Offset Bracket Assembly for Aircraft Store Decoupling
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Solution Overview
Problem
Lanyard release connectors in aircraft pylon systems experience reliability issues due to misalignment of bail bars and store axes, leading to lateral forces that can cause connector failure during store ejection.
Innovation Solution
The implementation of an offset bracket assembly that positions the lanyard-engaging member closer to the central axis of the lanyard release connector, reducing lateral forces and enhancing connector reliability without modifying the pylon system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the bail bar axis is not aligned with the store axis, then the pylon system can accommodate various store configurations, but lateral forces cause lanyard release connector failure
Solution Approach 1:
An offset bracket assembly is introduced as an intermediary component between the bail bar and the lanyard release connector. This bracket positions the lanyard engagement point offset from the bail bar axis, allowing the lanyard to pull along the store axis rather than creating lateral forces on the connector, thus resolving the misalignment issue while maintaining structural integrity
Solution Approach 2:
The solution moves the lanyard engagement point from a single-axis alignment (bail bar axis) to an offset position in a different spatial dimension. This dimensional change allows the lanyard force vector to be decoupled from the bail bar rotation axis, enabling reliable connector operation while accommodating various store configurations
2Adaptability or versatility
If the lanyard-engaging member is positioned offset from the central axis, then various store types can be accommodated, but lateral forces increase causing connector failure
Solution Approach 1:
The offset bracket assembly serves as a mediator that accepts the offset positioning requirement for store compatibility while transforming the force transmission path. The bracket structure itself absorbs and redirects the lateral forces, preventing them from being transmitted to the lanyard release connector
3Device complexity
If the pylon system uses a fixed bail bar configuration, then the structure remains simple, but it cannot accommodate stores with different axis alignments
Solution Approach 1:
The pylon system is segmented into distinct functional components: the fixed bail bar structure, the offset bracket assembly, and the lanyard release mechanism. This segmentation allows the bracket to provide adaptability for different store alignments while the main pylon structure remains simple and fixed
Solution Approach 2:
The offset bracket introduces a dimensional offset that enables accommodation of stores with different axis alignments without modifying the fundamental bail bar configuration. This dimensional adjustment provides versatility while maintaining structural simplicity
Data Source
AI summary
According to one embodiment, an aircraft pylon system comprises a pylon, a bail bar located within the pylon, an offset bracket assembly, and a lanyard release assembly. The offset bracket assembly comprises an elongated member configured to be placed around the bail bar within the pylon, a bracket coupled to the elongated member, and a lanyard-engaging member coupled to the bracket and offset from a longitudinal axis of the elongated member. The lanyard release assembly comprises a lanyard coupled to the lanyard-engaging member and a lanyard release connector coupled to the lanyard and releasably coupled to the store.