Cargo Bay Repositionable Side Guide Rails for Variable ULD Sizes
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Solution Overview
Problem
Aircraft cargo bays are inefficient in accommodating unit load devices (ULDs) of varying sizes due to optimized configurations for specific dimensions, leading to suboptimal space utilization.
Innovation Solution
A system comprising a base and cradle with pivotable support arms and locking mechanisms that reposition rails in the cargo bay to accommodate ULDs of different dimensions, allowing flexible rail positioning and secure fastening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the cargo bay is optimized for a specific ULD dimension, then the cargo handling efficiency is improved for that specific size, but the adaptability to accommodate ULDs of varying sizes deteriorates
Solution Approach 1:
The rail system employs movable rails that can be repositioned along the cargo bay using cradles and support arms, transforming a static fixed-rail configuration into a dynamic adjustable system. This allows the cargo handling system to adapt to different ULD sizes while maintaining efficient handling capabilities for each specific configuration.
Solution Approach 2:
The rail system is designed with universal components including standardized cradles, support arms, and fastening mechanisms that can accommodate multiple ULD size variations. The same basic structure serves multiple functions by adjusting rail positions to match different cargo dimensions, eliminating the need for separate optimized configurations for each ULD size.
2Area of stationary object
If the rail position is fixed to optimize space for one ULD size, then the space utilization is improved for that configuration, but the ease of reconfiguration for different ULD sizes deteriorates
Solution Approach 1:
The rail system is divided into modular segments that can be independently adjusted. Each rail can be moved separately along the cargo bay using individual cradles and support arms, allowing flexible reconfiguration without moving the entire rail system. This segmentation enables efficient space utilization for each ULD size while simplifying the reconfiguration process.
Solution Approach 2:
Cradles and support arms serve as intermediary mechanisms between the fixed cargo bay structure and the movable rails. These intermediaries provide the mechanical means for easy rail repositioning through simple fastening and unfastening operations, making the reconfiguration process straightforward while maintaining optimal space utilization in each configured state.
3Adaptability or versatility
If multiple rail positions are provided to accommodate different ULD sizes, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
Multiple rail positioning functions are merged into a unified system using standardized cradles and support arms that work together across all rail positions. Rather than having separate mechanisms for each position, the same components serve multiple positions, reducing overall system complexity while maintaining high adaptability to different ULD sizes.
Data Source
AI summary
A system for repositioning rails in a cargo bay of an aircraft. The system includes a base configured to be coupled to a structure in the cargo bay and having a first side and a second side. The system further includes a cradle for receiving a rail for restricting movement of a unit load device (ULD) in at least one direction, the cradle configured to position the rail between a first position and a second position in which the rail is closer to the second side of the base than when the rail is in the second position.