winged Flapping Flyer in Forward Flight

摘要: We study experimentally a four-winged flapping flyer with chord-wise flexible wings in self-propelled setup. For given physical configuration of the (i.e. fixed distance between forewing and hindwing pairs wing flexibility), we explore kinematic parameter space constituted by frequency forewing-hindwing phase lag. Cruising speed consumed electric power measurements are performed for each point \((f,\varphi )\) allow us to discuss problem performance efficiency flight. show that different phase-lags needed system be optimised fastest flight or lowest energy consumption. A conjecture underlying mechanism is proposed terms coupled dynamics lag deformation kinematics wings.