Motorless Expandable Solar Array (MESA)

Dynovasrsquo; Motorless Expandable Solar Array (MESA) system provides a novel solution that specifically addresses NASArsquo;s call for technologies enabling structural and mechanical innovations for a 50-kW-class solar array that can be relocated and deployed at least 5 times.nbsp; The system is designed for an efficiency of gt; 75 W/kg and a volume efficiency gt;22 kW/m3.nbsp; This solution was developed based on previous technologies that have proven track record such as inflatables and bistable composites and new technologies for deployment and packaging that specifically address the unique mission requirements for large deployable solar arrays.nbsp; The MESA system will be demonstrated at TRL 6 in Phase II via sub/full scale operation of key elements of the system, including array deployment, tower erection and retraction, and solar tracking.nbsp; All systems are designed for the lunar environment (-80 deg;C to + 130 deg;C, under vacuum), including lunar dust.nbsp; The Phase I successfully fabricated a scale model of the MESA system, with demonstrations of several key technologies, such as, bistable booms, inflatables, tensioned guy wires and a collapsible tower.In Phase II, Dynovas will demonstrate the prototype MESA major sub-systems at TRL 6. The Phase II technical objectives will bridge the gap between the proven concept and readiness for flight testing opportunities. The Phase II objectives include:Full scale demonstrations of key subsystems, including: tower mechanism, self-tensioning guy wires, deployable solar arrays, and solar tracking.Structure and system packaging conceptual design packageEmpirical testing of the proof-of-concept to validate the technologies potentialProgress reportingFinal report detailing Phase I success, Phase II objectives, and path to commercializationnbsp;The TRL 6 MESA System, delivered at the completion of Phase II, provides NASA and others a complete power generation system for use from 50 kW-300kW power stations.