Air Vehicle Movable Wing Control Surface and Actuation
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Solution Overview
Problem
Existing air vehicles face challenges in efficiently changing flight characteristics by adjusting wing surface area during flight, while also minimizing system weight and ensuring safe operation.
Innovation Solution
The air vehicle incorporates a movable control surface on the wing that can extend or retract using a main actuator and shaft, allowing for adjustment of wing surface area, combined with an additional actuator that changes the attack angles of the wings, all while minimizing weight and ensuring safe operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a large wing area is used to increase lifting force at low speeds, then the lifting force is improved, but the drag increases at high speeds
Solution Approach 1:
The patent applies a movable control surface that can dynamically change its position relative to the wing. The control surface is connected via a shaft that allows it to extend outwardly from the wing or move toward the wing, enabling the wing's effective aerodynamic surface area to be adjusted during flight. This dynamic adjustment allows the system to optimize between lifting force at low speeds and drag at high speeds.
2Adaptability or versatility
If telescopic wings are used to adjust wing area, then the lifting force and drag are optimized, but the system weight increases
Solution Approach 1:
The patent divides the wing structure into a fixed wing section and a movable control surface that can independently adjust its position. Instead of making the entire wing telescopic, only the control surface is made movable via a shaft mechanism. This segmentation allows for area adjustment while minimizing the weight penalty compared to a fully telescopic wing system.
3Adaptability or versatility
If multiple actuators are used to control both control surfaces and wing attack angles, then the flight characteristic control is improved, but the device complexity increases
Solution Approach 1:
The patent employs a shaft mechanism that serves multiple functions: it controls the position of the control surface relative to the wing and also enables adjustment of the wing's attack angle. This multi-functional design reduces the number of separate actuators needed compared to systems that would require independent actuators for each degree of freedom.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables dynamic adjustment of wing surface area and attack angles during flight, enhancing flight characteristics, reducing system weight, and ensuring safer operation by allowing for precise control of lifting forces and drag.
Implementation Method 1
a shaft (6) enabling the control surface (4) to be moved with the triggering of the main actuator (5) and having one end connected to the control surface (4)
Implementation Method 2
a worm gear (10) extending outwardly from the shaft (6) and located around the shaft (6), a threaded channel (11) located within the control surface (4), sliding within the worm gear (10) and allowing the control surface to be moved
Implementation Method 3
at least one additional actuator (7) enabling the attack angle of the wing (3) to be changed by rotating the wing (3) on the body (2)
Data Source
AI summary
An air vehicle has a body, more than one wing located on the body creating a lifting force, at least one control surface located on the wing and movable along the direction in which the wing extends, an open position in which the control surface moves out of the wing in the direction in which the wing extends and increases the lifting force acting on the body, a closed position in which the control surface is moved from the open position and brought to the wing, a main actuator moving the control surface between the open and closed positions, at least one shaft enabling the control surface to be moved with the triggering of the main actuator and having one end connected to the control surface, and at least one additional actuator enabling the attack angle of the wings to be changed by rotating the wings on the body.