The anti-torque system typically supplies a thrust at the tail of the aircraft to stop the CW motion, as shown. Anti-torque must be able to increase/decrease quickly for two reasons. First, various maneuvers like a “quick stop” cause sharp changes in main rotor torque.

The anti-torque pedals are located in the same place as the rudder pedals in an airplane, and serve a similar purpose—they control the direction that the nose of the aircraft points. Applying the pedal in a given direction changes the tail rotor blade pitch, increasing or reducing tail rotor thrust and making the nose yaw in the direction of ...

2024年9月16日 · Single rotor helicopters require a way to counter the torque created by turning the main rotor. There are three such options: Traditional tail rotor; Ducted fan or Fenestron; NOTAR; Video. The video below covers the three different types of anti-torque systems:

There are four main types of tail rotor or anti-torque systems on today’s helicopters. The most common is the multi-bladed rotor, the Fenestron from Airbus, the NOTAR from MD helicopters, then the helicopters with no tail rotor, like the chinook. Each counteracts the main rotor torque.

Using the natural characteristics of helicopter aerodynamics, the NOTAR antitorque system provides safe, quiet, responsive, foreign object damage (FOD) resistant directional control. The enclosed variable-pitch composite blade fan produces a low pressure, high volume of ambient air to pressurize the composite tailboom.

2022年10月10日 · The tail rotor or Fenestron’s purpose is to provide this anti-torque thrust towards the left to keep the nose of the helicopter pointing in a constant direction, both in forward flight and in the hover.

The main purpose of the tailrotor (or anti-torque rotor) is to prevent the helicopter from spinning, due to the engine's generated torque (in order to drive the main rotor system), and the reaction torque (Newton's Third Law) working on the fuselage.

In a single main rotor helicopter part of the power generated by the powerplant(s) is employed to counteract torque. The most common anti-torque device is a tail rotor, which is designed to compensate the torque produced by the main rotor.

2021年10月17日 · If we have a look at a helicopter with an anti-clockwise rotating blade system: The blades turn anti-clockwise, but they push themselves in that direction away from the fuselage. This causes the fuselage to turn in the opposite direction: clockwise. This is where the tail rotor (or anti-torque thrust) comes in.

2024年9月2日 · Anti-torque pedals, located on the floor of the cockpit, are essential for countering the torque effect generated by the helicopter’s main rotor. As the rotor spins, it creates a force that tends to rotate the helicopter’s fuselage in the opposite direction.