Leon P. Gefert

Glenn Research Center, National Aeronautics and Space Administration

Papers

Total Citations

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About

Leon P. Gefert is a space propulsion and power systems researcher whose work has made meaningful contributions to NASA's long-term vision for deep space exploration. His research focuses primarily on electric propulsion technologies — both solar and nuclear — and their application to ambitious human and robotic missions throughout the solar system. Gefert's most recognized contribution is his analysis of Solar Electric Propulsion (SEP) mission architectures, explored in his 1999 and 2001 papers, which together have garnered nearly 30 citations. These works provided critical conceptual design frameworks and detailed performance analyses for SEP systems applicable to human Mars exploration and outer planet robotic missions, helping to establish the viability of solar-powered propulsion as a practical mission architecture for NASA. Equally notable is his 1994 study on Nuclear Electric Propulsion (NEP) for human Mars exploration, which contributed to NASA's preliminary assessment of "split-sprint" mission architectures — an innovative approach to reducing crew transit times and mission risk. With 11 citations, this work helped lay intellectual groundwork for ongoing discussions about nuclear propulsion as a transformative deep space transportation technology. Gefert's career reflects a sustained commitment to advancing the propulsion systems that will ultimately carry humans beyond Earth orbit.