Air Data LRU Permanent Probe Sensor Connection
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Solution Overview
Problem
Conventional air data systems face issues with pressure leaks and cumbersome maintenance due to non-permanent connections between probes or ports and pressure sensors, leading to time-consuming troubleshooting and increased downtime, while combined LRU systems require unnecessary disconnection and replacement of high and low maintenance components.
Innovation Solution
A single sub-assembly with a permanent connection between the probe or port and pressure sensor, housed within a single LRU, reduces the likelihood of leaks and allows for easy replacement, minimizing downtime and maintenance complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If non-permanent connections are used between probes/ports and pressure sensors, then ease of installation and replacement is improved, but pressure leaks and maintenance frequency increase
Solution Approach 1:
The patent combines the probe/port and pressure sensor into a single integrated LRU assembly with a permanent connection between them. This merging eliminates the interface connection that causes leaks, while the entire LRU remains replaceable as one unit, thus maintaining ease of installation while improving reliability.
2Ease of repair
If separate components are used for probes/ports and pressure sensors, then ease of replacement is improved, but connection complexity and leak risk increase
Solution Approach 1:
The probe/port and pressure sensor are merged into a single LRU with a permanent internal connection, eliminating the need for field connections and reducing device complexity at the connection interface, while maintaining ease of replacement at the LRU level.
3Device complexity
If combined LRU system is used with all components in one unit, then maintenance is simplified, but unnecessary disconnection and replacement of low-maintenance components occurs
Solution Approach 1:
The system is segmented into two parts: a permanent, integrated LRU containing the probe/port and pressure sensor combination, and a separate electronics unit. This segmentation allows the LRU to be replaced only when necessary (unlike the old combined system where everything was replaced together), reducing downtime while maintaining simplified maintenance.
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 solution significantly reduces the likelihood of pressure leaks and streamlines maintenance by allowing for scheduled replacement of high-maintenance components, thereby minimizing downtime and operational losses.
Implementation Method 1
The at least one probe or port conduits air located outside the air data sensing LRU to the at least one pressure sensor
Data Source
AI summary
Systems and methods for the co-location of high-maintenance air data system components into one LRU are disclosed. In at least one embodiment, an air data sensing line-replaceable unit (LRU) comprises at least one pressure sensor and at least one probe or port coupled to the at least one pressure sensor. The at least one probe or port conduits air located outside the air data sensing LRU to the at least one pressure sensor. Further, the at least one probe or port and the at least one pressure sensor are connected to each other by a permanent connection.