Patent · US Active

Elastic flapping hinge for connecting a rotor blade to a rotor hub of a rotary wing aircraft

US10967965B2 · kind B2 · utility

0Cited by

5References

20Claims

0Family size

Assignee

AIRBUS HELICOPTERS DEUTSCHLAND GMBH · DE

Inventors

Moritz BUESING · Augsburg, DE
Rupert Pfaller · Riemerling, DE
Martin Ortner · Unterhaching, DE

Key dates

Filing date	Aug 21, 2018
Grant date	Apr 6, 2021
Priority date	—
Expiry date	Oct 13, 2038

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB64C27/635
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

An elastic flapping hinge for connecting a rotor blade to a rotor hub of a rotary wing aircraft, comprising an elastic flapping hinge member arrangement that includes a hub attachment area for attachment to the rotor hub, a connection area for attachment to the rotor blade, and an elastic flapping hinge area that is arranged between the hub attachment area and the connection area and adapted to allow flapping movements, the elastic flapping hinge member arrangement comprising at least two elastic flapping hinge members having a first bending stiffness for flapping movements and a second bending stiffness for lead-lag movements, the first bending stiffness being smaller than the second bending stiffness, wherein the at least two elastic flapping hinge members diverge from each other in the elastic flapping hinge area by a predetermined divergence angle.

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