Aircraft Power Unit Modular Assembly for Tight Installation Space

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Solution Overview

Problem

Aircraft power units are limited by installation space, particularly in vertical takeoff and landing aircraft, necessitating a highly integrated design that fits within the available space while maintaining structural integrity, and existing assembly methods are not cost-effective.

Innovation Solution

A modular power unit design comprising a motor module, ESC module, and fixing connection rods that serially connect the modules and secure the unit to the aircraft body, using threaded and bearing portions for assembly and connection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If the power unit is designed to be highly integrated to fit limited installation space, then the installation space requirement is reduced, but the manufacturing and assembly complexity increases

Engineering Contradiction:
Improveinstallation spaceVSAvoidassembly complexity
Core Design Contradiction:
Volume of moving objectVSDevice complexity

Solution Approach 1:

The power unit is divided into separate motor module and ESC module that can be manufactured independently and then assembled together using fixing connection rods, reducing overall assembly complexity while maintaining compact integration

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The fixing connection rods serve multiple functions: they connect the motor module to the ESC module, provide structural support, and enable modular assembly, thereby reducing the need for additional specialized components

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Ease of manufacture

If traditional non-modular assembly methods are used, then structural integrity is maintained, but production cost increases

Engineering Contradiction:
Improveproduction costVSAvoidstructural integrity
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The power unit is segmented into modular components (motor module, ESC module) that can be manufactured separately using standardized processes, reducing production costs while maintaining structural integrity through proper connection design

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The motor module and ESC module are pre-assembled and tested as separate units before final integration, allowing for quality control and error correction at earlier stages, thereby reducing overall production costs while ensuring structural reliability

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentEP4640561A1Aircraft and power device thereof
Publication Date: 2025.10.29 AUTOFLIGHT (KUNSHAN) CO LTD
  • EP4640561A1 patent drawingFigure 1~2
  • EP4640561A1 patent drawingFigure 3~4
  • EP4640561A1 patent drawingFigure 5

AI summary

The present invention relates to the technical field of aircraft, and discloses an aircraft and its power unit. The aircraft power unit of the present invention includes a motor module, an ESC module, and a plurality of fixing connection rods. The motor module includes a plurality of terminal posts, and the ESC module includes a plurality of ESC sockets corresponding to the terminal posts. One end of each fixing connection rod passes through the ESC module to serially connect the motor module and the ESC module, so that the terminal posts are connected to the corresponding ESC sockets, and the other end of each fixing connection rod is connected to the aircraft body. The aircraft power unit of the present invention modularizes the production and assembly of the motor and ESC, reducing costs.