Aircraft Seating Arrangement with Nested Legwells
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Solution Overview
Problem
Existing aircraft seating arrangements face challenges in maximizing seating density while providing comfortable lie-flat seating options, often resulting in reduced privacy and increased loads during takeoff, which complicates compliance with aviation regulations.
Innovation Solution
The seating arrangement includes fore-facing, aft-facing, and center seating assemblies, with the center assembly convertible from upright to lie-flat, utilizing legwells and aprons to create a raised bed, allowing for efficient use of vertical space and maintaining passenger privacy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If lie-flat seating is provided with increased pitch distance, then passenger comfort and privacy are improved, but seating density is reduced
Solution Approach 1:
The patent transitions from traditional horizontal seat arrangement to a vertical arrangement where seats are stacked one above another. The lower seat and upper seat are positioned at different vertical levels, allowing lie-flat seating with adequate pitch distance while maintaining high seating density within the same floor space.
Solution Approach 2:
The upper seat is nested above the lower seat in a vertical configuration. The legwell of the upper seat is positioned to overlap with the upper portion of the lower seat, creating a nested arrangement that efficiently utilizes vertical space while providing adequate legroom for both seats.
2Productivity
If vertical space is exploited to increase seating density, then seating capacity is improved, but loads during takeoff are increased
Solution Approach 1:
The seating assembly is segmented into distinct lower and upper seat portions, each independently supported by the aircraft floor structure through separate legwells. This segmentation distributes the weight load to multiple structural attachment points rather than concentrating it, reducing the overall load during takeoff while maintaining vertical space utilization.
3Area of stationary object
If seats are arranged in overlapping vertical configuration, then space utilization is improved, but passenger privacy is reduced
Solution Approach 1:
The patent utilizes the vertical dimension to separate passengers into different levels. Privacy partitions are positioned between the lower and upper seats, creating visual and physical barriers that maintain passenger privacy despite the close vertical proximity and overlapping horizontal footprints of the seats.
Data Source
AI summary
Seating arrangements are provided that combine standard fore- and aft-facing lie-flat seating assemblies with a center premium lie-flat seating assembly. A center suite can include a center support shell and at least one center seat. The center support shell can provide a plurality of legwells for association with a plurality of standard seats. A center seat can be disposed between legwells in a non-overlapping manner so that legwells straddle the center seat. Surface area can be provided over the legwells to provide generous living space for a seated passenger, and to cooperate with a center seat to provide a bed for a reclined passenger. The support shell can have parallel endwalls orthogonal to parallel sidewalls to provide a center bed that is generally uniform in length and width. Legwells can be disposed in parallel and mirrored configurations.