Brushless DC electric motor (BLDC motors, BL motors) also known as electronically commutated motors (ECMs, EC motors), or synchronous DC motors, are sensored brushless motor powered by DC electricity via an inverter or switching power supply which produces an AC electric current to drive each phase of the motor via a closed loop controller. The controller provides pulses of current to the motor windings that control the speed and torque of the motor.
Powerful brushless motor exhibit reduced energy use, long life, low noise, compact size and light weight characteristics.
Choosing a good high power brushless motor can be easy and difficult at the same time. There's a few things to take in consideration when choosing one high speed brushless motor for your plane:
1- Prop size; Do you want the plane to be fast or slow? How much clearance do you have?
2- Amps; How many amps does the motor pull? More means more power
3- Voltage; 2s or 3s lipo? 2s would be better for smaller, lightweight planes.
4- kv; kv determines how fast the motor spins. Generally the higher the kv, the smaller the prop
Keep all of those in mind and you will be able to find the PERFECT motor for your plane.
5- Thrust; How heavy will the plane be? Heavier = need for more thrust to stay airborne
Your entire plane is built around your powerful rc motor and this is what you must choose first. When considering RC brushless motors there are several pieces of information you must take into account. The first is your drone parts motor KV. The KV of your motor is the number of revolutions per minute it will spin per volt. The lower the KV, the stronger the motor and as a result, you will want a larger propeller for maximum thrust. Often slower motors will also result in slower flying planes, a big plus for your first hobby grade RC drone. If you select a rc drone motor with a higher KV and a smaller propeller the speed of the thrust will be higher, and as a result your drone will fly faster.