K. Sathish Kumar, PhD is a professor in the Department of Aeronautical Engineering at the Nehru Institute of Engineering and Technology, Coimbatore, Tamil Nadu, India with over 15 years of research and teaching experience. He has authored numerous articles in international journals and serves as a mentor to several start-ups, fostering innovation in aerospace. His research focuses on jet mixing characteristics, nozzle design, and supersonic flow control. R. Naren Shankar, PhD is a professor in the Department of Aeronautical Engineering at Vel Tech Rangarajan Dr. Sagunthala Research and Development Institute of Science and Technology, India. He has published one book and 32 research articles, and has filed three patents. His research interests encompass high-speed jets, aerodynamics, propulsion, and unconventional energy engineering.