UAV Propeller Support Asymmetry and PCB Nesting
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Solution Overview
Problem
Small-sized unmanned aerial vehicles face challenges in compact design and thrust efficiency due to interference between propellers and the body, making it difficult to manufacture and maintain performance.
Innovation Solution
A structural design that aligns the propellers and body to minimize interference, featuring a housing with a battery and printed circuit board (PCB) configuration that allows for compact integration and efficient propulsion, with the PCB arranged perpendicular to the propeller axis and a power management circuit connected to the battery and motor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the UAV is designed in a small size, then portability and maneuverability are improved, but manufacturing difficulty increases due to minimum size constraints of components like battery and PCB
Solution Approach 1:
The patent implements nesting by placing the PCB inside the battery housing structure. The battery serves as both a power source and a structural housing that contains the PCB, eliminating the need for separate mounting spaces. This nested arrangement allows the UAV to achieve compact dimensions while accommodating all essential components, thereby improving portability without significantly increasing manufacturing complexity.
2Volume of moving object
If components are mounted in a compact arrangement, then UAV size is reduced, but thrust efficiency degrades due to interference between propellers and body
Solution Approach 1:
The patent employs asymmetric design in the propeller support structure, where supports are positioned at non-uniform distances from the body center. This asymmetric arrangement optimizes the clearance between propellers and body, preventing interference while maintaining compact overall dimensions. The asymmetric configuration allows each propeller to operate in its optimal airflow pattern, preserving thrust efficiency despite the small UAV size.
3Reliability
If basic components like battery and PCB are given minimum required size, then functional requirements are met, but UAV compactness is compromised
Solution Approach 1:
The patent merges the battery and PCB into a single integrated assembly where the PCB is housed within the battery structure. This consolidation eliminates the need for separate mounting spaces for these components, reducing the overall UAV volume while maintaining all necessary functional capabilities. The merged design achieves both compactness and functional performance by combining multiple components into one space-efficient configuration.
Data Source
AI summary
Disclosed are a body of an unmanned aerial vehicle and an unmanned aerial vehicle including the same. The body includes a housing arranged in a first direction and including at least four housing sidewalls and an opening defined by the housing sidewalls and configured to receive a battery pack, a propeller support extending a specific distance from each housing sidewall in a second direction away from the center of the housing and perpendicular to the first direction and having, on a distal end, a motor and a propeller connected to the motor, and a PCB disposed on at least one of the housing sidewalls and associated with operating the motor and the propeller.