Helicopter rotor blade control device

US6099254A · kind A · utility

Assignee

• ZF Luftfahrttechnik GmbH · DE

Inventors

• Achim Blaas · Kassel, DE
• Michael Platzer · Ansfelden, AT
• Hans-Jurgen Gotte · Vellmar, DE

Key dates

• Filing date: Dec 30, 1998
• Grant date: Aug 8, 2000
• Expiry date: Dec 30, 2018

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T50/30
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

In a helicopter having three or more rotor blades, and with mechanical actuation of the rotor blades by a swash plate and a superimposed electrohydraulic active control system, in addition to three regulating units (18) is an actuator (4) between a rotatable part (9) of the swash plate and a rotorblade mount (2) of each rotor blade. This arrangement allows for the safe actuation of individual blades in helicopter noise reduction, and increased efficiency at a modest constructional effort.