Truss Strap Integrated Geometric Restraint for Evacuation Slide Stability
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Solution Overview
Problem
Aircraft evacuation slides are prone to movement due to wind conditions, requiring multiple restraining devices that increase part counts, costs, and weight, while traditional geometric restraints fail to maintain desired deployment sequences effectively.
Innovation Solution
A truss strap integrated geometric restraint system that includes straps coupled to the evacuation slide, a release assembly with a parachute pin, and a cover to manage deployment sequence and increase beam strength by detaching at a predetermined force, reducing the need for separate restraining devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If multiple separate restraining devices are used to limit slide movement, then the slide stability is improved, but the part count, cost, and weight increase
Solution Approach 1:
The patent combines multiple restraining functions into a single integrated geometric restraint device that includes straps, attachments, and a release mechanism. This merging of previously separate restraining devices reduces the part count while maintaining the ability to limit slide movement and control deployment sequence, directly resolving the contradiction between slide stability and device complexity.
Solution Approach 2:
The integrated geometric restraint device performs multiple functions simultaneously: it restrains slide movement, controls inflation sequence, and provides structural support. This multi-functionality allows a single device to replace multiple separate restraining devices, reducing weight and part count while maintaining slide stability during evacuation operations.
2Manufacturing precision
If multiple separate restraining devices are used to control deployment sequence, then the deployment control is improved, but the weight and cost increase
Solution Approach 1:
The patent integrates deployment sequence control functionality into the geometric restraint device itself through the release mechanism, eliminating the need for separate control devices. This merging reduces the overall weight of the restraint system while maintaining precise control over the slide inflation sequence.
3Manufacturing precision
If traditional geometric restraints are used, then the deployment sequence is controlled, but the beam strength of the slide is not sufficiently increased
Solution Approach 1:
The patent combines geometric restraint functionality with structural reinforcement elements (straps and attachments) into a single integrated device. This merging allows the system to simultaneously control deployment sequence and increase beam strength, resolving the contradiction between deployment control and structural strength enhancement.
Data Source
AI summary
The present disclosure provides a truss strap integrated geometric restraint for an evacuation slide. The truss strap integrated geometric restraint may comprise a first strap configured to be coupled to a first portion of the evacuation slide, a second strap configured to be coupled to a second portion of the evacuation slide, and a third strap detachably coupled to a third portion of the evacuation slide and configured to disengage from the portion of the slide in response to a predetermined force acting on the release mechanism, wherein the truss strap integrated geo restraint is configured to increase beam strength of the evacuation slide.