Aircraft Maintenance Program Assignment Using Actual Utilization Data
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Solution Overview
Problem
Current aircraft maintenance programs are often labor-intensive and costly due to the need for detailed, case-by-case fatigue damage assessments, which can be unjustified by the potential cost savings, especially when considering the theoretical utilization of aircraft does not accurately reflect actual operational conditions.
Innovation Solution
An apparatus and method that utilize actual utilization data to assign predetermined structural maintenance programs based on categorized utilization criteria, eliminating the need for individual fatigue damage calculations by using an input interface, data processor, and machine-readable memory to evaluate and assign maintenance programs certified by authorities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If detailed case-by-case fatigue damage assessments are performed, then maintenance program accuracy is improved, but labor intensity and cost increase significantly
Solution Approach 1:
The patent segments the utilization assessment into predefined categories (e.g., utilization categories A, B, C) with specific criteria for flight hours, cycles, and distances. Instead of performing continuous detailed assessments, the system divides the assessment space into discrete segments that can be evaluated using simplified rules, thereby reducing labor intensity while maintaining adequate precision for maintenance decision-making.
Solution Approach 2:
The patent changes the assessment parameters from continuous detailed fatigue damage calculations to discrete utilization category assignments based on threshold criteria. By transforming the assessment from a continuous measurement problem to a categorical classification problem, the system reduces complexity while preserving the essential information needed for maintenance planning.
2Measurement precision
If detailed case-by-case fatigue damage assessments are performed, then maintenance program accuracy is improved, but cost increases significantly
Solution Approach 1:
The patent segments the utilization assessment into predefined categories (e.g., utilization categories A, B, C) with specific criteria for flight hours, cycles, and distances. Instead of performing continuous detailed assessments, the system divides the assessment space into discrete segments that can be evaluated using simplified rules, thereby reducing labor intensity while maintaining adequate precision for maintenance decision-making.
Solution Approach 2:
The patent employs inexpensive automated data processing and classification algorithms to replace expensive manual fatigue analysis. By using computationally simple threshold-based categorization instead of complex finite element analysis or detailed stress calculations, the system achieves adequate maintenance planning accuracy at a fraction of the cost, making the assessment process economically viable.
3Ease of operation
If theoretical utilization is used for all aircraft, then maintenance program simplicity is improved, but adaptability to actual operational conditions deteriorates
Solution Approach 1:
The patent introduces dynamic adaptability by allowing the utilization category assignment to be updated based on actual operational data collected from aircraft sensors and flight records. The system can transition from static theoretical utilization assumptions to dynamic real-time assessments, automatically adjusting maintenance program recommendations as aircraft actually operate under different conditions, thereby maintaining both simplicity and adaptability.
Solution Approach 2:
The patent implements feedback mechanisms where actual utilization data from aircraft operations is continuously monitored and fed back into the utilization category assignment process. This feedback loop allows the system to learn from actual operational patterns and adjust maintenance recommendations accordingly, bridging the gap between theoretical simplicity and practical adaptability by using real-world data to inform decision-making.
Data Source
AI summary
Apparatus and methods for assisting with maintenance and design of one or more structural elements of an aircraft are disclosed. One exemplary method comprises receiving actual utilization data for the aircraft and evaluating the actual utilization data with respect to at least one of a plurality of utilization criteria respectively associated with a plurality of utilization categories for the aircraft where the utilization categories are associated with respective predetermined maintenance programs for the structural element or for the aircraft as a whole. Based on the evaluation of the actual utilization data with respect to the at least one utilization criterion, one of the utilization categories is assigned to the aircraft. Based on the utilization category assigned to the aircraft, one of the predetermined maintenance programs is assigned to the structural element or to the aircraft as a whole.