Torque balance. This is the key to maintaining balance in the air for all aircraft, including drones. Intuitively speaking, when all propellers of a drone are of the same specification: the propellers must exist in pairs, with the same number of positive and negative propellers and symmetrically distributed.

Compared to large drones, small drones are very convenient to operate. Skilled operators can fly in any direction to better meet shooting needs.

Details:

The drone utilizes the rotor to advance and stop. The relativity of force means that when the rotor pushes air, the air will also push the rotor in the opposite direction.

This is the basic principle of drones being able to move up and down. Furthermore, the faster the rotor rotates, the greater the lift, and vice versa.

Nowadays, drones can do three things: hover, climb, and lower.

When hovering, the thrust generated by the four rotors of the drone is equal to the downward gravity. This is very easy to understand. So how to achieve climbing?

Increase the thrust of the four rotors to generate an upward force greater than gravity. After completing this action, the thrust of the drone can be relatively reduced, but in order for it to continue flying upwards, it is still necessary to ensure that the upward force is greater than the downward force.