한국형발사체 75톤급 엔진 개발 시험

As a first phase of the 75 tonf LOx/Kerosene liquid rocket engine development for KSLV-II first Stage Engine, hot firing test of 75 tonf engine are performed. The results of firing test on first stage 75-tonf engine system including combustion chamber, turbopump, gas generator, propellant supply system are presented. For the development of startup sequence of LOx-Kerosene engine system, engine startup using pyrostarter, ignition of gas generator, steady operation and engine shutdown is successfully performed. The results of hot firing test of 75 tonf thrust engine system will be used for the determination of startup sequence of 75 tonf engine system for KSLV-II first Stage.