Assembly and method for on-wing thrust measurement of aircraft engines

US11067461B2 · kind B2 · utility

Assignee

• LUFTHANSA TECHNIK AG · DE

Inventors

• Christian Werner-Spatz · Hamburg, DE
• Malte Blume-Werry · Ahrensburg, DE
• Jens Friedrichs · Trochtelfingen, DE
• Marc Bauer · Reutlingen, DE
• Detlev Wulff · Braunschweig, DE

Key dates

• Filing date: Sep 7, 2017
• Grant date: Jul 20, 2021
• Expiry date: Apr 3, 2038

Classification

• Technology area (CPC G): Physics
• CPC primary: G01L25/00
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method determines a thrust force of an aircraft engine that is attached to an aircraft by a force transferring element having a strain gauge for determining its strain state and a temperature sensor for measuring a surface temperature of the force transferring element adjacent to the strain gauge. The method includes: determining the surface temperature; determining a strain of the force transferring element; determining the strain state of the force transferring element based on the determined strain and compensating for temperature effects by taking into account the surface temperature, the compensation of the temperature effects taking into account both static and transient influences; and calculating the thrust force of the aircraft engine from the determined strain state.