Aircraft Lavatory Layout With Over-Seat Storage and Modular Installation
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Solution Overview
Problem
Aircraft lavatories are typically small and confining due to space and size constraints, limiting passenger comfort and accessibility.
Innovation Solution
The design of a larger aircraft lavatory with an upper and lower storage compartment, wider door, and a configuration that allows for installation through existing aircraft doorways, providing increased interior space and comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the lavatory monument is designed to fit through the aircraft door, then the lavatory can be installed in existing aircraft, but the interior space is limited and confining
Solution Approach 1:
The lavatory monument is divided into multiple separable wall sections (inboard wall with door, outboard wall, forward wall, aft wall) that can be independently assembled. This segmentation allows the monument to be constructed in a modular fashion that fits through standard aircraft doors while maintaining a larger overall interior volume than traditional monolithic designs.
Solution Approach 2:
The design extends the lavatory space vertically by positioning the upper storage compartment above the seat level, utilizing the vertical dimension rather than only horizontal space. This allows increased storage capacity and interior volume without proportionally increasing the floor footprint, thereby fitting through door constraints while providing more interior space.
2Volume of moving object
If the lavatory monument is enlarged to provide more space, then passenger comfort improves, but the monument cannot fit through existing aircraft doors
Solution Approach 1:
By segmenting the lavatory into separate wall panels that can be assembled inside the aircraft, the design achieves a larger overall monument volume that would be impossible to install as a single pre-assembled unit. The modular construction allows each component to fit through standard doors while the final assembled structure provides enhanced interior space.
Solution Approach 2:
The design nests the upper storage compartment within the vertical space above the seat, effectively utilizing overlapping vertical zones. This nesting approach maximizes the use of available three-dimensional space within the envelope constrained by door dimensions, allowing larger total volume without increasing the maximum cross-sectional dimension that must pass through the door.
3Ease of operation
If the inboard wall is made wider to accommodate a wider door, then passenger access improves, but the overall lavatory width exceeds the aircraft doorway
Solution Approach 1:
The door is designed with bidirectional movement capability, able to swing both inward into the lavatory and outward into the aisle. This dynamic door operation allows the door leaf itself to provide the additional width for accessibility without requiring the stationary inboard wall structure to exceed doorway dimensions. The effective access width is enhanced by the door's operational flexibility rather than by increasing the fixed structural width.
Data Source
AI summary
An aircraft lavatory is disclosed herein. The aircraft lavatory includes an aft wall, a forward wall including an upper portion and a lower portion, the lower portion configured to be directly adjacent one or more seats, and the upper portion configured to extend away from the forward wall and over the one or more seats, an outboard wall coupled to the forward wall and the aft wall, and an inboard wall coupled to the forward wall and the aft wall, the inboard wall defining an opening to access the aircraft lavatory, wherein each of the outboard wall and the inboard wall are configured to be separated into an aft side and a forward side.