Hello, why do you hang an advertising banner similar to photo material under the drone? Wind pressure of unmanned aerial vehicle.

If a multi-rotor UAV is used to mount banners, a safe distance of 1-2 meters must be kept between the banners and the UAV (it is best to use wooden strips) to prevent the banners from being blown by the wind and winding around the blades of the multi-rotor, which is very dangerous. Of course, multi-rotor hanging banners, in fact, there is not much restriction on the material of banners. Instead, the fixed wing pulls the banner, which requires higher materials.