Decoupled VTOL Hand Controls for Intuitive Transition Flight
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Solution Overview
Problem
Existing aircraft hand controls are complex and require experienced pilots to transition from vertical takeoff to forward flight, making it difficult for novice users to fly aircraft safely and intuitively, especially in new applications like personal transportation and recreational use.
Innovation Solution
Decoupled hand controls, including a single-axis thumbwheel for vertical movement and a three-axis fingertip joystick, allow independent control of orthogonal axes, with processing to set maximum velocities based on altitude and adjust pitch and yaw rates, providing intuitive control and safety features like slowed responses to hand control signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If traditional integrated hand controls are used for transition from vertical takeoff to forward flight, then the aircraft can be controlled through a single control mechanism, but the control system becomes complex and requires experienced pilots to operate safely
Solution Approach 1:
The hand control system is divided into two independent controls: a left hand control for vertical axis movement (takeoff and landing) and a right hand control for forward flight. This segmentation allows each control to be optimized for its specific function, reducing overall system complexity while improving ease of operation for novice pilots during different flight phases
2Reliability
If altitude-based velocity limits are implemented, then safety is improved by preventing excessive speed at low altitudes, but the velocity response to pilot input becomes constrained
Solution Approach 1:
The maximum velocity limit is made dynamic rather than static, adjusting automatically based on the aircraft's current altitude. At low altitudes, the system imposes stricter velocity limits to prevent accidents, while at higher altitudes, it allows greater speed. This dynamic adjustment maintains safety without unduly constraining performance when conditions permit
Solution Approach 2:
The system continuously monitors altitude and uses this feedback to adjust the maximum velocity limit in real-time. This closed-loop control ensures that velocity constraints are appropriately applied based on current flight conditions, balancing safety requirements with operational performance
3Ease of operation
If decoupled hand controls with processing are used, then intuitive control is improved for novice users, but the processing requirements and computational load increase
Solution Approach 1:
The patent replaces complex mechanical control linkages with electronic sensors and digital signal processing. Hall effect sensors detect hand control position, and a flight control computer processes these signals to generate appropriate motor commands. This substitution reduces mechanical complexity while enabling sophisticated control algorithms that improve intuitiveness for novice pilots
Data Source
AI summary
A first hand control controls an altitude of a vertical takeoff and landing (VTOL) aircraft; the movement of the VTOL aircraft within a plane defined by a roll axis and a pitch axis is independent of the first hand control. The first hand control is provided on a first hand side of a pilot's seat included in the VTOL aircraft. A second hand control controls the movement of the VTOL aircraft within the plane defined by the roll axis and the pitch axis; the altitude of the VTOL aircraft is independent of the second hand control. The second hand control is provided on a second hand side of the pilot's seat that is opposite from the first hand side.