Dumitru Popescu (born: January 2, 1977) in Râmnicu Vâlcea is the president of Romanian Cosmonautics and Aeronautics Association. In 1997 he studied at the Polytechnic University of Bucharest – Aerospace Engineering. In 1998, together with a group of students, he created ARCA and soon, rockets as Demonstrator 2 and 2B were build. In 2003 ARCA joined the X Prize Competition and Dumitru represented the team to the major XPF events, such: X Prize Teams Meeting (2004), X Prize Gala (2004) and X Prize Cup (2005, 2006). In 2004 Dumitru was designer and coordinated the launch of Demonstrator 2B rocket from Cape Midia Air Force Launch Base. Demonstrator 2B was world first rocket equipped with completely reusable composite materials monopropellant rocket engine, ever to fly. Dumitru was designer for ARCA's X Prize class vehicle Stabilo and coordinated the Mission 1 and 2 flights as well as all ground tests of this vehicle. During the ARCA's Google Lunar X Prize program Dumitru will be the team leader as well as the propulsion engineer.