Aircraft Cargo Bay Ceiling Panel Guard

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Solution Overview

Problem

Ceiling pressure relief panels in cargo bays of jet aircraft are prone to damage or dislodgement due to contact with cargo, particularly luggage and bags, which often exceed the recommended two-inch gap and are affected by turbulence during flight.

Innovation Solution

A pressure relief panel guard with a rectangular configuration and downwardly projecting side members, including a net and quick release clips, is designed to deflect and fend off cargo, preventing contact with the ceiling panel while allowing for easy removal and maintenance of the panel.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If cargo is stacked high or positioned close to the cargo bay ceiling, then cargo loading efficiency is improved, but the ceiling panel is at risk of contact and damage

Engineering Contradiction:
Improvecargo loading efficiencyVSAvoidcargo contact damage to ceiling panel
Core Design Contradiction:
ProductivityVSObject-affected harmful factors

Solution Approach 1:

The panel guard acts as an intermediary protective structure positioned between the cargo and the ceiling panel. It extends below the ceiling panel to intercept cargo before it can contact the panel, while not interfering with normal cargo loading operations. The guard absorbs the harmful contact forces, protecting the ceiling panel from damage.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If the ceiling panel is protected from cargo contact, then panel reliability is improved, but cargo loading flexibility is reduced

Engineering Contradiction:
Improveceiling panel reliabilityVSAvoidcargo loading flexibility
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The panel guard provides localized protection only in the critical area where cargo contact with the ceiling panel is most likely to occur. The guard extends downward from the ceiling panel edges, creating a protective zone around the panel while leaving the rest of the cargo bay open for flexible cargo loading. This localized approach maintains cargo loading flexibility while ensuring panel reliability.

Inventive Principle:
Principle #3Local quality

3Object-affected harmful factors

If a protective structure is installed around the ceiling panel, then panel protection is improved, but device complexity is increased

Engineering Contradiction:
Improveprotection from cargo contactVSAvoidprotective structure complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The panel guard is segmented into multiple sections, with each side member protecting a specific edge of the ceiling panel. This segmentation allows the protective structure to be constructed from simpler, modular components rather than a single complex structure. The segmented design also facilitates easier installation and maintenance while providing comprehensive protection around the panel.

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS9611028B2Pressure relief panel guard
Publication Date: 2017.04.04 BOYER WILLIAM J
  • US9611028B2 patent drawing
  • US9611028B2 patent drawing
  • US9611028B2 patent drawing

AI summary

A pressure relief panel guard for use with a pressure relief ceiling panel having a perimeter and positioned in an aircraft cargo bay ceiling. The panel guard including a mounting structure attachable to the cargo bay ceiling, and having a mounting portion and a guard support portion, and a guard structure releasably supported by the guard support portion of the mounting structure. The guard structure having a perimeter wall and a central opening between the perimeter wall sized such that when supported by the guard support portion of the mounting structure at the pressure relief ceiling panel the pressure relief ceiling panel is vertically aligned with the central opening with the perimeter wall extending about the perimeter of the pressure relief ceiling panel and the perimeter wall does not overlap the pressure relief ceiling panel or otherwise restrict operational access to the pressure relief ceiling panel from below.