LondonA flapping-wing robot hit 57.2 grams of lift at 8 Hz.
The design suits flight inside collapsed buildings and dense canopy, or a bird-sized surveillance drone.
Insect-level lift needs both wings clapping within milliseconds, so researchers built a controller to synchronize their phase.
Engineers now have that phase-control method to refine across other insect-scale flapping designs.
Sources: Nature