Textile Door Insulation for Aircraft Cabin Thermal Sealing
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Solution Overview
Problem
Aircraft passenger doors are not well-insulated, leading to cold air leakage and discomfort for cabin crew and passengers, particularly on long flights, due to gaps between the door and the fuselage, which also disrupt the aircraft's thermal insulation.
Innovation Solution
A heat-insulating and airflow-inhibiting door insulation means made of textile material, larger than the passenger door in at least one direction, is used to cover the gaps between the door and the door frame, utilizing holding elements such as magnets or press studs for secure attachment without obstructing space, and can be easily adapted and stored.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a passenger door is equipped with standard insulation, then weight is reduced and technical devices (e.g., emergency chute) can be integrated, but thermal insulation performance deteriorates and cold air leakage occurs
Solution Approach 1:
The door insulation system is divided into two independent parts: the functional passenger door with emergency equipment and the separate textile door insulation means. This segmentation allows the door to maintain its structural and functional requirements while adding thermal insulation through the separate textile layer that can be attached when needed.
Solution Approach 2:
The textile door insulation means is designed to be dynamically attachable and detachable rather than permanently fixed. It can be attached to the door when thermal insulation is required (e.g., during passenger boarding or when the door is closed for extended periods) and removed when not needed, providing adaptive thermal protection.
2Temperature
If the door insulation means is made larger than the door opening, then thermal insulation and airflow inhibition improve, but space occupancy and device complexity increase
Solution Approach 1:
The insulation means extends beyond the door opening in at least one direction (typically vertically or laterally) to cover gaps between the door and door frame. This dimensional extension targets the specific leakage paths without requiring the insulation to occupy excessive space in all dimensions, achieving effective sealing with minimal volume.
Solution Approach 2:
The insulation means is constructed from flexible textile material that can conform to the door shape and door frame gaps. This flexible textile approach provides effective thermal insulation and airflow inhibition while maintaining a compact, space-efficient form factor that can be easily stored when not in use.
3Temperature
If textile material is used for door insulation, then thermal insulation and airflow inhibition improve, but manufacturing precision and attachment security worsen
Solution Approach 1:
The attachment system uses holding elements (such as magnets, Velcro, or snap fasteners) that change the interaction parameters between the textile insulation and the door. These holding elements provide secure attachment despite the flexibility of the textile material, ensuring the insulation remains in place during normal door operations while allowing for easy removal when needed.
4Object-generated harmful factors
If the door insulation means covers gaps around the door, then cold air flow into the cabin is reduced, but the complexity of the door system increases
Solution Approach 1:
The textile door insulation means acts as an intermediary element between the passenger door and the door frame. It fills and seals the gaps without requiring modifications to the door structure itself or the door frame, thereby reducing cold air flow while maintaining simplicity in the core door system.
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 reduces cold air flow into the aircraft cabin, maintains a warmer environment for crew and passengers, and enhances the aesthetic appeal of the passenger door while being cost-effective and space-efficient.
Implementation Method 1
a door insulation means, which bears, at least in sections, against the passenger door and is larger in at least one direction than the door opening, wherein the door insulation means is produced from a textile material which is heat-insulating and/or airflow-inhibiting
Implementation Method 2
a door insulation means, which bears, at least in sections, against the passenger door and is larger in at least one direction than the door opening, wherein the door insulation means is produced from a textile material which is heat-insulating and/or airflow-inhibiting
Data Source
AI summary
An aircraft cabin section includes a door frame, which forms a door opening, a passenger door, which is arranged on the door frame and is configured to close the door opening, and a door insulation arrangement, which is larger in at least one direction than the door opening. The door insulation arrangement is produced from a textile which is heat-insulating and/or airflow-inhibiting. Furthermore, a corresponding door insulation arrangement and an aircraft having such an aircraft cabin section or such a door insulation arrangement are disclosed.