Contoured Class Divider for Aircraft Cabin Space Optimization
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Solution Overview
Problem
Commercial aircraft cabin design faces challenges in efficiently separating cabin classes while ensuring passenger safety and maximizing usable space, particularly in meeting Head Injury Criteria (HIC) and load sharing requirements during emergency landings.
Innovation Solution
A contoured class divider is designed to nest into the space behind the seatback, featuring a curved panel that matches the seatback contour, allowing for increased seat pitch and legroom, and includes a locking mechanism and energy-absorbing zones to enhance safety during deceleration events, while also allowing for closer placement to seating systems to optimize space utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hard divider is placed between seat rows to separate cabin classes, then class separation is achieved, but the spacing between bulkheads and seating systems must be at least one inch to meet load sharing requirements, reducing usable space
Solution Approach 1:
The divider is segmented into multiple portions: a first portion attached to the overhead storage bin assembly and a second portion attached to the seat tracks. This segmentation allows each portion to independently handle loads, enabling the divider to meet load sharing requirements while reducing the spacing to less than one inch between the divider and seating systems, thereby increasing usable space.
Solution Approach 2:
The divider features a contoured shape with a forwardly extending portion that locally matches the contour of the aft seatback. This local quality optimization allows the divider to nest into the volume behind the seat body, maximizing space utilization in critical areas while maintaining overall structural integrity for load sharing.
2Volume of moving object
If the divider is placed closer to the seating system to maximize space, then usable space increases, but passenger safety in head impact zones during emergency deceleration may be compromised
Solution Approach 1:
The divider incorporates an upwardly extending portion that rises above the seatback contour. This vertical dimension addition creates a buffer zone that protects passengers' heads from impacting the divider during emergency deceleration, while the forwardly extending portion simultaneously maximizes horizontal space utilization by nesting into the volume behind the seat body.
Solution Approach 2:
The divider is designed with pre-positioned contours and extensions that proactively establish safe clearance zones before emergency events occur. The upwardly extending portion is permanently positioned to prevent head contact, eliminating the need for reactive safety measures during emergencies.
3Volume of moving object
If the divider contoured to nest into the volume behind the seatback to maximize space, then seat pitch and legroom increase, but the divider may interfere with seatback recline movement
Solution Approach 1:
The divider is divided into a stationary contoured portion that nests into the volume behind the seatback and a movable portion attached to the overhead storage bin assembly. This segmentation allows the contoured portion to maximize space while the movable portion can accommodate seatback recline movement without interference.
Solution Approach 2:
The divider incorporates dynamic characteristics through its attachment system to the overhead storage bin assembly, allowing the upper portion to move with the bin assembly during seatback recline. This dynamic design enables the contoured lower portion to nest into the volume behind the seatback while maintaining clearance during recline operations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The contoured class divider increases passenger safety by providing additional clearance and energy absorption during emergencies, while enabling closer spacing to seating systems to enhance space efficiency and potentially add additional rows of seats.
Implementation Method 1
a contoured class divider according to this application includes at least one energy absorbing zone to absorb the energy of a head impact in the event of an emergency situation
Implementation Method 2
The locking mechanism, in one example, may include a shear pin which remains in its locked position until it is subjected to longitudinal acceleration associated with an emergency landing. Under those conditions the deceleration force experienced by the divider is sufficient to overcome the pin static shear force
Data Source
AI summary
A contoured class divider for dividing an aircraft cabin includes a panel positioned between an aft seat and a forward seat, the panel having a convex contour closely matching an aft-facing contour of a seatback of the forward seat and configured to enhance space utilization. The contoured class divider may include multiple panel portions that are coupled together and articulate relative to one another. The contoured class divider may include an articulation system to articulate the panel portions with respect to one another from a first position (normal operation) to a second position (emergency landing). The contoured class divider may provide up to an additional 12 inches of space which can be used to reduce seat pitch (and thereby enhance passenger comfort) or increase the number of rows of seats on a given aircraft.