Aircraft Air Parameter Data Selection System
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Solution Overview
Problem
Current systems for measuring air parameters in aircraft engines are unreliable due to the complexity of redundant systems, leading to safety concerns when one system fails, as they require multiple comparisons that are difficult to manage and implement effectively.
Innovation Solution
A system that selects a reliable air parameter datum by verifying pairwise agreement among at least three data sets from engine and fuselage measurements, ensuring operational safety even if one measuring system is faulty, by using a processing unit to compare signals and determine a reference datum for engine control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If redundant measurement systems are increased to ensure operating safety, then reliability is improved, but device complexity increases significantly
Solution Approach 1:
The patent segments the measurement systems into distinct functional groups: engine zone measurements (from engines) and fuselage zone measurements (from ADIRUs). By organizing redundant measurements into segmented zones with clear selection logic, the system maintains high reliability through redundancy while managing complexity through structured segmentation of measurement sources and selection criteria.
2Measurement precision
If complex selection logic is implemented to compare multiple redundant measurements, then measurement accuracy is improved, but ease of operation deteriorates
Solution Approach 1:
The patent implements preliminary action by pre-establishing selection criteria and agreement verification rules before measurements are taken. The system pre-defines which zones are engine zones versus fuselage zones, and pre-establishes the logic for comparing measurements and determining agreement. This preliminary structuring enables accurate measurement selection while simplifying real-time operation, as the complex decision logic is already configured and ready to execute automatically.
Data Source
AI summary
A system for selecting a datum among a set of data representing an air parameter, this set comprising at least two engine data obtained by measurement respectively in the zone of two engines of an aircraft and at least two reference data obtained by measurement in the zone of the fuselage of the aircraft, the system comprising:means for verifying pairwise agreement of three data of the set of data;means for selecting a reference datum among the said three data if such agreement is verified.A process and a computer program relating thereto are also proposed.