In spite of what the adverts inform you, drones crash on a regular basis. An excellent drone will take an unplanned descent and floor interface (aka: a crash) in stride, without the need of detrimental the frame. It will also involve shields to guard the rotors and electronics from harm. https://www.aeroindustrial.com/compra-drones-dji-y-accesorios-en-la-tienda-en-linea-de-aero-industrial/