4D Flight Path Replanning With Moving Occupied Space for VTOL
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Solution Overview
Problem
Existing air traffic control systems do not dynamically re-evaluate and optimize operation routes for vertical takeoff and landing aircraft in response to various phenomena occurring during operation, such as external environmental risks and obstacles, leading to potential safety and efficiency issues.
Innovation Solution
An operation management system that includes a route planning unit and an appropriable space designing unit, which plan and re-plan 4D routes for mobile objects by designing moving and fixed appropriable spaces that adjust based on the positional relation between these spaces during operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the operation management system plans the operation route based on information linked to each area at the time point of planning, then the route planning is simple and fast, but the operation route cannot be optimized in response to various phenomena occurring during operation
Solution Approach 1:
The patent implements dynamic route re-examination by continuously monitoring the mobile object's position during operation and comparing it with the pre-calculated operation route. When deviations are detected (indicating various phenomena occurring), the system dynamically recalculates and updates the route using the same grid-based algorithm, ensuring the route remains optimized for current conditions while maintaining planning efficiency.
2Productivity
If the proximity permission distance is set short to improve spatial efficiency, then more crafts can operate simultaneously, but the safety margin against external environmental risks is reduced
Solution Approach 1:
The patent applies partial action by setting the proximity permission distance to a moderate value that balances spatial efficiency and safety. Rather than using an excessively large safety margin that would reduce operation density, the system uses a calibrated distance that provides sufficient protection against typical external risks while maintaining high operational throughput. The continuous re-examination mechanism provides additional safety without requiring excessive spacing.
3Device complexity
If the operation route is re-examined only in emergency landing, then the system complexity is low, but the safety optimization during normal operation is insufficient
Solution Approach 1:
The patent implements a feedback mechanism where the system continuously monitors the mobile object's actual position during operation and compares it with the planned route. This position information feeds back to the route planning unit, which determines whether re-examination is necessary. This feedback-based approach enables continuous safety optimization without requiring complex real-time recalculations, maintaining low system complexity while significantly improving reliability.
Data Source
AI summary
An operation management system is capable of safely and space-efficiently optimizing an operation path in accordance with various events. The operation management system manages a flight of an airframe such as a vertical take-off and landing plane. The system includes a 4D path planning unit that plans a 4D path, of the airframe, represented as a series of planned passing positions and time of the airframe. The system has an occupied space design unit for designing, as occupied spaces of the airframe prohibiting entry of other airframes, a movable occupied space that includes the airframe and that moves together with a mobile body and a fixed occupied space that includes the movable occupied space and that is along the 4D path. The 4D path planning unit re-plans the 4D path on the basis of a positional relationship between the movable and fixed occupied spaces during the flight of the airframe.