이용복 안경민 김창호 하태웅 2024-01-21T06:01:49Z 2024-01-21T06:01:49Z 2021-09-06 2004-12 2287-9706 https://pubs.kist.re.kr/handle/201004/136973 The floating ring seal has an advantage to find the optimum position by itself, which is used in the turbo pump of a liquid rocket. The main purpose of seals is to reduce the leakage. Especially, seals of the turbo pump for the liquid rocket engine are operated under the serious conditions such as high pressure above 10MPa, very low temperature about -180℃ and high rotating speed above 25,000rpm. So, rotordynamic stability is very important for the system stability. In this paper, the leakage and dynamic characteristics of floating ring seals were investigated by a experimental and analytical method. The theoretical results of the leakage performance for the floating ring seal showed much higher than that of experimental results. On the other hand, the results of stiffness and damping characteristics showed similarity each other. As the shaft speed was increasing, the whirl frequency ratio was increased in the experimental results. 한국유체기계학회 액체 추진 로켓 터보 펌프용 플로팅 링 실에 대한 해석 및 실험 결과의 비교 연구 Comparision of Theoretical analysis with Test Results of Floating Ring Seals for the LRE Turbo Pump Article 2 한국유체기계학회 논문집, v.7, no.6, pp.21 - 27 한국유체기계학회 논문집 7 6 21 27 kci other ART001158715 Floating ring seal(플로팅 링 실) Leakage(누수량) Rotordynamic coefficients(회전체 동역학적 계수) Equivalent whirl frequency ratio(등가 휘돌림 주파수 비) Floating ring seal(플로팅 링 실) Leakage(누수량) Rotordynamic coefficients(회전체 동역학적 계수) Equivalent whirl frequency ratio(등가 휘돌림 주파수 비)