Aircraft Trajectory Deviation Display Using Segmented Branches
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Solution Overview
Problem
Current three-dimensional synthetic vision systems in aircraft lack clear indicators for angular deviations, both lateral and vertical, between the actual aircraft position and the intended flight path, making it difficult for pilots to correct the trajectory accurately.
Innovation Solution
The method displays deviations as two straight branches on the three-dimensional representation of the flight path, with symbols providing information on lateral and vertical deviations, using a three-dimensional image computer and display system to project these branches from the aircraft's current position, incorporating symbols for slope, deviation scales, and lateral deviation indicators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a three-dimensional path representation is used to show the flight trajectory, then the visual representation of the flight path is improved, but clear indicators of angular deviations (lateral and vertical) are lost
Solution Approach 1:
The deviation indicator is segmented into two distinct straight branches: one representing lateral deviation and the other representing vertical deviation. Each branch independently displays its respective deviation type, allowing pilots to clearly distinguish between lateral and vertical positional errors without information loss in the three-dimensional path representation.
Solution Approach 2:
The deviation indicators are projected onto the three-dimensional path representation, adding angular deviation information as a dimensional overlay. The branches extend in specific directions (lateral and vertical) from the aircraft position, encoding deviation magnitude and direction in spatial orientation within the three-dimensional display space.
2Manufacturing precision
If the path width represents positioning tolerances, then the tolerance coverage is standardized, but precise angular deviation information for trajectory correction is not provided
Solution Approach 1:
The straight branches act as intermediary indicators between the aircraft position and the deviation magnitude. Rather than relying solely on path width, the branches provide a direct visual mediator that quantifies angular deviations, enabling pilots to determine precise correction angles needed to return to the intended trajectory.
3Measurement precision
If additional symbols are added to specify deviation values, then the precision of deviation information is improved, but the device complexity increases
Solution Approach 1:
Different symbolic representations are applied locally to different types of deviations: one symbol style for lateral deviation and another for vertical deviation. Each branch uses appropriate symbols positioned at its terminus to indicate the specific deviation type and magnitude, providing precise quantitative information while maintaining visual organization through localized symbol placement.
Data Source
AI summary
A method for the three-dimensional synthetic representation of the trajectory of an aircraft in flight being implemented in a flight and navigation system of an aircraft comprising a display system allowing synthetic images to be displayed, the flight plan of the aircraft comprises a predicted trajectory dependent on a non-georeferenced flight setpoint, the display of the predicted trajectory taking the form of a path represented by two limits separated by a determined width. The path comprises two branches, each branch positioned on the side of one of the two limits, each branch represented by a straight segment whose origin is a point located on the path at the current time and whose terminus is a point located at a determined distance away from the point of origin, the slope of the straight segment representative of the tangent to the predicted trajectory at the current time.