Aircraft Seat Unit Structure with Monocoque Lower Shell
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Solution Overview
Problem
The existing seat unit installation methods in aircraft require reinstallation of seat components to ensure statutory aisle widths, leading to increased manufacturing time and costs due to potential installation errors and irregularities, complicating production scheduling.
Innovation Solution
A seat unit structure with a lower structure and upper shell that defines the outermost shell, fixed to the aircraft's bottom surface, ensuring predetermined dimensions and avoiding reinstallation, allowing for pre-determined aisle width verification and flexible seat arrangement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If seat components are sequentially attached to the composite structure frame in a two-step installation procedure, then the seat assembly can be completed with proper structure, but the aisle width verification requires reinstallation of components leading to increased manufacturing time and costs
Solution Approach 1:
The patent applies preliminary action by pre-assembling the complete seat unit including comfort frame assembly on the composite structure frame before installation in the aircraft. This pre-assembly ensures proper aisle width compliance is achieved during manufacturing rather than requiring verification and reinstallation after aircraft installation, thereby eliminating manufacturing delays while maintaining regulatory compliance
2Ease of manufacture
If seat components are installed in the aircraft before verification, then the installation process can proceed, but installation errors or irregularities require reinstallation leading to increased costs and scheduling difficulties
Solution Approach 1:
The patent implements preliminary action by completing the seat unit assembly including all comfort frame components before aircraft installation. This allows thorough verification of aisle width compliance and proper assembly during the manufacturing phase, eliminating the need for time-consuming reinstallation operations in the aircraft and enabling better production scheduling
Solution Approach 2:
The patent applies self-service by making the seat unit self-contained with all necessary components (composite structure frame, comfort frame assembly, seating, and safety structures) integrated into a single verifiable unit. This self-contained design allows the seat unit to be verified as complete and compliant before installation, eliminating the need for post-installation adjustments
Data Source
AI summary
An object of the present invention is to provide a seat unit structure, a seat unit, and an attachment method thereof in which component reinstallation does not arise when the seat unit is attached in an aircraft. One representative seat unit structure according to the present invention relates to a seat unit structure configured to support a seat, wherein the structure has a lower structure having a monocoque structure and defines an outermost shell in at least one direction of the seat unit. That is, the member mounted in the one direction of the seat unit can be stored inside the outermost shell of the structure. In addition, the one direction is the width direction of the airframe.