Aircraft Brake Temperature Monitoring for Asymmetry Detection
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Solution Overview
Problem
Existing methods for monitoring the temperature of aircraft landing gear brakes struggle to accurately identify which brake or equipment is causing temperature asymmetry, making it difficult to determine the need for maintenance actions.
Innovation Solution
A method using a prediction model to estimate the maximum temperature of each brake during landing, comparing it with measured temperatures, and generating a warning message when errors exceed predefined thresholds, allowing for accurate identification of maintenance needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If temperature sensors and monitoring units are used to measure and monitor brake temperatures, then brake temperature can be detected and warnings can be issued, but it becomes difficult to accurately identify which specific brake or equipment is causing temperature asymmetry
Solution Approach 1:
The patent divides the monitoring system into four independent monitoring units, each dedicated to a specific brake (left main, right main, left nose, right nose). Each monitoring unit independently tracks its assigned brake's temperature measurements and comparisons, enabling precise identification of which specific brake exhibits abnormal behavior while maintaining comprehensive monitoring coverage across all brakes.
2Reliability
If the monitoring system compares maximum temperatures of multiple brakes to detect asymmetry, then abnormal braking conditions can be detected, but the system cannot determine which specific brake requires maintenance
Solution Approach 1:
The monitoring system continuously compares the maximum temperature of each brake against a reference temperature (either from another brake or a predefined threshold) and provides feedback when the difference exceeds a threshold. This feedback mechanism, combined with independent tracking per brake, enables the system to not only detect that an abnormality exists but also to identify which specific brake is problematic, as each monitoring unit reports on its dedicated brake independently.
3Productivity
If a single monitoring system tracks all brake temperatures collectively, then overall brake health can be monitored, but individual brake performance and maintenance needs cannot be accurately assessed
Solution Approach 1:
The monitoring system is segmented into four independent monitoring units, each responsible for tracking the temperature of a specific brake. This segmentation allows the system to maintain efficient overall monitoring while simultaneously providing precise individual brake assessment, as each unit independently records, compares, and evaluates its assigned brake's temperature data without interference from other brakes.
Data Source
AI summary
A device for monitoring a maximum temperature reached during landing by a brake of landing gear of an aircraft. The monitoring device uses a prediction model to estimate a maximum temperature reached by the brake during landing. An error between the estimated maximum temperature and the measured maximum temperature is determined, and if the error is greater than a first predefined threshold, when the measured maximum temperature is greater than the estimated maximum temperature, or a second predefined threshold, when the measured maximum temperature is less than the estimated maximum temperature, and if a total number of errors is greater than a third predefined threshold, then a warning message is generated for attention of the flight crew and/or ground crew. It is thus possible to anticipate maintenance actions on landing-gear components.