Precision Multifunction Autonomous Connections

Opterus proposes PMACs: Precision Multifunction Autonomous Connections. PMACs are a node-strut connection system designed for hybrid deployable and robotically assembled large precision optical structures. PMACs enable 10 to 30 m diameter primary mirror telescopes to be autonomously assembled on orbit. The system is multifunction and carries data, power, and fluids over the connection and is additionally high stiffness, dimensionally stable and high conductivity. A kinematically functional prototype will be manufactured in the Phase I program. The system features precision crawler assembly robot attachment points for data and power with known locations to simplify assembly positioning and metrology. The connections allow insertion of truss elements with zero axial force or distortion to maintain alignment precision. Using a grid network topology, the struts are smart with multiple sensors and networked analogue to digital converters. Embedded temperature and strain sensors are also planned for strut dimensional and health monitoring. The system is designed to be assembled, calibrated, and characterized on the ground and rapidly assemble on orbit with a minimum of robotic operations.