Aircraft Galley Appliance Insert Interface Design
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Solution Overview
Problem
Conventional aircraft galley systems face challenges with complex and heavy electrical connection interfaces that are prone to damage and require significant space, leading to increased weight, electromagnetic interference, and complexity, as well as difficulties in installation and interchangeability of galley inserts or appliances.
Innovation Solution
A high-level electrical connection interface system that reduces internal cabling length and weight, provides electromagnetic interference protection, and allows for easy installation and interchangeability of galley inserts or appliances as line replaceable units, with a floating connection design that separates electrical and water systems and supports multiple appliance types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional electrical connection interfaces are used, then electrical power and control can be supplied to the galley insert, but the system becomes complex and heavy with long internal cabling
Solution Approach 1:
The electrical connection interface is divided into separate modular components: a connector assembly with male and female connectors, an appliance power and control unit, and a galley power and control unit. This segmentation allows each component to be independently designed, installed, and replaced, reducing overall system complexity while maintaining reliable electrical connections throughout the galley system.
Solution Approach 2:
The connector assembly is designed as a universal interface that can connect different types of galley inserts (refrigeration units, ovens, etc.) to the aircraft galley power system. The standardized male and female connectors provide multi-functional electrical and data connections, eliminating the need for complex custom wiring for each appliance type and significantly reducing internal cabling requirements.
2Reliability
If conventional electrical connection interfaces are used, then electrical power can be supplied, but the weight of the galley electrical system increases significantly
Solution Approach 1:
The heavy internal cabling and electromagnetic interference protection systems are extracted and replaced with the lightweight connector assembly. The male and female connectors provide all necessary electrical connections through a compact design, eliminating the need for long internal cables running throughout the galley insert, thereby significantly reducing the overall weight of the electrical system.
Solution Approach 2:
The connector assembly uses compact, thin-walled metal housings to protect the electrical contacts while minimizing weight. The female connector integrates multiple electrical contacts and shielding in a thin, lightweight structure that provides adequate electromagnetic interference protection without the weight penalty of conventional thick-cable assemblies.
3Ease of operation
If conventional electrical connection interfaces are used, then electrical connections can be made, but the connections are prone to damage from movement after connection
Solution Approach 1:
The connector assembly incorporates floating connection points that can move independently within their housings. The male connector can float within the female connector housing, and both can float relative to their respective mounting structures. This dynamic design absorbs movement and misalignment, preventing damage to the electrical contacts while maintaining reliable connections during installation and operation.
Solution Approach 2:
The connector housing includes built-in floating mechanisms and compliant mounting features that cushion against movement before it can damage the electrical contacts. The floating connection points are designed to accommodate thermal expansion, vibration, and installation tolerances, providing beforehand protection against connection damage without requiring complex external mounting structures.
4Adaptability or versatility
If conventional electrical connection interfaces are used, then galley inserts can be installed, but additional tools are required and interchangeability is limited
Solution Approach 1:
The male and female connectors are designed as universal interfaces that can connect different types of galley inserts (refrigeration units, ovens, heating equipment) to the aircraft galley power system. The standardized connector design allows any appliance with a male connector to be installed in any location with a female connector, enabling easy interchangeability without requiring different connection types for different appliances or locations.
Solution Approach 2:
The connector assembly is designed for tool-free installation and removal. The male connector simply plugs into the female connector housing, and the floating connection points automatically align and make contact without requiring additional tools or complex alignment procedures. This self-service design enables maintenance personnel to quickly replace galley inserts without requiring specialized tools or extensive training.
Data Source
AI summary
An electrical connection interface system for a galley insert or appliance for an aircraft galley includes a high level interface configured to be electrically connected with an appliance power and control unit or galley power and control unit. In a presently preferred aspect, the galley insert or appliance may be an oven, refrigerator or chiller.