“Advanced Tactics Inc. has now received permission from the US government to release video footage showing the first test flight of its Black Knight Transformer prototype demonstrator.”
Robots clean rivers and sort waste, monitor ecosystems, and inspect renewable-energy infrastructure. But even the greenest robot has an environmental footprint.
EPFL engineers have designed acoustic cavities that convert sound waves into thrust, propelling small robots and ultralight aerial vehicles without on-board actuators or electronics.