Helicopter

US6533549B1 · kind B1 · utility

Assignee

• ZF Luftfahrttechnik GmbH · DE

Inventors

• Thomas Schreiber · Berlin, DE
• Carsten Wintjen · An der Gradhöhe, DE
• Torsten Röhn · Fritzlar, DE

Key dates

• Filing date: Sep 6, 2001
• Grant date: Mar 18, 2003
• Expiry date: Sep 6, 2021

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B64C27/32
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A helicopter with rotor blades rotatably connected to a rotor head. The rotor head is non-rotatably connected with a rotor mast (1) pivoted in a transmission housing and driven by a transmission via at least one driving mechanism. A pitch of the rotor blades, relative to a plane of rotation of the rotor blades, is controlled via a swash plate, control rods (12) and via individual actuators (9) allocated to each individual rotor blade. The control rods (12) and the actuators (9) are mounted in the rotor mast (1) and the rotor head and those components act, via a mixing lever (11) and a control rod (8), upon a pivoted arm (7) which adjusts the pitch of the rotor blade. The control devices of the rotor blades do not interfere with the air flow, are affected only to a limited extent by centrifugal forces and additional stresses, and are also protected against influences of the weather.