Patent · US Active

Connection joint for attaching an airfoil blade to a helicopter's bearingless main rotor

US9714579B2 · kind B2 · utility

2Cited by

14References

20Claims

0Family size

Assignee

AIRBUS HELICOPTERS DEUTSCHLAND GMBH · DE

Inventors

Gerald Kuntze-Fechner · Waakirchen, DE
Markus Bauer · Oberkochen, DE
Martin Ortner · Unterhaching, DE

Key dates

Filing date	Mar 14, 2013
Grant date	Jul 25, 2017
Priority date	—
Expiry date	Jul 25, 2035

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB64C27/50
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

An airfoil blade (2) of a bearingless rotor of a helicopter. Said airfoil blade (2) has a pitch axis from a tip end to a root end and said root end is provided with junction means for a separable junction arrangement of said airfoil blade (2) with a flexbeam head (13), and a control cuff (4, 22). Said junction arrangement is mechanical with removable fasteners respectively removable connecting said root end of said airfoil blade (2) to said control cuff (4, 22) and said flexbeam head (13). Said root end comprises at least two openings (7, 8) being asymmetric with regard to said pitch axis.

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