The tail rotor of the advanced rc helicopter is necessary to counteract main rotor torque. Otherwise, the helmet is rotated in the opposite direction to the main rotor (Newton's third law). However, it also creates problems of energy consumption, which can be used to protect the buoyancy for the personnel. For years, engineers have developed different versions to solve some of these problems. The idea is that, for the first time in 1960, was a fan duct.
Conventional tail rotor, generally two or four pages in the form of the blade is 8-13. The blades are also much smaller, high-speed and shape, in turn, is mounted in the housing vertical tail of the helicopter. Fantail call (or, sometimes, a fan at the end) and the steering wheel incorporates the case in the tail. Another member Fenestron helicopters and French-made Eurocopter brand.
Some of the main advantages of the fan duct design are a good protection against dirt and foreign barriers to improving the security of land team works around the tail and greater aerodynamic efficiency. Moreover, the wheels so as to reduce noise and vibration. However, the rc helicopter rotor blades is more complex than the weight of the tail rotor classic and cool. Furthermore, the impeller width sufficient to be effective, adding a resistor. High efficiency fin curve flight forward, but can induce demanding collateral.
Fenestron Eurocopter has been constant over the past 35 years and currently EC120, EC130, EC135, EC155 and AS365 used. Fenestron has features like stators and weight control in electricity demand and control in order to reduce stress. It is also used in the design, even the number of blades is not the same distance from the noise reduction. Although Eurocopter currently dominated designs user rotates his Metal Gyro RC Helicopter tail rotor with other manufacturers also built with this project. For example, the Boeing / Sikorsky RAH-66 Comanche, Russian Kamov Ka-60 military helicopters and Japanese, OH-1 Kawasaki Ninja.
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