3D Flight Display Guidance for Defined Path Interception
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Solution Overview
Problem
Current navigational displays in aerial vehicles use two-dimensional symbology, which do not effectively show the vehicle's relationship to a defined path, leading to reduced pilot situational awareness and increased workload.
Innovation Solution
A three-dimensional tactical navigational display system that provides a 3-D perspective projection synthetic view window, depicting the defined path and a 3-D tactical navigational symbol, which calculates and displays a preferred intercept angle to guide the vehicle back onto the desired path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If two-dimensional symbology is used for directional indicators and flight directors, then the display system remains simple and easy to operate, but the pilot's situational awareness is reduced and workload increases due to inability to show the aerial vehicle's relationship to a defined path
Solution Approach 1:
The patent transitions from two-dimensional symbology to three-dimensional graphical depictions on the primary flight display. The system renders a defined path as a three-dimensional curve in space and displays the aerial vehicle's position relative to this path in three dimensions, enabling pilots to visually perceive the vehicle's spatial relationship to the desired trajectory. This dimensional enhancement directly addresses the information loss problem by providing intuitive depth and spatial context that 2D representations cannot convey.
2Manufacturing precision
If two-dimensional directional indicators are used, then the display device remains simple, but the navigation accuracy and path interception capability are insufficient
Solution Approach 1:
The patent employs three-dimensional graphical representations to display the defined path as a spatial curve with depth perception. The system calculates and renders the aerial vehicle's position, velocity, and orientation relative to this three-dimensional path, providing precise navigation feedback. The intercept angle indicator is displayed in three dimensions to show the optimal angle for path interception, enhancing navigation accuracy beyond what two-dimensional indicators can provide.
Solution Approach 2:
The system continuously monitors the aerial vehicle's position relative to the defined path and dynamically updates the three-dimensional graphical display to reflect current spatial relationships. The intercept angle calculation provides real-time feedback on the optimal correction angle needed to return to the desired path, enabling precise path following and interception maneuvers.
Data Source
AI summary
A method of providing navigational assistance includes: obtaining position information of an aerial vehicle relative to a defined path; calculating an intercept angle for the aerial vehicle to direct the aerial vehicle to a preferred track angle; generating a 3-D perspective projection synthetic view window depicts differences in three dimensions between a point on a defined path and the aerial vehicle at a latitude, longitude, altitude, and a given viewing angle. The 3-D perspective projection synthetic view window includes: a graphical depiction of the defined path through a subsequent waypoint, and a 3-D tactical navigational symbol that includes a preferred intercept angle symbol that is positioned relative to the graphical depiction of the defined path based on the preferred track angle and the intercept angle. The method further includes displaying the 3-D perspective projection synthetic view window on a display device for use in navigating the aerial vehicle.