Aircraft Cabin Emergency Oxygen Relocation for PSU Space

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Emergency oxygen assemblies in aircraft cabins occupy space within passenger service units (PSUs), preventing other components from being housed and requiring additional time and labor for reconfiguration due to changes in seat pitch.

Innovation Solution

A separate and distinct 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 can be disposed between the cabin sidewall and PSUs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If emergency oxygen assemblies are housed within PSUs, then oxygen assemblies are readily accessible to passengers, but space within PSUs is occupied preventing other components from being housed

Engineering Contradiction:

ImproveAccessibility of oxygen assembliesVSAvoidSpace within PSUs

Core Design Contradiction:

Ease of operationVSVolume of moving object

Solution Approach 1:

The emergency oxygen assemblies are extracted from the PSUs and relocated to a separate mounting structure attached to the aircraft cabin structure. This extraction frees up space within the PSUs for other components while maintaining passenger accessibility through the separate mounting location.

Inventive Principle:

Principle #2Taking out (Extraction)

2Ease of manufacture

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

Engineering Contradiction:

ImproveInstallation simplicityVSAvoidReconfiguration time

Core Design Contradiction:

Ease of manufactureVSLoss of time

Solution Approach 1:

The system is segmented into separate functional modules: the PSUs remain independent passenger service units while the emergency oxygen assemblies are mounted separately on the cabin structure. This segmentation allows each module to be independently configured and reconfigured without affecting the other, reducing reconfiguration time when seat pitch changes.

Inventive Principle:

Principle #1Segmentation

3Stability of the object's composition

If emergency oxygen assemblies are coupled to seat pitch, then alignment with seats is maintained, but reconfiguration requires adjustment of oxygen assemblies

Engineering Contradiction:

ImproveAlignment with seatsVSAvoidAdjustment requirements

Core Design Contradiction:

Stability of the object's compositionVSEase of operation

Solution Approach 1:

The mounting structure provides localized adjustment capabilities at each oxygen assembly location rather than requiring system-wide adjustments. This allows individual oxygen assemblies to be independently positioned to maintain alignment with seats while leaving other parts of the system unchanged during reconfiguration.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS12365462B2Emergency oxygen systems for internal cabins of aircraft

Publication Date: 2025.07.22 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.