Aircraft Seat Webbing Restraint for Quick Passenger Release
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Solution Overview
Problem
There is no temporary restraint system specifically designed for deployment on an aircraft during flight to safely restrain a disruptive or combative passenger, and existing systems lack the ability to be partially or fully removed in emergency situations.
Innovation Solution
A temporary restraint system comprising a webbing system with multiple straps and connector assemblies, allowing for quick and secure restraint of a passenger, while also enabling partial or complete removal in emergencies, utilizing standard seat belt buckle assemblies and receivers for familiarity and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a temporary restraint system is deployed to restrain a disruptive passenger, then the safety and control of the passenger is improved, but the complexity of the device and time required for deployment increases
Solution Approach 1:
The restraint system is divided into multiple independent straps (first strap overlying first shoulder, second strap overlying second shoulder, third strap engaging seat back, fourth strap encircling waist and seat, fifth strap extending between legs) that can be individually positioned and secured. This segmentation allows the system to be applied in a systematic manner while maintaining overall simplicity through modular construction.
Solution Approach 2:
The restraint system uses standard seat belt buckle assemblies and receivers that are familiar to aircraft passengers and crew, allowing the same components to serve both as restraint elements and as familiar interface points for quick deployment. The webbing system can function as both structural restraint and quick-release mechanism.
2Loss of time
If a restraint system is designed for quick deployment, then the response time to secure a disruptive passenger is reduced, but the ease of operation may be compromised
Solution Approach 1:
The restraint system is pre-configured with straps of appropriate lengths and connector assemblies already attached, allowing flight crew to simply position and secure the straps rather than assembling components during deployment. The webbing system is designed to be pre-measured and pre-assembled for immediate use.
Solution Approach 2:
The system uses self-buckling connector assemblies where the buckle automatically engages with the latch plate when brought together, eliminating the need for complex manual fastening procedures. The receiver on the fifth strap automatically secures the fourth strap when positioned correctly, providing self-securing functionality.
3Reliability
If the restraint system is designed to be completely removable in emergencies, then the safety during evacuation is improved, but the reliability of restraint may be reduced
Solution Approach 1:
The restraint system transitions from a static restrained state to a dynamic quick-release state through the fifth strap mechanism. The fifth strap can be rapidly released from the receiver to partially remove the restraint system, or all straps can be released to completely remove it, allowing dynamic adaptation to emergency conditions while maintaining restraint reliability during normal operation.
Solution Approach 2:
The system is segmented into multiple straps with independent connector assemblies, allowing selective removal of portions of the restraint system. The fifth strap can be released to partially remove the restraint while leaving other straps in place, or all straps can be released for complete removal, providing graduated levels of restraint removal based on emergency requirements.
Data Source
AI summary
A temporary restraining system, used in a method of restraining an individual, includes a webbing system having (a) a first strap, adapted to overlie a first shoulder of the individual, (b) a second strap, adapted to overlie a second shoulder of the individual, (c) a third strap, adapted to engage a back of the seat, (d) a fourth strap, adapted to encircle the individual and the back of the seat, and (e) an opening, adapted to receive a head of the individual and outlined by the first strap, the second strap, a portion of the third strap and a portion of the fourth strap.