Propeller Module Positioning for Thrust Redistribution
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Solution Overview
Problem
Air mobility systems face challenges in maintaining flight stability when one propeller fails due to fixed propeller locations, which hinder efficient thrust distribution and stability.
Innovation Solution
A fail safety apparatus with rotatable and length-adjustable propeller modules, controlled by a central system to redistribute thrust and adjust propeller positions, ensuring even distribution and stability during propeller failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If propeller locations are fixed to simplify structure, then device complexity is reduced, but flight stability deteriorates when a propeller fails
Solution Approach 1:
The patent implements rotatable arms that can dynamically adjust the angular position of propeller modules around the main body, and telescopic structures that can dynamically change the radial distance of propellers from the center. This dynamic adjustability allows the system to adapt propeller locations in real-time to maintain flight stability when failures occur, resolving the contradiction between fixed simple structure and reliable stable flight.
2Power
If propeller size is increased to improve thrust generation, then power increases, but storage convenience deteriorates
Solution Approach 1:
The telescopic structure allows propeller modules to be extended to large sizes during flight to generate sufficient thrust, and retracted to compact sizes during storage and transport. This dynamic size adjustment capability enables the system to achieve both high power output during operation and convenient storage when not in use, resolving the contradiction between thrust generation and storage convenience.
3Reliability
If propeller locations are adjusted to maintain flight stability after failure, then reliability improves, but device complexity increases
Solution Approach 1:
The system employs rotatable arms with adjustable angular positions and telescopic structures with variable radial distances, enabling dynamic reconfiguration of propeller locations. This allows the air mobility device to maintain flight stability by redistributing thrust from remaining functional propellers after a failure, while the modular design keeps the complexity manageable through standardized adjustable mechanisms.
Data Source
AI summary
A fail safety apparatus of the air mobility is provided. Locations of propeller modules are adjusted by rotation parts and length adjustment units to evenly distribute thrust of the re-located propeller modules so that the attitude of the air mobility is stabilized. In particular, when one propeller module among a plurality of propeller modules fails, the attitude of the air mobility is normalized by adjusting a location of the failed propeller module and locations of remaining normal propeller modules so that flight safety of the air mobility is secured.