Operating principle of helicopter

How the helicopter works. How does it change the flight direction?

Learn the operating principle of helicopters

Main rotor

The task of the propeller is to create lift to overcome the gravity of the aircraft to lift it in the air. Lift force is generated by interaction with the atmosphere. In the process of turning the fan into the air a force and vice versa, according to the law of 3, the air acts on a propeller upward. So when there is no air lift, this lift will not - or in other words, cannot fly a helicopter to the moon, no matter how big the engine's capacity is. Because between the earth and the moon is a vacuum.

Lift force upward

By changing the rotating plane of the main fan, the aircraft will fly forward and backward or fly right to left.

Tail fan

Tail rotor is very important because according to the law to preserve the momentum moment when the main rotor rotates clockwise, the rest of the plane will tend to rotate in the opposite direction. (picture)

The TORQUE REACTION will be eliminated by the tail rotor.

Tail propellers will create an equilibrium moment with the torque caused by the main rotor.

In addition, by changing the capacity of the tail rotor, the aircraft can turn right to left easily.

Tailrotor is connected to the main rotor (main Rotor) thanks to a drive system as shown below:

There are also helicopters with no tail rotor, then two main propellers are used in opposite directions. The lifting force of these two rotors is all upward, but the momentum of momentum destroys each other. When you want to change the direction of flight, one must change the capacity of one of the two propellers so that the torque of one of the 2 blades wins.

Structure and operation of aircraft wings

How do people build helicopters?

Modern technology makes helicopter production easier and more diverse. However, the stages must still have certain standards.

First, in terms of design, helicopters can be operated thanks to one of two main types of engines on the principle of piston or gas turbine. These motors help the motion rotor system.

Ka-52 is a twin-rotor helicopter with coaxial lift from the Russian Air Force.(Photos: Wikipedia.)

Helicopters have propeller systems consisting of two to six blades attached to a central axis. They often have relatively long lengths and small widths, slow motion makes it easier to control helicopters. To minimize weight, light helicopters now only have two propellers mounted. Materials used to manufacture helicopters are usually made of metal or composite compounds or a combination of both.

Production process of a helicopter