Physicists from the Russian Federation have modeled drones with "flapping" wings.
Most modern UAVs are built according to the plan of the helicopter or the plane. Both have disadvantages: they are noisy, hazardous in terms of energy and are not very agile. Therefore, engineers have been trying for a long time to build an ornithopter. A device that flaps its wings like a live bird, therefore becoming quieter and more portable. Scientists from MIPT, along with their colleagues, have calculated exactly how such a UAV should work to generate thrust. And they discovered the unexpected: even a simple flat wing without a profile can pull the device forward. If you wave at the right frequency.