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The tail rotor system rotates airfoils, small wings called blades, that vary in pitch in order to vary the amount of thrust they produce.The blades most often utilize a composite material construction, such as a core made of aluminum honeycomb or plasticized paper honeycomb, covered in a skin made of aluminum or carbon fiber composite.
The tail rotor is a smaller rotor mounted so that it rotates vertically or near-vertically at the end of the tail of a traditional single-rotor helicopter. The tail rotor's position and distance from the center of gravity allow it to develop thrust in a direction opposite that of the main rotor's rotation, thereby countering the torque effect ...
However, it differs from a conventional open tail rotor by being integrally housed within the tail boom. While conventional tail rotors typically have between two and six blades, Fenestrons have between seven and eighteen blades; these may have variable angular spacing so that the noise is distributed over different frequencies. [6]
ITT Exelis awarded $15 million contract for composite tail rotor blade assemblies on Sikorsky's S-76D™ helicopter SALT LAKE CITY--(BUSINESS WIRE)-- ITT Exelis (NYS: XLS) has been awarded a ...
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 the applied pedal [5] Later designs known as 'NOTAR' use an air stream to provide anti-torque control instead of a tail rotor. This air stream is generated in the fuselage by a small ...
The initial programme, BERP I, studied the design, manufacture and qualification of composite rotor blades. This resulted in producing new main rotor and tail rotor blades for the Westland Sea King. Following on from the first, the second programme, BERP II, analysed advanced aerofoil sections for future rotor blades. This fed into the BERP III ...
Tail rotor failures which occur from either a mechanical malfunction of the tail rotor control system or a loss of tail rotor thrust authority, called "loss of tail-rotor effectiveness" (LTE). Brownout in dusty conditions or whiteout in snowy conditions. Low rotor RPM, is when the engine cannot drive the blades at sufficient RPM to maintain flight.
The helicopter rotor system consists of a two-bladed main rotor and two-bladed antitorque rotor on the tail, each equipped with a teetering hinge. The main rotor rotates with the starboard (right) side blade moving forward. The main rotor is also equipped with two coning hinges.
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