SVS Mode Switching Between Taxi and Takeoff Runway Views
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Solution Overview
Problem
Traditional synthetic vision systems (SVS) provide a narrow field of view suitable for take-off, flight, and landing operations but are inadequate for taxiing to a takeoff point on a runway, lacking the necessary wide field of view and clarity during taxi operations.
Innovation Solution
A system and method that switches between an SVS taxi mode exocentric view and flight mode egocentric view based on predefined exclusion zones, using aircraft and runway dimensions to determine transitions, ensuring optimal visibility during taxiing and take-off.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If traditional SVS provides a narrow field of view, then it is sufficient for take-off, flight, and landing operations, but it is not ideal for taxiing to a takeoff point on a runway
Solution Approach 1:
The patent applies dynamics by making the SVS view mode changeable based on aircraft operational state. The system transitions between a first view mode (narrow field of view) for flight operations and a second view mode (wide field of view) for taxiing operations, allowing the display to adapt its characteristics dynamically to match the current operational requirements of the aircraft.
Solution Approach 2:
The patent changes the parameter of field of view width by switching between different view modes. The system modifies the display parameter (field of view) from narrow to wide based on whether the aircraft is in flight mode or taxiing mode, thereby optimizing the visual information presentation for each specific operational context.
2Measurement precision
If SVS uses a narrow field of view for flight operations, then it provides sufficient detail for take-off and landing, but it reduces visibility during taxiing operations
Solution Approach 1:
The system dynamically adjusts the field of view width based on the aircraft's operational state. During flight operations, it maintains a narrow field of view to provide sufficient visual detail for take-off and landing, while switching to a wide field of view during taxiing operations to improve visibility of the surrounding environment and runway surroundings.
Solution Approach 2:
The patent implements parameter changes by switching between different field of view widths corresponding to different operational modes. The display system changes the field of view parameter from narrow (for flight) to wide (for taxiing), optimizing the balance between visual detail and overall situational awareness based on operational requirements.
3Adaptability or versatility
If the system switches between SVS modes frequently, then it adapts to different operational states, but it creates nuisance transitions that disrupt the display
Solution Approach 1:
The system performs preliminary action by proactively switching to the appropriate view mode before the aircraft actually enters the corresponding operational state. The controller predicts when mode switching should occur based on aircraft position and operational parameters, preparing the display in advance to avoid sudden or disruptive transitions during critical operational moments.
Data Source
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AI summary
A system may include a display (902) and a processor (904). The processor may: output a synthetic vision system (SVS) taxi mode exocentric view (102) of an aircraft while the aircraft is performing taxi operations and when the aircraft is not in a predetermined exclusion zone, the predetermined exclusion zone including portions of a runway where the aircraft is able to begin taking off, wherein a width of the predetermined exclusion zone is based at least in part on at least one of a width of the runway or a classification of the runway; and output an SVS flight mode egocentric view from the aircraft when the aircraft is in the predetermined exclusion zone. The display may display the SVS taxi mode exocentric view until the aircraft is in the predetermined exclusion zone and display the SVS flight mode egocentric view when the aircraft is in the predetermined exclusion zone.