Method for detecting damage to a rotor of an aircraft

US11267562B2 · kind B2 · utility

Assignee

• ZF FRIEDRICHSHAFEN AG · DE

Inventors

• Steffen Hahn · Hann. Münden, DE
• Jan Haar · Kammerberg, DE
• Uwe Arnold · Kassel, DE

Key dates

• Filing date: Jun 22, 2018
• Grant date: Mar 8, 2022
• Expiry date: Jul 8, 2038

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B64D2045/0085
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A method for detecting damages to a rotor of an aircraft, where the aircraft comprises actuators for active vibration reduction, may comprising one or more of the following steps: determining actuator variables in a reference flight of the aircraft; plotting the actuator variables of respective data range tiles determined in the reference flight of the aircraft in first coordinates of a coordinate system, wherein the coordinate system contains numerous data range tiles; obtaining the number of actuator variables in the reference flight of the aircraft that are located in each data range tile; eliminating the data range tiles that have a number of actuator variables lying below a limit value for this in the reference flight of the aircraft, by means of which a reference flight signature is created; and determining actuator variables for a flight-specific signature.