Multi-Channel Stirling Convertor Space Controller (MC-SCSC)

West Coast Solutions (WCS) and Sunpower, Inc. propose to build on the successful Phase I Multi-Channel Stirling Convertor Space Controller (MC-SCSC) Program and the ongoing NASA Phase II Program for a single-channel SCSC to create the next natural evolution of the technology – a high fidelity, path to flight brassboard demonstration of a MC-SCSC system. The MC-SCSC is architected to support up to eight (8) Sunpower Robust Stirling Convertors (SRSCs), thus immediately paving the way for ~480 W SRSC-based systems. Perhaps more importantly for the long term, maturation of this technology begins to prove out the methods for joining Stirling convertors of any number and any scale for future higher power systems. WCS proposes to perform a preliminary flight design to ensure a “path to flight,” and then proceed with a robust brassboard design, build, and test program. The end point of Phase II will be a TRL 5 MC-SCSC design with a low-risk path to TRL 6, and flight programs shortly thereafter. The proposed effort has been strongly informed by the topic references, related references, and consultation with Sunpower to determine a baseline architecture and preliminary requirements. The effort will be led by WCS, who is presently developing the SCSC and brings a proven track record of developing and delivering space-rated controllers for Stirling cryocoolers, as well as many other space-flight applications. WCS has again teamed with Sunpower, the industry leader in the design and build of highly efficient and reliable space-rated Stirling convertors. This well-established Team executed Phase I and is now executing the related single-channel Phase II, carrying over maximum execution efficiency to the new program.