Aircraft braking device having a sensor for measuring the braking torque of said device

The mechanical attachment of a sensor to the actuator housing in the aircraft wheel braking device addresses measurement inaccuracies, enhancing precision and reliability by reducing temperature sensitivity and simplifying maintenance.

WO2025253014A1PCT designated stage Publication Date: 2025-12-11SAFRAN LANDING SYSTEMS
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Patent Information

Application Number
PCT/EP2025/065948
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2025-01-13
Filing Date
2025-06-06
Publication Date
2025-12-11

AI Technical Summary

Technical Problem

Existing aircraft wheel braking torque measurement systems suffer from inaccuracies due to adhesive bonding methods and temperature-dependent hysteresis, leading to errors in strain gauge measurements.

Method used

A braking device with a mechanical attachment of a sensor to the actuator housing, using a body with a sensing component to measure deformation, which is less sensitive to temperature and provides more reliable stress transmission.

Benefits of technology

Improves measurement accuracy, repeatability, and simplifies maintenance by eliminating temperature-related errors and ensuring stable operation.

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Abstract

The invention relates to a device for braking an aircraft wheel (101), comprising at least one stack (8) of at least one rotor disc (8.1) and one stator disc (8.2), an actuator-carrying housing (2), at least one actuator (13) mounted in the actuator-carrying housing (2) in order to exert a pressing force on the stack of discs (8), the actuator-carrying housing (2) comprising a connecting portion (2.1) for connecting to the landing gear and a receiving portion (2.2) for receiving the actuator. The device comprises a braking force sensor comprising: a body (1.1) having a first end (1.1.1) mechanically attached to the connecting portion (2.1) and a second end (1.1.2) mechanically attached to the receiving portion (2.2), the body being designed to have a state representing a distance between its two ends, and a detection component close to the body (1.1) for measuring a variation in the state of the body (1.1).
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Citation Information

Patent Citations

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    CN116221303A

  • Device for detecting braking torque of drum brake

    JP1996327478A

  • Spring based brake wear sensor

    US10823244B2

  • Wear compensated torque measurement system

    US20080092641A1