Nested Drone Propeller Assembly for Lift Force
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Solution Overview
Problem
Existing drone propeller technologies do not adequately address the amount of lift generated by each propeller, limiting the efficiency and speed of UAV flight.
Innovation Solution
A drone propeller apparatus featuring multiple propellers rotating in opposite directions within a circular housing, driven by a motor with surrounding magnets, which amplifies lift force by directionalizing and focusing the rotation of three-bladed propellers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If multiple propellers are used to increase lift force, then the lifting capability is improved, but the device complexity increases
Solution Approach 1:
The patent combines multiple propellers (first, second, and third propellers) and their drive members into a single integrated housing structure. The motor and multiple propellers are merged into one unified assembly, allowing the system to generate increased lift force while maintaining a compact and relatively simple overall device structure. This merging approach resolves the contradiction by achieving higher lift without proportionally increasing device complexity.
Solution Approach 2:
The patent employs a nested configuration where the second propeller is positioned within the first propeller, and the third propeller is positioned within the second propeller. The drive members are also nested within each other, with the second drive member inside the first drive member cavity, and the third drive member inside the second drive member cavity. This nesting arrangement allows multiple propellers to be integrated in a compact space, increasing lift force while minimizing the increase in device complexity and overall size.
2Force
If multiple propellers rotate in opposite directions, then lift force is amplified, but the motor structure becomes more complex
Solution Approach 1:
The patent merges the motor structure with the housing, where the motor is disposed within the housing and directly connected to multiple drive members. The motor integrates the function of rotating multiple propellers in opposite directions through a unified structure, amplifying lift force while avoiding the need for separate motor assemblies for each propeller, thus controlling motor structure complexity.
Solution Approach 2:
The nested configuration of drive members allows the motor to efficiently transmit rotational force to multiple propellers. The first drive member rotates the first propeller, the second drive member (nested within the first) rotates the second propeller in the opposite direction, and the third drive member (nested within the second) rotates the third propeller. This nested arrangement enables the motor to control multiple propellers in opposite directions through a compact and integrated structure, resolving the contradiction between lift amplification and motor complexity.
3Reliability
If propellers are enclosed within a protective housing, then safety is improved, but the device complexity increases
Solution Approach 1:
The patent merges the protective housing with the motor and propeller assembly into a single integrated unit. The housing encloses the motor and multiple propellers, providing safety protection while simultaneously serving as the structural framework for mounting and supporting all components. This merging approach improves safety by enclosing moving parts, while avoiding the need for separate protective housings for each propeller, thus controlling the increase in device complexity.
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
The apparatus increases lift force, allowing drones to ascend and fly quicker than conventional systems, with adjustable pitch and potential applications in improved air circulation for ceiling fans.
Implementation Method 1
a motor coupled having a circular cavity surrounded by a plurality of magnets disposed at the opposing second side of the housing
Data Source
AI summary
A multi-propeller assembly for a drone, the multi-propeller includes a housing, a motor coupled having a circular cavity surrounded by a plurality of magnets disposed at the opposing second side of the housing, a first, second, and third three-bladed propeller having drive members rotatably coupled within the circular cavity of the motor and nested within each other, wherein the motor is configured to simultaneously rotate the first and third three-bladed propeller in a first direction and the second three-bladed propeller in an opposite second direction using the plurality of magnets.