Aircraft Propulsion Coupling Module for Fast Independent Maintenance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing propulsion assemblies require frequent maintenance of coupling systems, necessitating the disassembly of electric motors and transmission systems, which is time-consuming and costly, and existing offset coupling systems require modifications to the electric motor.
Innovation Solution
A propulsion assembly with a coupling module comprising coaxial, spaced apart inner and outer shafts, a freewheel, and a casing that houses these shafts and the freewheel, allowing for quick disassembly and replacement without modifying the electric motor or transmission system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the coupling system is integrated into the transmission system casing, then the coupling system is protected and structurally integrated, but maintenance requires disassembly of the transmission system and electric motors which is time-consuming and costly
Solution Approach 1:
The coupling system is segmented from the transmission system by providing it with a separate dedicated casing. This allows the coupling system to be maintained independently without disassembling the transmission system or electric motors, resolving the contradiction between structural integration and maintenance accessibility.
2Ease of operation
If the coupling system is offset from the transmission system, then maintenance accessibility is improved, but the electric motor requires modification to accommodate the offset configuration
Solution Approach 1:
A separate coupling system casing is introduced as an intermediary element between the electric motor and transmission system. This intermediary structure provides the offset configuration for maintenance accessibility without requiring modifications to the electric motor itself, resolving the contradiction between ease of operation and ease of manufacture.
3Volume of moving object
If the coupling system is positioned within the transmission system casing, then space is efficiently utilized, but the coupling system requires frequent disassembly and reassembly during maintenance
Solution Approach 1:
The coupling system is segmented with its own dedicated casing, allowing it to be positioned efficiently in space while enabling independent maintenance. This segmentation eliminates the need for frequent disassembly and reassembly of the transmission system during coupling system maintenance, resolving the contradiction between space utilization and ease of repair.
Data Source
AI summary
An aircraft comprising at least one propulsion assembly comprising: at least one electric motor, a transmission system, at least one coupling module comprising a freewheel inserted between inner and outer shafts coupled by first and second coupling mechanisms to the output and input shafts of the electric motor and of the transmission system, at least one of the first and second coupling mechanisms comprising an angle gearset, at least one hollow intermediate element in which the output shaft of the electric motor, the input shaft of the transmission system and the inner and outer tubes of the coupling module are at least partially positioned.