Patent · US Expired

Rotor, rotocraft comprising a rotor of this type and method for adjusting the blade angle of a rotor

US7384238B2 · kind B2 · utility

3Cited by

6References

20Claims

0Family size

Assignee

Eurocopter Deutschland GmbH · DE

Inventors

Gerold Becker · Maisach, DE
Rupert Pfaller · Riemerling, DE

Key dates

Filing date	Apr 6, 2004
Grant date	Jun 10, 2008
Priority date	—
Expiry date	Jan 18, 2025

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB64C27/54
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A rotor, in particular for a rotorcraft, encompassing: a rotor head, at least one rotor blade, and a rotor-head-end rotor-blade connector having an integral, bearingless, centrifugal-force-controlled blade angle adjustment device. A rotorcraft, in particular a helicopter, in particular a tiltrotor helicopter, encompassing at least one such rotor. A method for adjusting the blade angle of a rotor blade of a rotor, in particular of a bearingless rotor that possesses a rotor head and a rotor-head-end rotor-blade connector, encompassing the following steps: rotating the rotor blade; and automatically adjusting the blade angle by twisting the rotor-head-end rotor-blade connector, and thus the rotor blade, about its longitudinal axis by means of centrifugal forces acting on the rotor blade.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.