Aerodynamic blade attachment for a bearingless rotor of a helicopter

US9359071B2 · kind B2 · utility

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 5, 2013
• Grant date: Jun 7, 2016
• Expiry date: Oct 14, 2034

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B64C27/50
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

An aerodynamic blade attachment (1) for a bearingless rotor, particularly a main rotor, of a helicopter, comprising: an airfoil blade (2) having a tip end and a root end and having a pitch axis from said tip end to said root end; a flexbeam (3); a control cuff (4, 22) enclosing and extending along said flexbeam (3) and a separable junction arrangement between said flexbeam (3), said control cuff (4) and said root end of said airfoil blade (2). Said junction arrangement is mechanical between said flexbeam (3), said control cuff (4) and said root end of said airfoil blade (2). Removable fasteners (5, 6) connect said root end of said airfoil blade (2) and said control cuff (4) with said flexbeam (3). Said junction arrangement comprises fairing means (10, 27, 28, 31, 32 and 39) encompass the removable fasteners (5, 6) and said flexbeam (3).