VTOL Landing Control Using Relative Wind Alignment on Moving Ships
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Solution Overview
Problem
Vertical takeoff/landing aircraft face restrictions during takeoff and landing on moving objects like ships due to relative wind conditions, requiring adjustments in aircraft and ship headings to stay within safe wind direction and speed ranges.
Innovation Solution
An automatic takeoff/landing system that includes a relative wind information acquisition unit to determine the direction of the relative wind and a control unit to execute takeoff/landing control, ensuring the aircraft heading aligns with the relative wind direction, thereby relaxing the takeoff/landing restrictions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the aircraft heading and ship heading are adjusted to stay within the takeoff/landing restriction range due to relative wind, then safe takeoff/landing is ensured, but the navigation of the ship is affected and the operation flexibility is reduced
Solution Approach 1:
The invention changes the reference parameter from ground wind to relative wind (wind relative to the moving ship). By using the relative wind direction and strength as the control parameter, the system determines takeoff/landing restrictions based on the ship's current motion state, thereby relaxing unnecessary restrictions and improving operational flexibility while maintaining safety
Solution Approach 2:
The invention makes the takeoff/landing restriction range dynamic by continuously updating it based on the ship's real-time heading and speed. As the ship changes course or speed, the restriction range automatically adjusts, allowing the aircraft to operate safely under varying conditions without requiring fixed, conservative restrictions that would limit navigation flexibility
2Adaptability or versatility
If the aircraft heading is changed to align with relative wind direction, then the takeoff/landing restriction is relaxed, but additional control complexity is introduced
Solution Approach 1:
The invention introduces a relative wind information acquisition unit that acts as an intermediary to measure and provide relative wind data to the control unit. This dedicated sensor system simplifies the overall control logic by providing direct relative wind measurements rather than requiring complex calculations from multiple other sensors, thereby reducing control system complexity while improving adaptability
Solution Approach 2:
The control unit continuously receives feedback from the relative wind information acquisition unit about the current relative wind conditions, and automatically adjusts the takeoff/landing restriction range accordingly. This closed-loop feedback mechanism enables the system to adapt to changing wind conditions in real-time without requiring complex manual intervention or predetermined scenarios
Data Source
AI summary
This automatic takeoff/landing system for a vertical takeoff/landing aircraft comprises: a relative wind information acquisition unit that acquires the direction of relative wind at a moving object; and a control unit that executes takeoff/landing control to cause the vertical takeoff/landing aircraft to takeoff/land at a landing target point provided on the moving object. The control unit, during takeoff/landing of the vertical takeoff/landing aircraft, executes the takeoff/landing control on the basis of the direction of the relative wind acquired by the relative wind information acquisition unit, in a state in which the aircraft heading of the vertical takeoff/landing aircraft is caused to face the direction of the relative wind.