The Defense Advanced Research Projects Agency (DARPA) has issued an amended Request for Information (RFI) regarding the development of space-qualified nuclear thermal rocket propulsion systems, now due by January 21, 2025. This initiative seeks innovative solutions for engine design, development, and integration, particularly in conjunction with NASA's Demonstration Rocket for Agile Cislunar Operations (DRACO) program. The RFI outlines the necessity for advanced propulsion systems that can significantly enhance efficiency for both defense and space exploration missions, enabling dynamic space operations to maintain a competitive edge. Key challenges include autonomous control, safety analysis for nuclear launch authorization, and system integration with various spacecraft. Eligible participants, including universities, research centers, and private companies, are invited to submit concise white papers detailing their experiences and capabilities. The information collected may inform future programs aimed at developing versatile nuclear thermal propulsion systems vital for reducing transit times in deep space missions and facilitating military operations in increasingly complex environments. The announcement stresses that this RFI is for information purposes only and does not constitute a formal solicitation for proposals.

The Defense Advanced Research Projects Agency (DARPA) issued a Request for Information (RFI) to seek innovative solutions for space-qualified nuclear thermal rocket propulsion engine design and integration. Responses are due by January 20, 2025. This RFI is part of DARPA's partnership with NASA's DRACO program, focusing on developing a compact nuclear thermal rocket engine fueled by high-assay low-enriched uranium (HALEU). The engine is designed for maneuverable operations in space, enhancing U.S. military capabilities and supporting future human missions to Mars. DARPA emphasizes the need for submissions that demonstrate expertise in areas such as autonomous engine control, nuclear safety analysis for launch authorization, and system integration with existing spacecraft. The document outlines eligibility for responses from a diverse range of entities, including research institutions and private companies. It stipulates submission requirements and formats, and clarifies that this RFI does not constitute a formal solicitation. The overarching goal is to explore advancements in propulsion efficiency to establish a robust space logistics network and promote dynamic space operations, ultimately ensuring U.S. superiority in space capabilities.