Alternating Construct Protective Net for Projectile Deflection
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Solution Overview
Problem
Conventional protective measures for buildings and targets against propelled objects like shaped charges are expensive, cumbersome, and ineffective due to their static nature, high material requirements, and difficulty in deployment and reuse.
Innovation Solution
A net comprising cables made of two different constructs, where each cable in one direction is alternately made of a more flexible and a stronger material, creating a grid of openings with adjacent sides of varying elasticity, allowing for diversion of propelled objects by shifting their trajectory upon impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional protective nets are made of strong material to stop rockets, then protective effectiveness is improved, but weight increases and ease of deployment deteriorates
Solution Approach 1:
The net is divided into alternating cables of different materials (first construct and second construct) rather than using uniform strong material throughout. This segmentation allows the system to achieve protective effectiveness through the combined action of different material types while reducing overall weight by using lighter materials in non-critical positions.
Solution Approach 2:
Different portions of the net have different material properties - some cables are made of stronger material while others are made of lighter material. This local differentiation of material quality allows the net to provide adequate protection where needed while minimizing weight in areas where full strength is not required, thus resolving the contradiction between protective effectiveness and weight.
2Reliability
If conventional protective nets are made of strong material, then protective effectiveness is improved, but ease of manufacture and deployment deteriorates
Solution Approach 1:
The net structure is segmented into alternating cables of different material types that can be manufactured separately and then assembled. This segmentation simplifies manufacturing by allowing specialized production of different cable types and facilitates deployment by enabling modular assembly and easier handling of lighter sections.
Solution Approach 2:
By assigning different material properties to different local regions of the net (alternating cables), the design achieves protective effectiveness in critical areas while improving overall ease of manufacture and deployment through the use of lighter, more manageable materials in non-critical areas.
3Reliability
If conventional protective nets use uniform strong material, then protective effectiveness is improved, but cost increases
Solution Approach 1:
The net is segmented into alternating cables of different material types rather than using uniform strong material throughout. This segmentation reduces the total quantity of expensive strong material required while maintaining protective effectiveness through the combined action of different material types in different positions.
Solution Approach 2:
Different material properties are assigned to different local regions of the net, allowing the use of stronger (and more expensive) materials only where absolutely necessary for protection, while using lighter, less expensive materials in other areas. This local differentiation of material quality reduces overall material quantity and cost while preserving protective effectiveness.
4Stability of the object's composition
If conventional protective nets are static and rigid, then structural stability is improved, but adaptability to different attack angles deteriorates
Solution Approach 1:
The net is divided into alternating cables of different material types with different flexibility characteristics. This segmentation creates a structure that can respond differently to forces from different directions, improving adaptability to various attack angles while maintaining overall structural stability through the combined action of rigid and flexible sections.
Solution Approach 2:
Different portions of the net have different material properties (rigid vs. flexible cables) that allow the structure to adapt locally to forces applied from different directions. This local quality differentiation enables the net to maintain structural stability overall while being adaptable to various attack angles, as the flexible portions can deform to accommodate oblique impacts while rigid portions maintain structural integrity.
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 net effectively diverts or disrupts the trajectory of propelled objects, potentially causing them to explode or lose momentum, thereby protecting the target area with a lighter, easier-to-deploy, and cost-effective solution.
Implementation Method 1
the first construct optionally comprises elastic fibers therein
Implementation Method 2
the second construct optionally comprises rigid fibers therein. Within the net, the second construct optionally comprises metal fibers therein
Data Source
AI summary
A net and method for creating the same, the net comprising: cables in two or more directions, wherein the cables in each of the directions are made of at least a first construct or a second construct, wherein each cable of a first construct in the first direction has neighboring cables in the first direction made of the second construct, and each cable of the first construct in the second direction has neighboring cables in the second direction made of the second construct.