Dr. Tim Lieuwen is the interim chair of the Daniel Guggenheim School of Aerospace Engineering, Regents’ Professor, holder of the David S. Lewis, Jr. Chair, and the executive director of the Strategic Energy Institute at Georgia Tech. His interests lie in the areas of clean energy and propulsion systems, energy policy, acoustics, fluid mechanics, and combustion. He works closely with industry and government, focusing particularly on fundamental problems that arise out of the development of clean combustion systems or utilization of alternative fuels.