Aircraft Monument Mounting With Adjustable Multi-Point Attachment

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Solution Overview

Problem

Existing aircraft monument attachment apparatuses suffer from slippage and bolt failure due to high stress levels, leading to high replacement and repair costs and increased aircraft weight.

Innovation Solution

An aircraft monument attachment apparatus comprising an attachment structure, a bridge fitting, and a position adjustment part with adjustable coupling interfaces and multiple fastening points, allowing for selective positioning in three axes and reduced stress on individual fixings.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional single-point attachment is used, then installation is simple, but bolt failure and slippage occur due to high stress

Engineering Contradiction:

Improveattachment reliabilityVSAvoidattachment structure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The attachment structure is divided into multiple separate fixings (at least two fixings distributed across different locations) rather than using a single centralized attachment point. This segmentation distributes the mechanical stress across multiple fastening points, preventing bolt failure and slippage while maintaining structural integrity of the monument attachment system.

Inventive Principle:

Principle #1Segmentation

2Manufacturing precision

If high-precision machined aluminium and stainless steel are used, then manufacturing precision is high, but manufacturing cost is high

Engineering Contradiction:

Improvemonument positioning precisionVSAvoidmanufacturing cost

Core Design Contradiction:

Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The attachment system is segmented into modular components (attachment structure, bridge fitting, position adjustment part) that can be manufactured separately using standard precision machining processes. This modularity allows each component to be optimized for its specific function while using cost-effective materials and manufacturing methods, reducing overall manufacturing cost while maintaining positioning precision.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The position adjustment part enables dynamic positioning of the bridge fitting relative to the attachment structure along the Z-axis through adjustable coupling mechanisms. This dynamic adjustment capability allows for precise positioning during installation without requiring the entire structure to be manufactured with ultra-high precision, thereby reducing manufacturing costs while maintaining positioning accuracy.

Inventive Principle:

Principle #15Dynamics

3Reliability

If replacement is necessary after bolt failure, then reliability is restored, but replacement cost is high

Engineering Contradiction:

Improveattachment reliabilityVSAvoidreplacement cost

Core Design Contradiction:

ReliabilityVSEase of repair

Solution Approach 1:

The segmented design with multiple independent fixings means that if one bolt fails, the other fixings remain functional and can continue to support the monument attachment. This eliminates the need for complete replacement of the attachment system, significantly reducing repair costs and downtime while maintaining overall reliability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The distributed multi-point attachment system provides built-in redundancy that cushions against the impact of individual bolt failure. The stress distribution across multiple fixings prevents single-point failures from compromising the entire attachment system, effectively preparing the system in advance to withstand localized failures without requiring expensive replacements.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

4Weight of moving object

If weight is reduced, then fuel consumption decreases, but structural strength may be compromised

Engineering Contradiction:

Improveattachment apparatus weightVSAvoidattachment strength

Core Design Contradiction:

Weight of moving objectVSStrength

Solution Approach 1:

The attachment structure is segmented into multiple lightweight fixings distributed across different locations rather than using a single heavy attachment point. This segmentation allows for optimized material usage in each component, reducing overall weight while maintaining sufficient strength through the distributed load-bearing capability of multiple fixings.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentEP4527737B1Aircraft monument attachment apparatus

Publication Date: 2026.05.20 BE AEROSPACE (UK) LTD

Figure 1A~1B
Figure 1C~1D
Figure 2

AI summary

An aircraft monument attachment apparatus (100) comprising an attachment structure (101) for attaching the monument attachment apparatus (100) to an aircraft cabin surface, a bridge fitting (103), and a position adjustment part (105) connectable between the attachment structure (101) and the bridge fitting (103). The bridge fitting (103) comprises a first set of fastening apertures (117a, 117b) for providing connection to a second set of fastening apertures (133a, 133b) of the position adjustment part (105). The attachment structure (101) comprises a first interface (123), and the position adjustment part (105) comprises a second interface (129) arranged to adjustably couple to the first interface (123) such that that the position adjustment part (105) can be selectively positioned relative to the attachment structure (101). In use, the first set of fastening apertures (117a, 117b) of the bridge fitting (103) at least partially overlaps with the second set of fastening apertures (133a, 133b) of the position adjustment part (105) and the first interface (123) and the second interface (129) are coupled with the position adjustment part (105) selectively positioned relative to the attachment structure (101).