Rotor drones generate lift by rotating.
As it moves forward under the pulling force provided by the power unit, the oncoming airflow blows the rotor to rotate like a windmill, thereby generating lift. Some rotorcraft are also equipped with fixed small wings, which provide part of the lift.
UAV rotors generate upward power through rotation, especially multi-rotor UAVs, which generate upward power through the rotation of motors. For example, for a quad-rotor drone, when the sum of the lift of the drone's four propellers is equal to the total weight of the aircraft, the lift of the drone balances the weight of the drone, and the drone can hover in the air. A helicopter rotor consists of several blades.
When rotating, it will push the air to create airflow. Whether to ascend or descend depends on adjusting the angle of attack of the rotor, not the rotational speed of the rotor. When the angle of attack of the rotor increases, the speed of the airflow pushed down by the rotor also increases, and the rotor will also experience greater reaction force.
The drone rotor is used to move forward and stop. The relativity of force means that when the rotor pushes the air, the air will push the rotor in the opposite direction. This is the basic principle why drones can go up and down. Additionally, the faster the rotor spins, the greater the lift. In order to turn the drone to the right, it is necessary to reduce the angular speed of rotor 1.
Mini-rotor UAV:
Micro-rotor UAV is the product of micro-electromechanical system integration, which is characterized by its ability to take off and land vertically, hover freely, control flexibly and adapt to various Advantages such as strong environmental capabilities have become the focus of many laboratory research at home and abroad.
System research on micro-rotor UAVs is mainly aimed at ground control systems and airborne measurement and control communication systems. The ground control system is capable of monitoring and commanding the flight attitude of UAVs; airborne measurement and control communications The system mainly collects data from inertial sensors, ultrasonic rangefinders, etc. while the UAV is in flight, and transmits these data to the ground control system.
UAVs can be divided into fixed-wing, rotary-wing and flapping-wing UAVs according to their flight characteristics. Among them, micro-rotor UAVs have small size, simple structure and flexible control. Features include the ability to take off and land vertically, hover freely, adapt to various natural environments, and have autonomous flight and landing capabilities.
It can operate in some complex and dangerous environments that are not suitable for humans to enter. In recent years, it has become increasingly important in scientific research institutions, government agencies, broadcast media, personal applications and military fields.