- Dr. Arnas, David, Scholar, Mathematics, Universidad de Zaragoza. Visiting scholar, from March 3 to June 29, 2016.
- Dr. Wu, Kevin Yunhe (Kevin), Scholar, Beijing Institute of Tracking and Telecommunication Technology, Beijing University of Aeronautics and Astronautics, Beijing (People’s Republic of China), Visiting scholar, from 06/01/2013 to 05/31/2014.
- Dr. Casanova, Daniel Ortega, Scholar, Department of Applied Mathematics, University of Zaragoza (Spain), Visiting scholar, from 08/20/2010 to 11/20/2010. Now Assistant Professor, Centro Universitario de la Defensa, Zaragoza (Spain).
- Dr. Zhang, Gang, Scholar, School of Astronautics, Harbin Polytechnical University, Harbin, (P.R. China), Visiting scholar, 12/09-12/10. Now Associate Professor, Harbin Polytechnical University, Harbin, (P.R. China).
- Dr. Ning, Yu, Scholar, School of Astronautics, Northwestern Polytechnical University, Shaanxi (P.R. China), Visiting scholar, 01/09-12/10.
- Dr. Avendano, Martin Eugenio, Visiting Assistant Professor, Mathematics, Texas A&M University, Post-doc, 09/01/08-08/31/09. Now Associate Professor, Centro Universitario de la Defensa, Zaragoza (Spain).
- Prof. Rugescu, Radu, Scholar, Chair of Aerospace Sciences “Elie Carafoli,” University Politehnica of Bucharest (Romania), Fulbright Senior Scholar Award, visiting scholar. Several terms during years 2007-2009.
- Dott. Tonetti, Stefania, Aerospace Engineering, Polytechnic of Milan (Italy), Visiting scholar, 09/01/06-04/30/07.
- Dott. Clocchiatti, Alberto, Scholar, Aerospace Engineering, Polytechnic of Milan (Italy), Visiting scholar, 10/01/05-03/30/06.
- Dr. Abdelkhalik, Ossama Mohamed Omar, Post-doc, Aerospace Engineering, Texas A&M University, 12/18/05-08/28/06. Now Associate Professor, Michigan Tech., Mechanical Engineering, Houghton, MI.
- Dr. Kardec de Almeida Junior, Allan, Post-doc, Brazilian FAPESP Fellowship. National Institute for Space Research, Sao Jose’ dos Campos, SP – Brasil. From 1/1/2020 to 12/31/2020.