Rudder Twist Lock Mechanism for UAV Mode Transition
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Solution Overview
Problem
Existing aircraft designs, such as UAVs, face challenges in efficiently and easily attaching and detaching rudder surfaces without disassembling the fuselage, which complicates mode transitions between airplane and helicopter operations.
Innovation Solution
A twist lock mechanism utilizing a cylindrical base, an elastic member, and a tang that biases into a channel to securely attach and detach rudder surfaces, allowing for removability without fuselage disassembly, comprising a cylindrical shaft with a channel and a tang extending from the base, biased by the elastic member into a locked position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If existing aircraft designs are used to attach and detach rudder surfaces, then the fuselage must be disassembled, but this complicates mode transitions between airplane and helicopter operations
Solution Approach 1:
The rudder assembly is divided into separable components (rudder surface and fuselage mounting interface) that can be independently attached and detached. The mounting interface includes separate elements such as mounting brackets or flanges that can be connected to the fuselage without disassembling the fuselage structure itself, enabling easy rudder removal while maintaining fuselage integrity.
Solution Approach 2:
The rudder mounting system is extracted as a separate, removable interface between the rudder and fuselage. This includes removable mounting brackets, quick-release mechanisms, or detachable flanges that allow the rudder to be taken out from the fuselage without disassembling the fuselage structure, thereby simplifying mode transitions.
2Adaptability or versatility
If a removable rudder system is implemented, then mode transitions become easier, but the attachment mechanism becomes more complex
Solution Approach 1:
Multiple functions are merged into a single integrated mounting interface structure. The mounting bracket or flange combines attachment, alignment, and locking functions in one component that interfaces between the rudder and fuselage. This integration reduces the number of separate parts and simplifies the overall attachment mechanism while maintaining adaptability for mode transitions.
Solution Approach 2:
The mounting interface is designed as a universal connection system that can accommodate different rudder configurations and mounting orientations. The same basic mounting structure can be used for both airplane and helicopter mode configurations, providing multi-functionality and adaptability without requiring complex mode-specific attachment mechanisms.
3Productivity
If quick-release mechanisms are used for rudder attachment, then operational convenience is enhanced, but the reliability of the connection may be compromised
Solution Approach 1:
The mounting interface is pre-configured with alignment features, pre-positioned fasteners, or pre-loaded spring mechanisms that automatically engage when the rudder is attached. This preliminary preparation ensures that the quick-release mechanism achieves reliable locking without requiring complex manual adjustment or multiple steps, thereby maintaining both speed and reliability.
Solution Approach 2:
The attachment mechanism incorporates self-locking features such as spring-loaded tangs, cam-locked fasteners, or automatically engaging detents that secure the rudder in place without requiring additional fastening actions. The system self-secures upon attachment, providing reliable connection while maintaining quick attachment and detachment capability.
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
Enables secure and efficient attachment and detachment of rudder surfaces, facilitating seamless transitions between airplane and helicopter modes of operation, enhancing operational flexibility and convenience.
Implementation Method 1
a tang extending from one of the base and the hollow shaft into a channel formed in the other of base and the hollow shaft, and biasing the tang with an elastic member into a locked position in the channel thereby securing the hollow shaft and the base together
Data Source
AI summary
An example of an aerial vehicle includes a rudder removably connected to the aerial vehicle by a twist lock mechanism. The twist lock mechanism is biased in a locked position by an elastic member.