Rear Damping Engine Attachment for Aircraft Force Transfer

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Solution Overview

Problem

Existing propulsion systems do not allow for optimal transfer of forces between the motor and the primary structure of the mast, leading to inefficiencies in force distribution.

Innovation Solution

Incorporation of a rear shock-absorbing engine mount with an elastically deformable element that forms a force path between the primary structure and the reactor core, featuring multiple attachments with anchor points in a transverse plane and elastomer rings for damping effects.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Force

If a conventional engine attachment system is used with multiple attachments connecting the primary structure and engine, then the engine can be securely mounted, but the force transfer between the motor and primary structure is not optimal

Engineering Contradiction:
Improveforce transfer efficiencyVSAvoidattachment system complexity
Core Design Contradiction:
ForceVSDevice complexity

Solution Approach 1:

The attachment system is divided into multiple independent attachments (first attachment, second attachment, third attachment) with connecting elements positioned at different locations. Each attachment handles specific force components, allowing optimal force transfer distribution while maintaining structural integrity through segmented connection points.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The connecting elements are positioned in different transverse planes (first transverse plane for first and second attachments, second transverse plane for third attachment). This spatial arrangement in multiple dimensions enables comprehensive force transfer capability, improving force distribution efficiency by utilizing three-dimensional positioning rather than single-plane attachment.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Force

If the connecting elements are positioned in different transverse planes, then force transfer is optimized, but the attachment system becomes more complex

Engineering Contradiction:
Improveforce distributionVSAvoidspatial arrangement complexity
Core Design Contradiction:
ForceVSDevice complexity

Solution Approach 1:

The attachment system uses multiple independent connecting elements positioned at different transverse planes, with each element handling specific force components. This segmentation allows optimized force distribution while maintaining manageable complexity through modular attachment design.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

Each attachment serves multiple functions: the first attachment connects the first connecting element to both the first and second transverse planes, the second attachment connects the second connecting element to the first and second transverse planes, and the third attachment connects the third connecting element to the second transverse plane. This multi-functionality optimizes force transfer across different planes while using standardized attachment components.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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

The rear shock-absorbing engine mount effectively filters and absorbs significant forces, particularly those from the reactor core's rear section, enhancing force transfer efficiency and stability.

Implementation Method 1

said rear damping engine attachment forming a force path which includes at least one elastically deformable element

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Implementation Method 2

The rear shock-absorbing engine mount filters out significant forces while also absorbing less significant forces

Methodology Applied
Scientific EffectDamping: Damping

Implementation Method 3

at least one elastomer ring interposed between the body and the connecting shaft

Methodology Applied
Scientific EffectViscoelastic deformation: Viscoelasticity

Data Source

PatentEP4707178A1Propulsion assembly comprising a shock-absorbing rear engine attachment, aircraft comprising at least one such propulsion assembly
Publication Date: 2026.03.11 AIRBUS OPERATIONS (SAS)
  • EP4707178A1 patent drawingFigure 1~2
  • EP4707178A1 patent drawingFigure 3~4
  • EP4707178A1 patent drawingFigure 5~8

AI summary

The invention relates to a propulsion assembly (30) comprising: - an engine attachment system (46), connecting a primary mast structure (42) and an engine (32), which includes several attachments (48, 50, 52), each having at least one engine mounting point (P48, P50, P52) on the engine (32), all engine mounting points (P48, P50, P52) being approximately positioned in the same transverse plane (PT), - a rear damping engine attachment (66) connecting the primary structure (42) and the rear portion (40.3) of the reactor core (40), said rear damping engine attachment (66) forming a load path that includes at least one elastically deformable element. This configuration optimizes the transfer of forces between the engine (32) and the primary structure (42).