The rotor blades are pitched lower in the front of the rotor assembly than behind it. This increases the angle of attack -- and creates lift -- at the back of the helicopter. The unbalanced lift causes the helicopter to tip forward and move in that direction.

How does a helicopter turn around?

Unlike airplanes, helicopters feature spinning wings called blades or rotors on top. As a helicopter's blades spin, they create a force called lift that allows the helicopter to rise into the air. ... The rear rotor can face different directions, allowing the helicopter to move forward, backward, and sideways.

How do helicopters stay upright?

The reason why helicopters stay up in the air is because the individual rotary blades are shaped like airplane wings. Once the spinning rotor assembly has reached a certain speed, the curved blades chop up the air around them, creating lower pressure above the blade and higher pressure below.