Product overview
United Aircraft Bearingless Rotor Blades form part of a helicopter rotor system that uses composite flexible beams in place of traditional hinges and bearings. Blade flapping, lead-lag and feathering motions depend on the hub support arms and elastic deformation of the blades. This configuration combines those movements in a simplified structure designed for low weight, reduced hub drag and ease of maintenance. United Aircraft has developed and put bearingless rotors into use on multiple platforms.
The specified 6 m bearingless rotor configuration has a rotating speed of 540 RPM and a distance between the upper and lower rotors equal to 8.5% of the rotor diameter. United Aircraft also applies a bearingless hub with integrated composite flexible beams to the T333 unmanned helicopter, whose rotor diameter is 10.2 m. The T333 rotor system incorporates the company's electrically controlled coaxial rotor technology.
Specifications
| Specification | Value & conditions |
|---|---|
| Rotor construction | Composite flexible beams replace traditional hinges and bearingsBearingless rotor configuration |
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