Aircraft Trajectory Wind Modeling With Lateral and Longitudinal Offsets
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Solution Overview
Problem
Current aircraft trajectory prediction methods require significant computational resources to accurately account for wind effects, as they involve complex trigonometric functions to calculate longitudinal and lateral forces, making real-time high-resolution trajectory modeling computationally intensive.
Innovation Solution
An avionics system that includes a processor and storage device to generate wind-independent and wind-corrected positions of an aircraft along a potential trajectory by separating wind effects into lateral and longitudinal components, allowing for efficient computation and reduction of trigonometric burdens by precalculating wind offsets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If complex trigonometric functions are used to calculate longitudinal and lateral forces from wind, then measurement precision of aircraft position is improved, but device complexity and computational burden increase
Solution Approach 1:
The patent segments the wind effect calculation into two independent components: longitudinal wind component (affecting speed) and lateral wind component (affecting position). By separating these effects, the system avoids complex trigonometric calculations while maintaining prediction accuracy. Each component is calculated independently and applied to the respective trajectory element.
Solution Approach 2:
The patent extracts the wind effect calculation from the complex trigonometric framework and isolates it into separate longitudinal and lateral component calculations. This extraction removes the computational burden of trigonometric functions while preserving the essential wind impact on trajectory prediction.
2Measurement precision
If high resolution and multiple trajectory modeling are performed, then measurement precision is improved, but productivity and real-time performance deteriorate
Solution Approach 1:
The patent divides the trajectory prediction into multiple independent trajectory elements (segments) that can be calculated separately. Each element uses simplified longitudinal and lateral wind component calculations rather than full trigonometric computations, enabling parallel processing and real-time performance while maintaining high resolution.
Solution Approach 2:
The patent pre-calculates the longitudinal and lateral wind components based on measured wind data, and then applies these pre-computed components to multiple trajectory elements. This preliminary action avoids redundant calculations for each trajectory point, significantly improving computational efficiency for high-resolution and multiple trajectory modeling.
3Measurement precision
If complex trigonometric functions are used for wind effect calculation, then measurement precision is improved, but loss of time in real-time processing increases
Solution Approach 1:
The patent extracts the time-consuming trigonometric calculations from the real-time processing loop and replaces them with simpler longitudinal and lateral wind component calculations. This extraction maintains position accuracy while dramatically reducing computation time for real-time trajectory prediction.
Solution Approach 2:
The patent changes the computational parameters from complex trigonometric functions to simplified longitudinal and lateral wind component parameters. This parameter transformation preserves the physical accuracy of wind effects while enabling real-time computation with minimal time loss.
Data Source
AI summary
Systems, aircraft, and non-transitory media are provided. An avionics system for an aircraft includes a storage device and one or more data processors. The storage device stores instructions for monitoring an actual performance of the aircraft. The one or more data processors are configured to execute the instructions to: generate a lateral component and a longitudinal component of a measured moving air mass relative to the aircraft; generate a plurality of wind independent positions of the aircraft along a potential aircraft trajectory based on a prediction model; and generate a plurality of wind corrected positions of the aircraft based on the plurality of wind independent positions, on the lateral component, and on the longitudinal component.