Aircraft Flooring Architecture Sliding Layer Design

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Solution Overview

Problem

Aircraft flooring architectures face challenges in preventing deformations due to internal loads from fuselage pressurization, flight maneuvers, and temperature expansion/contraction, leading to potential structural failures and telegraphing effects.

Innovation Solution

A flooring panel configuration with a bottom layer, core ply, and upper layer, where the core ply provides stiffness and the bottom layer absorbs unevenness, combined with a floating attachment system using floor pucks and gap control media to allow displacement and prevent permanent deformation, and a sealant to prevent liquid infiltration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If the flooring panel is rigidly attached to the structural floor, then structural support is improved, but deformation and telegraphing effects occur due to fuselage pressurization and temperature changes

Engineering Contradiction:

Improvestructural supportVSAvoidflooring deformation

Core Design Contradiction:

StrengthVSStability of the object's composition

Solution Approach 1:

The flooring panel is divided into multiple layers (wear layer, core layer, balancing layer) that can independently respond to structural movements, allowing each layer to accommodate deformation differently while maintaining overall panel integrity and preventing telegraphing effects

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The core layer utilizes thermoplastic material properties that change with temperature, allowing the flooring panel to expand and contract in response to temperature variations and fuselage pressurization, thereby preventing deformation and telegraphing effects

Inventive Principle:

Principle #35Parameter changes

2Stability of the object's composition

If the flooring panel is made flexible to accommodate movement, then resistance to deformation is improved, but load-bearing capacity deteriorates

Engineering Contradiction:

Improveresistance to deformationVSAvoidload-bearing capacity

Core Design Contradiction:

Stability of the object's compositionVSStrength

Solution Approach 1:

The flooring panel combines multiple materials with different properties: a rigid wear layer for load-bearing, a flexible thermoplastic core layer for deformation accommodation, and a balancing layer for stability, creating a composite structure that simultaneously achieves load-bearing capacity and resistance to deformation

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

Different layers of the flooring panel have different material properties optimized for specific functions: the wear layer provides hardness and load-bearing capacity, while the core layer provides flexibility and deformation absorption, allowing each local region of the panel to perform its specialized function

Inventive Principle:

Principle #3Local quality

3Stability of the object's composition

If a floating attachment system is used to allow displacement, then prevention of permanent deformation is improved, but attachment reliability deteriorates

Engineering Contradiction:

Improveprevention of permanent deformationVSAvoidattachment reliability

Core Design Contradiction:

Stability of the object's compositionVSReliability

Solution Approach 1:

The floating attachment system incorporates compliance elements that anticipate and cushion against structural movements and thermal expansion, allowing the flooring panel to move with the structure rather than resist it, thereby preventing permanent deformation while maintaining attachment reliability

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

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 solution effectively prevents deformations and telegraphing effects, ensuring a stable and durable aircraft flooring system that can withstand various loads and conditions while maintaining a smooth surface.

Implementation Method 1

the core ply provides stiffness

Methodology Applied

Scientific EffectStiffness:

Implementation Method 2

the bottom layer absorbs unevenness

Methodology Applied

Scientific EffectDeformation: Deformation

Implementation Method 3

the flooring panel is capable of sliding over the structural floor

Methodology Applied

Scientific EffectFriction: Friction

Data Source

PatentUS11518492B2Aircraft flooring architecture

Publication Date: 2022.12.06 TECH COATINGS INC DBA TECH AEROSPACE

AI summary

A flooring system for enclosures or vehicles, such as an aircraft flooring architecture, includes a flooring panel with at least an upper layer, a core ply, and a bottom layer. The bottom layer of the flooring panel has a top face and a bottom face, an upper layer of the flooring panel has an upper face and a lower face, and a core ply of the flooring panel has an upper surface bonded to the lower face of the upper layer and a bottom surface bonded to the top face of the bottom layer. The bottom face of the bottom layer is located on a structural floor of an enclosure or vehicle, such as the aircraft, and the bottom layer of the flooring panel slides over the structural floor.