Aircraft Air Bleed Temperature Control via Segmented Monitoring
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Solution Overview
Problem
Existing aircraft air tapping systems face inaccuracies in temperature control and monitoring due to the reliance on a single temperature measurement for both functions, which can lead to safety issues when temperature thresholds are exceeded.
Innovation Solution
A system with separate modules for temperature information acquisition and processing, using distinct channels for control and monitoring, ensuring precise temperature measurements and threshold status reporting to prevent common mode errors and enhance safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single temperature measurement is used for both control and monitoring, then device complexity is reduced, but reliability deteriorates due to common mode errors
Solution Approach 1:
The patent divides the temperature measurement system into separate acquisition channels: one channel dedicated to control measurements and another channel dedicated to monitoring measurements. This segmentation ensures that a failure or error in one channel does not affect the other, eliminating common mode errors while maintaining system reliability.
2Ease of operation
If a thermostat is used to control air tapping valve opening, then temperature control is simplified, but measurement precision deteriorates due to inaccuracies introduced by the thermostat
Solution Approach 1:
The patent introduces an intermediary processing module that receives temperature measurements from the acquisition channel and processes this information before sending control signals to the air tapping valve. This intermediary layer enables precise temperature control by processing accurate measurement data without the inaccuracies introduced by direct thermostat control.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution allows for independent control and monitoring of air tapping temperatures, reducing the risk of catastrophic temperature exceedances by utilizing dual channels for temperature information, thereby improving aircraft safety and reliability.
Implementation Method 1
The precooler then allows for heat exchange between the mixed flow and the fan air flow making it possible to lower the temperature of the mixed flow at the precooler outlet
Data Source
AI summary
A system for bleeding air on an aircraft, including: at least one air bleed valve that can bleed a flow of air on the aircraft, a first temperature information module, a second temperature information module, at least one control module, and at least one data processing module coupled to the control module.