Tim Lieuwen is a professor in the School of Aerospace Engineering at Georgia Institute of Technology. Dr Lieuwen has edited two books, written seven book chapters and more than 200 papers and holds three patents. Dr Lieuwen previously chaired the combustion and fuels committee of the International Gas Turbine Institute of the ASME. He is currently on the propellants and combustion technical committee of the American Institute of Aeronautics and Astronautics (AIAA) and previously served for five years on the AIAA air breathing propulsion technical committee. He has served on a variety of major panels and committees through the National Research Council, the Department of Energy, NASA, the General Accounting Office and the Department of Defense. Dr Lieuwen is interim editor-in-chief of the AIAA Progress in Astronautics and Aeronautics series and has served as an associate editor of the Journal of Propulsion and Power, Combustion Science and Technology and the Proceedings of the Combustion Institute. He is a Fellow of the ASME and is the recipient of numerous awards, including the AIAA Lawrence Sperry Award, the ASME Westinghouse Silver Medal, ASME best paper awards, Sigma Xi Young Faculty Award and the NSF CAREER award.

Vigor Yang is the William R. T. Oakes Professor and Chair of the School of Aerospace Engineering at the Georgia Institute of Technology. He received his PhD from the California Institute of Technology. Prior to joining the faculty at the Georgia Institute of Technology, he was the John L. and Genevieve H. McCain Chair in Engineering at the Pennsylvania State University. His research interests include combustion instabilities in propulsion systems, chemically reacting flows in air-breathing and rocket engines, combustion of energetic materials, and high-pressure thermodynamics and transport. He has supervised more than 40 PhD and 15 MS theses. He is the author or co-author of more than 300 technical papers in the areas of propulsion and combustion, and has published 10 comprehensive volumes on rocket and air-breathing propulsion. He was the recipient of the Penn State Engineering Society Premier Research Award, and several publication and technical awards from AIAA, including the Air-Breathing Propulsion Award (2005), the Pendray Aerospace Literature Award (2008) and the Propellants and Combustion Award (2009). Dr Yang was the editor-in-chief of the AIAA Journal of Propulsion and Power (2001 9) and is the editor-in-chief of the JANNAF Journal of Propulsion and Energetics (2009 ) and editor of the Cambridge Aerospace Series. He has served on the editorial advisory boards of Combustion and Flame, Progress in Energy and Combustion Science, Combustion, Explosion, and Shock Waves, Propellants, Explosives, and Pyrotechnics, The International Journal of Fluid Machinery and Systems, the Journal of Aeronautics, Astronautics, and Aviation, the Journal of the Chinese Institute of Engineers and Progress in Astronautics and Aeronautics. He has been a consultant to many US rocket and gas-turbine engine companies as well as government organizations. Dr Yang is a Fellow of the American Institute of Aeronautics and Astronautics (AIAA) and the American Society of Mechanical Engineers