C-Tower: A scalable, deployable/retractable, and mobile truss mast to commission relocatable 50-kW class vertical solar arrays on the lunar surface

Ceres C-Tower is a self-contained novel solution which includes a central mast deployed 23.5m high to commission gt; 60kW solar arrays near lunar poles. It is capable of multiple deployment and retraction cycles, relocation, and remote operations with a long system life of at least 10 years. It has a Specific Mass gt; 85 W/kg amp; Specific Packing Volume gt; 22 kW/m3.nbsp;C-Tower is adaptable to multiple launch vehicles, mission architectures, and landers. The mechanisms are robust under lunar dust and thermal environments. Key structural and mechanical innovations include: Central mast with innovative bearing assembly and unique internal cable-rigging to enable low-mass, high reliability multiple deployment, locking (without need of physical locks), and retraction under lunar gravity, dust, and extreme temperature environment. It is scalable to 50 m. Innovative Solar Array Deployment Arms allows for independent deployment of all solar arrays providing fault tolerance against multiple solar array deployment failures. Leg Mechanism provides stability and leveling with innovative footpad hinge design to minimizes stowed volume. Sun-Tracking Mechanism ensures optimal power generation. During Phase I, Ceres baseline technically feasible C-Tower by performing (i) multiple system amp; component level trade studies, (ii) design space analysis to determine a feasible design boundary to meet the technical goals, amp; (iii) baseline design and verification using finite element analysis of the C-Tower mechanical systems. nbsp; For Phase II, Ceres will perform detailed design, finite element analysis, and simulations for the four C-Tower mechanisms and the integrated structure which will include analysis for lunar surface thermal cycling. Ceres will perform multiple sub-scale and scale prototype tests and simulations under relevant environments, including testing of the full scale central mast prototype under lunar gravity environment (1/6 g) which will mature the structures and mechanisms to TRL 5.