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Benefits and Impacts Obsolescence Reduction Risk Reduction Safety Improvement Cost Reduction PowerPoint Presentation
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  1. Velcro with Electrically Active Adhesives for Orbiter EVA Area(s) of Significant Benefit Safety Performance Sustainability Operations Infrastructure • Description • Develop designs for Velcro strips and devices to be applied to the orbiter on the ground and/or on orbit that will survive ascent without damage and be stripped off without harm to the Orbiter during re-entry or by electrical separation techniques • Loops, hooks, and tether anchor devices designed to mate to the strips may be developed to use for assisting with guiding tethers and cables for EVA purposes • Epoxy based electrically disbonding adhesives for use on Earth are commercially available • Project is a high temperature version designed for use on orbit and Space Station • Technologies and Capabilities • Adhesives can have a lap shear strength of 20-50 psi and will disbond by applying 10-50 volt DC voltage and a current of • 5mA/cm2 • Velcro loop strips made of high-temperature, high-emissivity Kevlar designed to survive ascent • Matching strips configured similar to ordinary household Velcro • Ultracapacitor hand-held devices can provide power without electrical cables • Parallel development of technologies envisioned Benefits and Impacts Obsolescence Reduction Risk Reduction Safety Improvement Cost Reduction Process Improvement Other (Ultra-High Operations Improvement Reliability) Performance Enhancement • POC, Cost, Schedule and Maturity • TRL: 4 • POC: Ruth H. Pater, LaRC 757-864-4277 and • Bruce Banks, GRC 216-433-2308 • Significant improvements in safety and operations • Very effective, low cost, no moving parts, easily proven solution to the problem of making EVA safer and even possible for on-orbit Orbiter repairs • Reduction in Category1 Failure Rate of 0.5%

  2. Velcro with Electrically Active Adhesives for Orbiter EVA • Total Project Costs: $ 24M • Obsolescence & Feasibility: $ 7.0M • Formulation: $ 7.0M • Implementation: $ 10.0M (including training and outfitting Orbiters and ISS) • Project Submitted By: Ruth H. Pater, LaRC 757-864-4277 and • Bruce Banks, GRC 216-433-2308 • Note: Supplemental Information attached in MS Word document