Smart Navigation Tuning Panel for Legacy Aircraft Frequency Preload
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Solution Overview
Problem
Legacy aircraft require pilots to manually enter navigation frequencies, which is time-consuming and error-prone, and updating systems to automate this process is costly and requires retraining pilots, disrupting established operating procedures.
Innovation Solution
A line-replaceable unit (LRU) with processors that monitor communications over the aircraft data bus, extract target navigation data, and store it for automatic preloading into a standby frequency, allowing pilots to verify and switch frequencies manually, thus simplifying the tuning process without altering existing flight procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual frequency entry is used in legacy aircraft, then operating procedures are simple and well-established, but pilot workload is high and errors are frequent
Solution Approach 1:
The tuning panel acts as an intermediary device between the pilot and the navigation system. It automatically extracts frequency information from the flight management system and presents it to the pilot for verification, reducing manual entry workload while maintaining system compatibility with legacy aircraft architecture
Solution Approach 2:
The tuning panel performs self-service by automatically monitoring the data bus, extracting relevant frequency data, and pre-populating the tuning panel display without requiring pilot intervention. The system serves itself by autonomously completing the data extraction and preparation functions
2Reliability
If automated tuning system is implemented, then pilot workload is reduced and errors are minimized, but system complexity increases and requires additional hardware
Solution Approach 1:
The tuning panel performs preliminary actions by automatically extracting and pre-populating frequency data before the pilot needs to tune the navigation system. This advance preparation reduces errors by eliminating manual entry while the pilot retains verification control
Solution Approach 2:
The system implements feedback by requiring pilot verification of the automatically extracted frequency before final tuning. This feedback loop ensures data accuracy while maintaining pilot authority over the navigation system
3Productivity
If legacy aircraft systems are updated with automation, then productivity is improved, but training costs increase and pilot pool is reduced
Solution Approach 1:
The automation is applied locally at the tuning panel level rather than requiring system-wide changes. This localized approach improves tuning efficiency while preserving the overall legacy aircraft operating procedures and systems that pilots are already trained on
Solution Approach 2:
The tuning panel is designed to work universally with legacy aircraft systems by interfacing with existing data buses and navigation systems. This multi-functionality allows the same device to operate across different aircraft types without requiring pilot retraining
Data Source
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Figure 2A~2B
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AI summary
A line-replaceable unit (LRU; 102) for an aircraft includes an interface (110) configured to couple to an aircraft data bus (104). The LRU further includes one or more processors coupled to the interface. The one or more processors are configured to monitor communications over the aircraft data bus between a pilot interface (108) device and a second LRU (106). The LRU is distinct from the second LRU and is distinct from the pilot interface device. The one or more processors are further configured to, in response to detecting a particular page being transmitted over the aircraft data bus, extract target data associated with the particular page from the aircraft data bus. The one or more processors are further configured to store the target data at a memory associated with the one or more processors.