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강철웅(Cheolwoong Kang),이신우(Shinwoo Lee),한선우(Sunwoo Han),이강영(Kangyeong Lee),정하동(Hadong Jung),최동우(Dongwoo Choi),안규복(Kyubok Ahn) 한국추진공학회 2023 한국추진공학회지 Vol.27 No.1
Results of dry-run tests, cold-flow tests, and hot-firing tests performed to throttle a methane engine uni-element thrust chamber are covered in the paper. After installing flow control valves on the oxidizer and fuel supply lines of the methane engine combustion test facility, a number of dry-run tests were repeated so that the valves could reach set strokes quickly and stably. Then, cold-flow tests using liquid nitrogen and gaseous nitrogen were conducted to confirm the stable supply of the simulated propellants according to the valve control. Finally, using liquid oxygen and gaseous methane, hot-firing tests for fixed and continuous thrust control of 50% to 10% of the nominal thrust were successfully performed.
강철웅(Cheolwoong Kang),황동현(Donghyun Hwang),안종현(Jonghyeon Ahn),이준서(Junseo Lee),이다인(Dain Lee),안규복(Kyubok Ahn) 한국추진공학회 2021 한국추진공학회지 Vol.25 No.3
This paper deals with the construction of a combustion test facility and preliminary tests for hot-firing tests of a methane engine. First, the combustion test facility for a 1 kN-class thrust chamber using liquid oxygen/gas methane as propellants was designed and built. Before hot-firing tests, the cold-flow tests of each propellant line and the ignition tests of torch igniter/afterburner were performed to verify propellant supply stability of the combustion test facility, operation of the control and measurement system, and successful ignition. Finally, a preliminary hot-firing test was conducted to measure the combustion efficiency, heat flux, and combustion stability of a thrust chamber prototype. The constructed combustion test facility will be helpfully used for basic research and development of methane engine thrust chambers.