Offset Bed Aircraft Seat Cabin Density
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Solution Overview
Problem
Current cabin seating arrangements in business class aircraft compromise between seat density and passenger comfort, particularly in achieving horizontal bed surfaces while ensuring direct aisle access and avoiding body contact hazards.
Innovation Solution
The seating arrangement features two center columns with vertically offset bed positions and a center partition, along with window columns angled to provide direct aisle access and privacy, allowing for high-density seating with each seat having its own aisle access and minimizing body contact risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If seats are arranged in high-density configuration with longitudinal overlap, then seat density is improved, but body contact hazard increases when passengers egress from window seats
Solution Approach 1:
The cabin is divided into distinct seating zones (window seats, center seats, aisle seats) with clear spatial separation. Each seat type has defined egress paths that do not intersect with adjacent seats, segmenting the potential body contact zones while maintaining high density through vertical stacking.
Solution Approach 2:
The patent transitions from traditional 2D horizontal seat arrangement to 3D vertical arrangement with longitudinal overlap. Seats are positioned at different longitudinal positions (forward and aft) but aligned vertically, creating a stacked configuration that increases density while maintaining horizontal clearance for egress.
2Ease of operation
If foot wells are positioned in aft surfaces of forward seats to create horizontal bed surfaces, then passenger comfort is improved, but knee clearance space is reduced
Solution Approach 1:
The foot well structure is designed with asymmetric geometry where the vertical height varies along the longitudinal axis. The foot well provides maximum vertical clearance at the forward end where knee space is needed, while tapering toward the aft end where it joins the bed surface, creating an optimized asymmetric profile that balances comfort and clearance.
Solution Approach 2:
Different regions of the foot well provide different functions: the forward region provides knee clearance space, the middle region provides foot support, and the aft region joins with the bed surface. Each region is dimensioned with local quality optimized for its specific function.
3Ease of operation
If center seats are positioned with direct aisle access, then ease of egress is improved, but cabin width space is consumed
Solution Approach 1:
The center seats are designed with dynamic positioning capability, allowing them to be moved between a stowed position (retracted toward the cabin center) and an extended position (projecting toward the aisle). This dynamic adjustment enables direct aisle access when needed while minimizing space consumption when not in use.
Solution Approach 2:
The center seats are nested within the cabin structure in a retracted position, utilizing the vertical and longitudinal space efficiently. When extended, they access the aisle without requiring permanent allocation of horizontal cabin width space, effectively nesting the egress function within the existing cabin envelope.
Data Source
AI summary
Described are arrangements of seats, which include at least one column having rows of pairs of seats (12A,12B), each seat having a chair position and a bed position. A pair of foot wells (34A,34B) are positioned within an aft side of each row and configured to vertically align with the pair of seats in a next-aft row when the pair of seats are positioned in the bed position. The bed position of a first seat (12A) of the pair of seats is vertically offset from the bed position of a second seat (12B) of the pair of seats so that the first seat has a high bed position and the second seat has a low bed position.