Rolling Textile Protective System for Heat and Abrasion Resistance
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Solution Overview
Problem
Textile structural members are vulnerable to heat and abrasion damage in high-temperature and abrasive environments, limiting their use in applications like aircraft and spacecraft due to the weight penalty of traditional steel cables and protective devices.
Innovation Solution
A rolling textile protective system using lightweight, compressible sleeves made from heat and abrasion-resistant materials like Kevlar, Teflon, polybenzimidazole, and fiberglass, which allow for axial rolling and linear translation to prevent damage from heat and abrasion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional steel cable and heavy protective devices are used, then heat and abrasion resistance is improved, but weight increases significantly
Solution Approach 1:
The patent employs composite protective coverings made from multiple layers of different textile materials (such as aramid, polyethylene, and fiberglass) to achieve both heat and abrasion resistance. This composite approach allows the system to protect textile structural members from harmful factors while maintaining lightweight characteristics, as each material layer contributes specific protective properties without requiring heavy steel components.
Solution Approach 2:
The invention changes the material parameters from traditional steel to advanced textile materials with optimized properties. By selecting textile materials with specific tensile strength, heat resistance, and abrasion resistance characteristics, the system achieves protective performance comparable to steel while dramatically reducing weight. The protective covering parameters (thickness, layer composition, material selection) are optimized to provide adequate protection without excessive weight.
2Weight of moving object
If textile structural members are used instead of steel cable, then weight is reduced, but vulnerability to heat and abrasion damage increases
Solution Approach 1:
The patent uses composite protective coverings with multiple layers of different textile materials to enhance the reliability of lightweight textile structural members. Each material layer (such as aramid for heat resistance, polyethylene for abrasion resistance, and fiberglass for thermal stability) contributes specific protective properties, creating a synergistic system that protects the underlying textile member from heat and abrasion damage while maintaining the overall lightweight advantage.
Solution Approach 2:
The protective covering acts as a pre-applied protective barrier that cushions the textile structural member against anticipated heat and abrasion hazards. By placing the protective covering on the textile member before deployment, the system ensures that the underlying structural member is already protected when exposed to harsh environments, preventing damage before it occurs.
3Object-affected harmful factors
If steel braided sleeving is used to protect textile structural members, then heat and abrasion protection is provided, but the steel braid is cut through with little resistance during direct abrasion
Solution Approach 1:
The patent replaces steel braided sleeving with composite textile coverings made from multiple layers of high-strength textile materials. This composite structure provides both heat and abrasion protection while maintaining flexibility. The layered textile construction resists direct abrasion better than steel braid because the fibrous structure can distribute and absorb abrasive forces across multiple layers, preventing the kind of catastrophic failure that occurs when steel braid is cut through.
Solution Approach 2:
The invention uses flexible textile protective coverings that conform to the shape of the structural member. These flexible textile shells provide protection through their layered construction and material properties rather than relying on the cut resistance of metal braids. The flexible textile structure can deform and absorb impact forces, providing durable protection against direct abrasion while maintaining the lightweight and flexible characteristics needed for the application.
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 system effectively reduces weight while enhancing the reliability and safety of textile structural members by preventing damage from high forces and temperatures, such as those encountered in parachute risers, by using a combination of materials that provide both heat resistance and low friction.
Implementation Method 1
lightweight, compressible sleeves made from heat and abrasion-resistant materials like Kevlar, Teflon, polybenzimidazole, and fiberglass
Implementation Method 2
combination of materials that provide both heat resistance and low friction
Data Source
AI summary
A rolling textile protective system for textile structural members includes n number of concentric sleeves having void spaces therebetween. The n number of concentric sleeves are concentrically positioned about a common axis. N number of concentric sleeves includes an inner sleeve, a middle sleeve, and an outer sleeve. The outer sleeve is a polytetrafluoroethylene cloth layer. A first fiberglass cloth layer is adjacent to the polytetrafluoroethylene cloth layer. A polybenzimidazole cloth layer is adjacent to the fiberglass cloth layer. A para-aramid synthetic fibrous cloth layer is adjacent to the polybenzimidazole cloth layer. A second fiberglass cloth layer is adjacent to the para-aramid synthetic fibrous cloth layer. The polytetrafluoroethylene cloth layer, the first fiberglass cloth layer, the polybenzimidazole cloth layer, the para-aramid synthetic fibrous cloth layer, and the second fiberglass cloth layer are stitched together. The n number of concentric sleeves are stitched together and to a textile structural member.