Browse > Article

Low Frequency Dynamic Characteristics of Liquid-Propellant Rocket Engine Combustor  

Ha Seong-Up (한국항공우주연구원 추진제어그룹)
Jung Young-Seok (한국항공우주연구원 우주발사체사업단)
Kim Hui-Tae (과학기술연합대학원대학교)
Han SangYeop (한국항공우주연구원 우주발사체사업단)
Cho Gwang-Rae (한국항공우주연구원 우주발사체사업단)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.8, no.4, 2004 , pp. 91-101 More about this Journal
Abstract
With the mathematic linear model of a combustor which consists of a combustion chamber and injectors, the analysis of low frequency dynamic characteristics of a liquld-propellant rocket engine combustor was performed. Propellant mass flowrate was varied by combustion chamber pressure feedback, therefore low frequency oscillation was appeared. Increasing the time constant of a combustion chamber and injector pressure differences and decreasing combustion time delay increased the combustor system stability. The variation of injector time constant little affected stability. The system was always stable, when there was no combustion time delay. Increasing combustion time delay decreased oscillation frequency and damping ratio, and the system eventually became unstable.
Keywords
Rocket Engine; Combustor; Dynamic Characteristics; Mathematical Model;
Citations & Related Records
연도 인용수 순위
  • Reference
1 H. Lefebvre, 'Atomization and Sprays,' Hemisphere Publishing Corporation, 1989
2 Y.C. Lee, M.R. Gore and C.C. Ros,'Stability and Control of Liquid Propellant Rocket Systems,' ARS Journal, MarchApril, 1953
3 Avandelino Santana Junior and Luiz Carlos Sandoval Goes, 'Dynamic Modeling and Stability Analysis of a Liquid Rocket Engine,' (journal name is unknown)
4 Martin Summerfield, 'A theory of Unstable Combustion in Liquid Propellant Rocket Systems,' ARS Journal. September, 1951
5 David T. Harrje (editor), 'Liquid Propellant Rocket Combustion. Instability,' NASA SP-194, 1972
6 조광래 외 다수, '발사체용 추진기관 성능개량 탐색연구. 로켓엔진 추력제어기술 개발. 제 1차년도 최종보고서,' 한국항공우주연구원, 2004
7 Dieter K. Huzel and David H. Huang, 'Modern Engineering for Design of Liquid-Propellant Rocket Engines,' Vol. 147 Progress in Astronautics and Aeronautics, AIAA. 1992
8 NASA Report, 'Liquid Propellant Gas Generators,' SP-8081, NASA. 1972