Patent · US Active

Blade attachment for a bearingless rotor of a helicopter

US9718542B2 · kind B2 · utility

2Cited by

22References

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	Aug 1, 2017
Priority date	—
Expiry date	May 20, 2035

Classification

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

Abstract

A blade attachment (1, 20) for a bearingless main rotor of a helicopter with an airfoil blade (2), a flexbeam (3, 21) including a flexbeam body (16, 17) and a flexbeam head (13) at an end of the flexbeam body (16, 17). A control cuff (4, 22) encloses and extends along at least a predominant portion of the flexbeam (3, 21). A separable junction arrangement between the flexbeam head (13), the control cuff (4, 22) and the root end of the airfoil blade (2) is mechanical with removable fasteners. The removable fasteners comprise a main bolt (7) and at least one supporting bolt (8).

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