Aircraft Passenger Service Unit Connectors for Daisy-Chain OHSC Wiring
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Solution Overview
Problem
Current aircraft interior wiring systems for overhead stowage compartments face challenges such as labor-intensive installation, lack of standardization, increased complexity, and high costs due to individual component connections and non-universal wiring solutions, which hinder scalability and adaptability.
Innovation Solution
A modular passenger service unit with dual connectors (stationary and flexible) and a daisy chain integration method, allowing for adaptable and efficient wiring of aircraft systems, including a metallic rail for signal integrity and oxygen distribution, with click-and-snap mechanisms for secure connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If individual connections between PSC components and aircraft interfaces are used, then each component can be connected securely, but the installation process becomes labor-intensive and time-consuming
Solution Approach 1:
The wiring system is segmented into modular units with standardized connectors. Each PSC component has its own integrated connector assembly, allowing independent installation and connection. This segmentation enables parallel installation processes and reduces the complexity of individual wiring tasks while maintaining secure connections.
Solution Approach 2:
Multiple wiring functions are merged into integrated connector assemblies that combine electrical connections, mechanical mounting, and alignment features. The connector integrates the PSC component interface with the aircraft structure interface, eliminating the need for separate wiring steps and reducing installation labor.
2Adaptability or versatility
If customized wiring solutions are created for each aircraft type, then specific aircraft requirements are met, but standardization is compromised and complexity increases
Solution Approach 1:
The connector assembly is designed as a universal interface that can adapt to different aircraft types through configuration options rather than fundamental design changes. The same basic connector structure serves multiple aircraft models, maintaining standardization while providing the necessary adaptability through modular variations.
Solution Approach 2:
The wiring system accommodates different aircraft types by changing parameters such as connector orientation, cable length, and mounting positions rather than redesigning the entire system. These parameter adjustments allow the same standardized connector design to work across multiple aircraft configurations.
3Reliability
If extensive wiring of each PSC component is performed, then proper electrical connections are established, but the lead time for aircraft manufacturing increases
Solution Approach 1:
Wiring connections are pre-assembled and tested in the connector assemblies during component manufacturing, before installation in the aircraft. This preliminary wiring action ensures connection reliability is established beforehand, eliminating time-consuming on-site wiring tasks and reducing manufacturing lead time.
Solution Approach 2:
The connector assembly is designed to self-align and self-secure during installation, with built-in alignment features and snap-fit mechanisms that automatically establish proper electrical connections without requiring meticulous manual wiring. The system serves itself during installation, reducing labor time while maintaining connection reliability.
Data Source
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AI summary
A modular passenger service unit (10) for an aircraft (100) is provided, comprising: a unit stationary connector (12); and a unit flexible connector (14), comprising a flexible length for adaptable installation of the modular passenger service unit (10), wherein the unit stationary connector (12) and the unit flexible connector (14) are configured to be connectable to an associated passenger supply channel portion (16) of a lining module (18), preferably an overhead stowage compartment (OHSC), via an associated lining stationary connector (20) and a lining flexible connector (22) comprising a flexible length, wherein the modular passenger service unit (12) is configured to facilitate a daisy chain integration in a wiring scheme of the aircraft in which multiple modular passenger service units (10) are wired together in sequence.