Deployable Lavatory Barrier for Flight Deck Access Delay
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Solution Overview
Problem
The opening of the flight deck door during flight poses a risk of unauthorized access to the flight deck, as it is difficult for cabin personnel to quickly react and secure the door against intruders.
Innovation Solution
A deployable aircraft cabin barrier formed by converting a lavatory component into a barrier configuration using a dual-purpose lavatory door or wall that engages with a second monument component to restrict access to the flight deck.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the flight deck door is opened during flight for lavatory use or food delivery, then operational convenience is improved, but security is worsened as unwanted persons can gain entry
Solution Approach 1:
The barrier is deployed in advance before the flight deck door is opened, creating a secondary defense line that slows down unwanted persons. This preliminary action ensures that even if the flight deck door is opened, the unwanted person cannot reach the flight deck quickly enough to compromise security
Solution Approach 2:
The barrier acts as an intermediary element between the cabin area and the flight deck. It is a physical structure that mediates the access control, providing an additional layer of security while allowing legitimate operations to proceed
2Reliability
If a barrier is deployed to slow down unwanted persons, then security is improved, but device complexity is worsened
Solution Approach 1:
The barrier utilizes existing aircraft structures (cabin walls, overhead bins, seat backs) that serve multiple functions. These structures are part of the normal cabin configuration but can be configured to form a barrier, eliminating the need for dedicated complex barrier hardware
Solution Approach 2:
The barrier system merges the flight deck door with existing cabin structures. By combining the door with walls, overhead bins, and seat backs, the system creates a unified barrier structure that leverages already-present components rather than adding separate complex systems
3Weight of moving object
If existing aircraft structures are used to form the barrier, then weight addition is reduced, but ease of manufacture is worsened due to structural modifications
Solution Approach 1:
Existing aircraft structures such as cabin walls, overhead bins, and seat backs are designed to serve dual purposes: their primary functions and barrier formation. This multi-functionality reduces the need for additional heavy barrier components while the modular engagement design simplifies installation
Solution Approach 2:
The barrier is designed to be dynamically configurable rather than permanently fixed. Components can be engaged and disengaged as needed, allowing the barrier to be assembled from existing structures without permanent structural modifications, thereby easing manufacture and installation
Data Source
AI summary
A dual purpose aircraft lavatory component that can be a dual purpose aircraft lavatory door that is configured to deploy in a vehicle cabin from an initial position as an aircraft lavatory monument component into a deployed position converting aircraft lavatory monument component into an aircraft cabin lockable barrier to prevent passengers from moving along an aisle in a vehicle cabin into a vehicle area forward of the lockable barrier.