Aircraft Lower Deck Utility Module Segmentation
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Solution Overview
Problem
Commercial aircraft with lower deck facilities occupy cargo space, leading to unused areas due to design constraints, which reduces the usability of cargo compartments for transporting passengers and cargo.
Innovation Solution
An aircraft design that optimizes the size and shape of lower deck facilities by incorporating a utility space module within the cargo compartment, allowing for additional revenue space in the passenger cabin and reducing airframe complexity by positioning the access unit independently of the utility space module, enabling full utilization of the cargo compartment for cargo containers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If lower deck facilities are installed in the cargo compartment, then additional revenue space is gained in the passenger cabin, but cargo space is occupied and becomes unusable
Solution Approach 1:
The cargo compartment is divided into two lateral halves, with the utility space module occupying only one half. This segmentation allows the other half to remain fully available for cargo, resolving the contradiction between gaining revenue space and maintaining cargo capacity.
Solution Approach 2:
The utility space module is positioned in the vertical dimension below the passenger cabin floor, utilizing the depth of the cargo compartment rather than extending laterally. This dimensional approach allows revenue space creation without compromising the lateral cargo loading area.
2Volume of moving object
If lower deck facilities are installed, then additional seating space is gained, but design constraints create unused cargo areas
Solution Approach 1:
The utility space module is designed to conform to the cross-section of only one lateral half of the cargo compartment, creating an asymmetric layout. This asymmetry allows the access unit to be positioned independently optimally, eliminating unused spaces that would result from symmetric dual-half configurations.
Solution Approach 2:
The utility space module is localized to one lateral half with a cross-section matching that half's dimensions. This local quality approach allows the access unit to be positioned independently in the optimal location without being constrained by symmetric design requirements, ensuring full utilization of the remaining cargo area.
3Ease of operation
If access units are positioned to serve utility space modules, then lower deck facilities are accessible, but airframe complexity increases
Solution Approach 1:
The access unit is extracted from the utility space module structure and positioned independently in the optimal location on the cabin floor. This separation allows the access unit to be positioned for ease of operation without being constrained by the utility space module's structural requirements, reducing airframe complexity.
Solution Approach 2:
The design allows the access unit position to be independently optimized separately from the utility space module position. This dynamic independence enables the access unit to be located where it serves operational needs best, while the utility space module can be positioned to maximize cargo space utilization, thereby reducing overall structural complexity.
Data Source
AI summary
An aircraft includes a passenger cabin having a floor, a cargo compartment below the floor, a first access unit for accessing the cargo compartment from the passenger cabin, the first access unit being located on the floor and a utility space module arranged in the cargo. At least one part of the cargo compartment includes a first lateral half and a second lateral half in relation to a longitudinal axis of the aircraft; the lateral halves form the part of the cargo compartment. The utility space module includes a utility space cross-section in a direction normal to the longitudinal axis, which is dimensioned such that it conforms to a cross-section of one of the lateral halves of the cargo compartment. Further, the utility space module is placed exclusively in the first lateral half or the second lateral half of the cargo compartment directly below the first access unit.