Multifunctional Self-Aligning Reversible Joint Using Space-Qualifiable Structural Fasteners

Cornerstone Research Group, Inc. (CRG) proposes to develop a multifunctional reversible attachment method to facilitate modular in-space construction. CRG will demonstrate a mechanically robust, easily reversible, self-aligning fastener system with provisions for installation of electrical power connections. The proposed approach is highly versatile and can be extended to include other types of system support connections such as data transfer, fluid flow, or thermal load transfer. This state-of-the-art fastening system leverages CRG’s space-qualifiable thermoset shape memory polymer (SMP) fasteners providing NASA with a scalable, modular joining capability that can be used with autonomous assembly systems. In Phase I representative SMP fastening devices successfully demonstrated >50 simulated use cycles including: assembly, reaction of design loads, and disassembly. Leveraging CRG’s prior development work on shape memory polymer fastener systems, the proposed R&D herein will provide NASA with a multifunctional, reversible structural attachment system with technology readiness level (TRL) of 5 at the conclusion of the Phase II effort. In follow-on development CRG’s joining technology will be integrated with automated assembly robotic systems in support of critical mission demonstrations.

Space Technology Game Changing Development Program, In-space Robotic Manufacturing and Assembly (IRMA), CIRAS, Archinaut, and Dragonfly Programs.

Industrial fasteners: Blind fasteners and removal anchors, Anti-tamper or security enclosures. Commercial spacecraft: Satellite Assembly and Solar Array Assembly. Defense aerospace: Surveillance satellites, Manned space-craft and habitat assembly, and UAV assembly and payload attachment.

This is early/mid-stage (TRL 5) — the most realistic path in is NASA SBIR/STTR, which funds small businesses and research institutions to develop technology aligned with NASA's needs (equity-free, phased funding). Check whether a current SBIR/STTR solicitation topic overlaps with this project's technology area, or contact the project directly (above) to ask.

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