Patent · US Expired

Rotor and gyrocopter with said rotor

US7275913B2 · kind B2 · utility

5Cited by

7References

31Claims

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	Oct 2, 2007
Priority date	—
Expiry date	Apr 6, 2024

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB64C27/32
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A rotor, comprising at least one rotor blade connectable to a rotor head, which rotor blade possesses a blade neck having a virtual flapping hinge in the form of a flexurally soft, flexurally elastic blade-neck portion, there being provided, in a blade-connector region of the blade neck, two auxiliary flapping hinges, spaced apart from one another in the radial longitudinal direction of the rotor blade with reference to a rotor radius, between which the virtual flapping hinge is substantially disposed and between which the blade neck is deformable in flexurally elastic and curved fashion in the context of a flapwise motion. A rotorcraft, in particular a helicopter, in particular a tiltrotor helicopter, having at least one such rotor.

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