The power plants of helicopters are roughly divided into two categories, namely aviation piston engines and aviation turboshaft engines.
Motor, also known as motor. This is very common in life, many toys are useful.
There is also a "power system" in the entire quadcopter (or other multicopter). This "power system" consists of an ESC, a motor and a blade.
For people, UAVs are mainly based on three aspects of agricultural applications and attract attention...