Aircraft Door Pod Assembly Latch Mechanism
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Solution Overview
Problem
Existing emergency equipment storage and deployment systems on aircraft are prone to undesired inflation, manual operation errors, and impairment of standard aircraft components, lacking secure storage and positive deployment mechanisms.
Innovation Solution
A door pod assembly with a housing, pivotally coupled pod door, and latch mechanism that securely stores emergency equipment, including inflatable bodies, and allows for controlled deployment without impairing aircraft components, featuring pneumatically triggered latches and flexible fluid conduits for sequential release and inflation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If emergency equipment is stored in accessible compartments on aircraft, then quick deployment is enabled, but unauthorized or accidental activation may occur
Solution Approach 1:
A pod door assembly acts as an intermediary component between the aircraft door and the emergency equipment compartment. The pod door must be opened first to access the emergency equipment, providing an additional layer of control and preventing direct access to the equipment while maintaining quick deployment capability when the pod door is opened
Solution Approach 2:
The compartment system is segmented into multiple levels: the aircraft door, the pod door, and the emergency equipment compartment. This segmentation allows the equipment to be stored securely within the aircraft structure while enabling rapid access through the pod door mechanism when needed
2Device complexity
If manual operation mechanisms are used for deploying emergency equipment, then system simplicity is maintained, but human error and incomplete activation may occur
Solution Approach 1:
The pod door assembly includes self-latching mechanisms and automatic sealing features that engage when the pod door is opened. The system performs certain functions automatically, such as the pod door swinging open to expose the compartment and the automatic disengagement of retention features, reducing reliance on manual operation while maintaining system simplicity
3Ease of manufacture
If existing compartment systems are used for emergency equipment storage, then installation is straightforward, but impairment of aircraft door function and secure storage are compromised
Solution Approach 1:
The pod door assembly is nested within the aircraft door structure, with the pod door forming a recessed compartment within the larger door assembly. This nesting allows the emergency equipment storage function to be integrated into the existing aircraft door without adding external protrusions or significantly modifying the door's external dimensions
Solution Approach 2:
The pod door assembly serves multiple functions: it provides access to the emergency equipment compartment, maintains the aerodynamic profile of the aircraft door, provides structural support for the emergency equipment, and includes latching and sealing mechanisms for secure storage. This multi-functionality allows straightforward installation while maintaining both door integrity and storage security
Data Source
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AI summary
A door pod assembly includes a housing that defines a cavity for emergency equipment, a pod door, and a latch retaining the pod door in a closed position relative to the housing. The assembly is configured such that the latches, upon activation free the release door thereby exposing the emergency equipment and allowing it to be deployed. The door pod assembly may be coupled to an interior surface of a baggage compartment door and is configured so that the baggage compartment may continue to be used for its originally intended purpose.