Foam Aircraft Window Housing With Integrated Blind and Fastening Elements

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Solution Overview

Problem

Existing aircraft window housings are heavy, inefficient in thermal insulation and acoustic damping, and lack integrated functional components for improved functionality.

Innovation Solution

A window housing made of lightweight foam material with integrated functional components, such as fastening, retaining, and guiding elements, which are foamed into the foam structure to provide structural support and enhance acoustic and thermal insulation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Weight of moving object

If traditional materials are used for window housing, then structural strength is maintained, but weight increases and thermal insulation deteriorates

Engineering Contradiction:
Improvewindow housing weightVSAvoidstructural strength
Core Design Contradiction:
Weight of moving objectVSStrength

Solution Approach 1:

The patent applies composite materials by combining foam material with functional components (fastening elements, retaining rings, guide rails) to create a window housing that achieves both lightweight construction and sufficient structural strength. The foam provides base structure and insulation while integrated components add necessary mechanical functions without significant weight penalty.

Inventive Principle:
Principle #40Composite materials

Solution Approach 2:

The patent changes the material parameter from traditional dense materials to foam material, fundamentally altering the weight-to-strength ratio. This parameter change enables weight reduction while maintaining adequate structural integrity through optimized foam density and configuration.

Inventive Principle:
Principle #35Parameter changes

2Object-affected harmful factors

If traditional window housing designs are used, then manufacturing simplicity is maintained, but thermal insulation and acoustic damping performance deteriorate

Engineering Contradiction:
Improvethermal insulation and acoustic dampingVSAvoidhousing structure complexity
Core Design Contradiction:
Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The patent merges multiple functions into the window housing structure by integrating fastening elements, retaining rings, guide rails, and insulation layers directly into the foam housing. This consolidation achieves superior thermal and acoustic performance while managing complexity through functional integration rather than separate components.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The foam material itself provides inherent thermal insulation and acoustic damping properties, creating a composite structure where the base material contributes to environmental protection functions while integrated components provide mechanical functions.

Inventive Principle:
Principle #40Composite materials

3Adaptability or versatility

If functional components are added to improve functionality, then operational capability is enhanced, but device complexity increases

Engineering Contradiction:
Improvefunctional integration capabilityVSAvoidnumber of components
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent combines multiple functional components (fastening elements, retaining rings, guide rails for blinds, mounting structures) directly into the foam housing as integrated features. This merging approach enhances adaptability and versatility while reducing the number of separate parts and simplifying assembly procedures.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The foam housing structure is designed to perform multiple functions simultaneously - providing structural support, thermal insulation, acoustic damping, and housing for various functional components like fastening elements and guide rails, thereby achieving multi-functionality without proportionally increasing complexity.

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 foam window housing reduces weight, improves thermal insulation, enhances acoustic damping, and integrates functional components like blinds and fastening mechanisms, offering a more efficient and functional aircraft window system.

Implementation Method 1

improves thermal insulation

Methodology Applied
Scientific EffectThermal insulation: Thermal Insulation

Implementation Method 2

enhances acoustic damping

Methodology Applied
Scientific EffectAcoustic absorption: Acoustic Absorption

Data Source

PatentUS20260084800A1Foam interior window housing with integrated functional components, window module, window, aircraft having the window and method of producing the window housing
Publication Date: 2026.03.26 DIEHL AVIATION LAUPHEIM GMBH
  • US20260084800A1 patent drawing
  • US20260084800A1 patent drawing
  • US20260084800A1 patent drawing

AI summary

A window housing for a window of a passenger cabin of an aircraft having a fuselage pane and an inner pane. The window includes between the inner pane and the fuselage pane, a window funnel, which is fastened in the aircraft and is made of foam. The housing further includes a functional component fastened to the window funnel. A window module for the window includes the window housing and the inner pane. A window for the passenger cabin of the aircraft includes the fuselage pane, the inner pane and the window housing. An aircraft includes the passenger cabin with at least one of the windows in the mounted state in the aircraft.