Emergency Oxygen Assemblies Separate From Aircraft Cabin PSUs

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Solution Overview

Problem

Emergency oxygen assemblies in aircraft cabins occupy space within passenger service units (PSUs), precluding other components and require adjustment during seat reconfiguration, leading to increased time and labor.

Innovation Solution

A separate emergency oxygen system is implemented, comprising oxygen assemblies uncoupled from seat pitch, retained by a rail along the cabin length, and connected to an oxygen supply, which is distinct from PSUs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If emergency oxygen assemblies are housed within PSUs, then oxygen assemblies are readily available, but space within PSUs is occupied precluding other components

Engineering Contradiction:

Improveavailability of oxygen assembliesVSAvoidspace within PSUs

Core Design Contradiction:

Ease of operationVSArea of stationary object

Solution Approach 1:

The emergency oxygen system is segmented into separate assemblies that can be independently positioned along the cabin length, rather than being integrated into fixed PSU units. This allows oxygen assemblies to be distributed at optimal locations while freeing up PSU internal space for other components.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The oxygen assemblies are extracted from the PSU housing and positioned separately along the cabin. This extraction removes the spatial conflict between oxygen assemblies and other PSU components, while maintaining accessibility through the separate positioning system.

Inventive Principle:

Principle #2Taking out (Extraction)

2Ease of manufacture

If emergency oxygen assemblies are integrated with PSUs, then installation is simplified, but adjustment during seat reconfiguration requires additional time and labor

Engineering Contradiction:

Improveinstallation simplicityVSAvoidadjustment time during reconfiguration

Core Design Contradiction:

Ease of manufactureVSLoss of time

Solution Approach 1:

The oxygen assembly positioning system is designed to be dynamic and adjustable along the cabin length, independent of seat positions. This dynamic positioning capability allows the system to adapt to different seat configurations without requiring time-consuming adjustments, while maintaining installation simplicity through a modular approach.

Inventive Principle:

Principle #15Dynamics

3Manufacturing precision

If emergency oxygen assemblies are fixed to seat pitch, then alignment with seats is ensured, but reconfiguration requires realignment of oxygen assemblies

Engineering Contradiction:

Improvealignment with seatsVSAvoidcompatibility with reconfigured seats

Core Design Contradiction:

Manufacturing precisionVSAdaptability or versatility

Solution Approach 1:

The oxygen assembly positioning is segmented from the seat pitch system, allowing independent adjustment. This segmentation enables precise alignment with current seat positions during installation while maintaining the flexibility to reposition assemblies after seat reconfiguration without compromising alignment precision.

Inventive Principle:

Principle #1Segmentation

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 design frees up space in PSUs, ensures easy access to oxygen assemblies regardless of seat configuration, reducing engineering time and labor for reconfiguration.

Implementation Method 1

the oxygen supply includes an oxygen canister fluidly coupled to the fluid conduit

Methodology Applied

Scientific EffectFluid flow through conduits:

Data Source

PatentUS20250304254A1Emergency oxygen systems for internal cabins of aircraft

Publication Date: 2025.10.02 THE BOEING CO

AI summary

A vehicle includes an internal cabin. A plurality of passenger service units (PSUs) are within the internal cabin. An emergency oxygen system is within the internal cabin. The emergency oxygen system is separate and distinct from the plurality of PSUs. A method includes providing a plurality of passenger service units (PSUs) within an internal cabin of a vehicle, and providing an emergency oxygen system within the internal cabin, wherein the emergency oxygen system is separate and distinct from the plurality of PSUs.