In spite of just what the advertisements tell you, drones crash constantly. A great drone will take an unplanned descent and ground interface (aka: a crash) in stride, without detrimental the frame. It can even contain shields to safeguard the rotors and electronics from damage. Inside their website, DJI stresses https://www.aeroindustrial.com/como-los-drones-industriales-estan-transformando-la-agricultura/