Aircraft Engine Cover Detection System Using Sensor Interaction
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Solution Overview
Problem
Aircraft engines are at risk of damage when starting due to the failure of crew members to visually confirm the removal of engine inlet covers or plugs, leading to potential intake of debris or objects, which can cause engine damage.
Innovation Solution
A cover detection system comprising sensors and a controller that interact with the engine cover to determine its installation status, preventing engine start if the cover is still in place, using RFID tags, magnetic detectors, and switch sensors to ensure safe engine operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If visual confirmation by crew members is used to verify cover removal, then the system is simple, but the reliability of detection is insufficient leading to potential engine damage
Solution Approach 1:
The patent replaces the mechanical visual confirmation method with an automated sensor-based detection system. Sensors (optical, magnetic, or capacitive) automatically detect the presence or absence of the engine cover, eliminating reliance on crew member visual inspection and providing reliable automated detection without requiring complex mechanical verification mechanisms.
Solution Approach 2:
The detection system enables self-verification of cover status through automated sensing. The system independently determines whether the cover is installed without requiring human intervention for visual confirmation, allowing the engine system to self-check its own safety status before operation.
2Reliability
If automated sensor detection is implemented, then detection reliability improves, but device complexity increases
Solution Approach 1:
The detection system is segmented into independent sensor modules that can be individually positioned and configured. Each sensor detects a specific aspect of cover presence, and the results are integrated by the control system. This segmentation allows for modular implementation, reducing overall system complexity while maintaining high detection reliability through multiple sensing points.
Solution Approach 2:
The sensor system is designed to detect cover presence through multiple sensing modalities (optical, magnetic, capacitive) that can be unified in a single detection architecture. The control system universally processes all sensor types to determine cover status, reducing complexity by using a single integrated control logic rather than separate verification systems for each sensor type.
3Productivity
If visual inspection is required, then the system remains simple, but the time for verification increases and human error occurs
Solution Approach 1:
The sensor system performs continuous or periodic detection of cover status before engine start is permitted. This preliminary automated verification eliminates the need for last-minute visual inspections by crew members, allowing the system to confirm cover removal status in advance and reducing the time required for final verification before engine operation.
Solution Approach 2:
The detection system provides real-time feedback to the control system about cover status. When the cover is properly removed, the sensors immediately signal this state, allowing the system to proceed with engine start without additional verification steps. This feedback mechanism eliminates delays associated with manual visual inspection and ensures rapid, accurate verification.
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
The system effectively reduces the risk of engine damage by ensuring the engine cover is removed before starting, providing a reliable method for crew members to confirm cover installation and preventing potential engine damage.
Implementation Method 1
using RFID tags, magnetic detectors, and switch sensors to ensure safe engine operation
Implementation Method 2
using RFID tags, magnetic detectors, and switch sensors to ensure safe engine operation
Implementation Method 3
The controller is configured to determine whether the engine cover is installed on the engine based on an interaction between the first sensor component and the second sensor component
Data Source
AI summary
The disclosed embodiments describe cover detection systems, controllers, and aircraft. The aircraft includes the controller and parts of the cover detection systems. A cover detection system includes an engine, a first sensor, an engine cover assembly, and a controller. The engine has moving parts and defines a fluid opening. The fluid opening exposes the moving parts to an ambient environment. The first sensor component is located proximate to the engine. The engine cover assembly includes an engine cover and a second sensor. The engine cover is configured to cover the fluid opening. The second sensor component is attached to the engine cover and is configured to interact with the first sensor component. The controller is configured to determine whether the engine cover is installed on the engine based on an interaction between the first sensor component and the second sensor component.