This Amended Determination addresses the small-scale research and development activities of an optically powered ultra-high-speed (OPUS) wound-field synchronous generator (WFSG) for use in uncrewed aircraft.
Office of NEPA Policy and Compliance
June 9, 2026
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This Amended Determination follows the approval of additional funding, extended period of performance, and new project milestones to support the project team's small-scale research and development activities of an optically powered ultra-high-speed (OPUS) wound-field synchronous generator (WFSG) for use in uncrewed aircraft, which uses a high efficiency solar cell not reliant on rare-earth materials. Specifically, the project team will (1) fabricate, test, and validate a low-power OPUS WFSG and integrated optical power transfer; (2) fabricate, test, and validate a high-power OPUS WFSG to meet predetermined performance standards; and (3) analyze system for future use in high-torque performance systems. If successful, this project would enable sustainable power generation from renewable sources, ultimately reducing dependence on foreign energy and mineral sources, thereby increasing U.S. energy security.