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The SSS-Joint is an interlocking joint system for joining structure components such as struts, flat truss frames, and volumetric truss bays together to build bigger and more complex structure systems. The SSS-Joint interface can be applied to various connection scenarios commonly found in truss structure assembly, including but not limited to strut-to-strut connections, strut-to-node connections, and half-node-to-half-node connections. By incorporating half-node joints, the number of standalone components can be reduced by over 52%, and assembly steps can be decreased by over 65% compared to traditional truss tessellations without half-nodes. In the current design, a single screwdriver can assemble all connections. The interlocking geometry of the SSS-joint features built-in guiding elements to aid the alignment process. Once in place, the screwdriver can rotate and engage with the spring-loaded captive lock-screw on the joint. The screwdriver tip does not need to be perfectly aligned, as the spring-loaded lock-screw will automatically pop into place within half a rotation after contact. This design dramatically reduces the complexity of the assembly process and eliminates the need for loose fasteners or specialized tools. The SSS-joint offers a robust, lightweight, and scalable solution for modular structural assembly in space and terrestrial applications alike. The SSS-Joint has reached Technology Readiness Level (TRL) 5 (validated in a relevant environment) and is available for patent licensing.

The Multi-Link Spherical Joint developed at NASA Johnson Space Center provides a substantial improvement over typical joints in which only two linearly actuated links move independently from one another. It was determined that the rotation point of a trussed link needed to be collocated at a shared point in space for maximum articulation. If not allowed separate rotation, the line of action through a universal joint and hinge acts effectively as another linkage. This leads to a much more complex and uncontrollable structure, especially when considering multiple dimensions. Comprising the Multi-Link Spherical Joint, a spherical shell encases the cupped ends of each six possible attachments and allows each of those attachments to be independently controlled and rotated without inhibiting the motion of the others. To do this, each link is precisely limited to 15 degrees of rotation off the link centerline, thus allowing a total of 30 degrees of rotation for each link. The shell-and-cup structure can handle the loads of linear actuators that may be used to control and vary the geometry of a truss system utilizing the new joint technology. The calculated operating load that the truss system must handle can be used to scale the size of the joint, further allowing customization of any potential truss system. Additionally, the incorporated linear actuators can be controlled and powered by wiring routed through the joint without putting undo stress on the wires during operation. Accordingly, this innovative joint technology enables more efficient deployment and precise operation of articulating structures. The Multi-Link Spherical Joint is at technology readiness level (TRL) 4 (component and/or breadboard validation in laboratory environment) and is available for patent licensing. Please note that NASA does not manufacture products itself for commercial sale.