1. Research Associate, School of Mechanical Engineering, National Technical Univ. of Athens, 15780 Athens, Greece.
2. Professor Emeritus, School of Mechanical Engineering, National Technical Univ. of Athens, 15780 Athens, Greece (corresponding author).
3. Associate Professor, School of Mechanical Engineering, National Technical Univ. of Athens, 15780 Athens, Greece.
4. Associate Professor, Propulsion and Thermal Systems Laboratory, Thermodynamic and Propulsion Systems Section, Hellenic Air Force Academy, Dekelia Air Force Base, Attiki, Greece.