External Power Supply Housing Layout for Cabin Space and Noise Control
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Solution Overview
Problem
The design of flying bodies with electric propulsion systems faces limitations in airframe design flexibility due to the space occupation by power supply devices like batteries, restricting cabin space and increasing noise and vibration.
Innovation Solution
A power supply device with a hollow cylindrical housing that stores a power generation unit, includes a reserving portion for fuel and an air intake portion, and is arranged outside the airframe, allowing for a longitudinal layout that reduces air drag and enhances maintenance accessibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a power supply device is disposed inside the airframe to ensure disposition space, then the power supply is protected and integrated, but the degree of freedom in designing the airframe such as cabin space is reduced
Solution Approach 1:
The power supply device is extracted from the interior space of the airframe and disposed outside the airframe. This extraction resolves the contradiction by eliminating the space occupation conflict, allowing the airframe interior to be fully utilized for cabin space while the power supply device operates independently outside, thereby maintaining both design freedom and functional integration.
2Object-affected harmful factors
If a power supply device is disposed inside the airframe, then integration is achieved, but noise and vibration are increased inside the cabin
Solution Approach 1:
The power supply device is extracted from the cabin interior and positioned outside the airframe. This extraction eliminates the source of noise and vibration from the cabin environment, directly resolving the contradiction by separating the harmful factors from the passenger space while maintaining the device's operational integration with the flying body.
3Volume of stationary object
If a power supply device is disposed outside the airframe, then cabin space is expanded, but maintenance accessibility must be improved
Solution Approach 1:
The power supply device is segmented as a separate, modular unit disposed outside the airframe rather than being integrated into the airframe structure. This segmentation enables independent maintenance and repair operations without requiring disassembly of the airframe, thereby expanding cabin space while maintaining ease of repair through modular accessibility.
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
This configuration improves airframe design freedom, expands cabin space, reduces noise and vibration, and simplifies maintenance by separating the power supply from the airframe, while maintaining efficient power generation and air intake for the flying body.
Implementation Method 1
a first portion of the storage portion surrounding the engine is covered with a heat insulating member
Implementation Method 2
a heat sink configured to dissipate heat of the power generator is arranged on the outer peripheral portion of the power generator
Data Source
AI summary
A power supply device that supplies power to a power load of a flying body, comprises: a power generation unit; a hollow housing including a reserving portion configured to reserve a fuel of the power generation unit, and a storage portion configured to store the power generation unit; and a connecting portion configured to connect the housing to an airframe of the flying body. The housing has a shape long in a front-and-rear direction of the flying body, and is arranged outside the airframe, and the reserving portion and the storage portion are arranged in a longitudinal direction of the housing.