Dr. Ahmed F. El-Sayed is a Professor of Aerospace and Mechanical Power Engineering at Zagazig University, Egypt, since 1983. He was a Senior Engineer with the Egyptian Airline EGYPTAIR for ten years, working in maintenance, technical inspection, and R&D departments, as well as the engine overhaul shop. He has worked as a researcher in corporate projects with Westinghouse, USA, Rolls Royce, UK, and Wind Energy Projects; VUB, Belgium. He taught propulsion and turbomachinery courses in several universities in Egypt, the USA, and Libya. He has lectured in the field of design and performance of aircraft engines and particulate flows in several universities in the USA, Russia, Belgium, UK, Austria, China, Syria, and Japan, including UNLV, NASA Glenn, MIT, UCF, the USAFA and Moscow Institute for Physics and Technology, von Karman Institute, Royal Military College for Science (RMCS), Graz Technical University, Tsinghua and Beijing Universities, Homos University, and Tokyo Metropolitan University and Japanese Environmental Agency. He is a member of 10 International societies and institutions and listed in Marquis Who’s Who in America, Who’s Who in Science and Engineering, Who’s Who in Education. He is author of 12 International textbooks including Aircraft and Rocket Propulsion and Gas Turbine Engines, Taylor & Francis; 2nd ed. (2017) and 1st ed. (2008), Fundamentals of Aircraft and Rocket Propulsion, Springer, UK (2016), and Bird Strike in Aviation, Wiley, 2019. Moreover, he published more than 100 technical papers and reports published in international journals and conferences. He worked as a Chairman, Aeronautical and Spacecrafts department, Zagazig University (2015-2017, and Chairman, Mechanical Power Engineering Department, Zagazig University (1999-2005). He was awarded Distinguished Professor, Zagazig University, 2009. Moscow Institute for Physics and Technology, Russia awarded him the 50 Year Aerospace Medal, 2015. Also, he was awarded the medal of long-life engineering distinction; Egyptian Engineering Syndicate, 2017.