Overview

Ram jet engines are researched and developed as next-generation supersonic aircraft engines. The ram jet engine compresses air at its air intake utilizing its flight speed (ram compression) and burns fuel injected in its combustion chamber. High-temperature and high-pressure combustion gas obtained by the combustion expands at its exhaust nozzle and exhausts in a form of high-speed jet to obtain thrust. Solid propellant rockets used for conventional supersonic engines obtain thrust by burning propellants including both of fuel and oxidizer. On the contrary, ram jet engines uses oxygen in the air as oxidizer so that more fuel can be loaded. To research and develop the ram jet engines, the facility simulates the actual flight environment (altitude and the Mach number) on the ground for performance evaluation.