single oscillating wing, the flow induced by the preceding half stroke permits the recycling of kinetic energy from the wake via the wake capture mechanism. In two-winged insects, the acceleration fields produced [...] shedding of vortices (LEV, TEV) at the end of the half stroke. Four-winged insects must cope with the fact that the flow over their hindwings is affected by the presence of the forewings. In these animals, a [...] Understanding the fluid dynamics of force control in flying insects requires the exploration of how oscillating wings interact with the surrounding fluid. The production of vorticity and the shedding of
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