Specially shaped helicopter rotor blades with a kink at the outer part make it possible to reduce the radiating ... the rotor blades are therefore exposed to extreme torsional loads and vibrations ...

However, one Bell helicopter has four small tail fans instead ... linkage gearboxes play the major role by controlling the blade pitch for each rotor and by providing them different pitch angles ...

The fundamental design principles behind rotary-wing aircraft date back to the Renaissance, with some of the earliest-known designs belonging to Leonardo da Vinci. Naturally, technology has ...

The Throttle on the Collective Control feeds power to match the blade pitch. And, finally, foot pedals control the tail rotor to point the helicopter in a particular direction. Dealing with all ...

Rotors also include the ability to vary the blade pitch as it rotates cyclically, enabling control of the aircraft attitude using just the rotor. Thus, rotorcraft — helicopters, autogyros ...