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http://dx.doi.org/10.15435/JILASSKR.2020.25.3.126

Study on Spray Angle of a Throttleable Pintle Injector according to Total Momentum Ratio based on Hot Fire Test Conditions  

Heo, Subeom (서울대학교 항공우주공학과)
Kim, Dae Hwan (서울대학교 항공우주공학과)
Lee, Suji (서울대학교 항공우주공학과)
Yoon, Youngbin (서울대학교 항공우주신기술연구소)
Publication Information
Journal of ILASS-Korea / v.25, no.3, 2020 , pp. 126-131 More about this Journal
Abstract
Throttleable rocket engines are in high demand due to the diversification of space missions. Pintle injector is known to be suitable for throttleable rocket engines, because of its high efficiency in overall thrust zone. In this study, the relationship between spray angle of a throttleable pintle injector and total momentum ratio based on hot fire test conditions was investigated. As a result, the spray angle in 100% and 60% throttling level is higher than the spray angle obtained by the case which considers only propellant mass flow rate, owing to higher total momentum ratio (TMR). The results of this study may be useful for predicting spray angle in hot fire test.
Keywords
Pintle injector; Spray angle; Total momentum ratio; Liquid rocket engine;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 M. J. Casiano, J. R. Hulka, and V. Yang, "Liquid-Propellant Rocket Engine Throttling: A Comprehensive Review", Journal of Propulsion and Power, Vol. 6, No. 5, 2010, pp. 897-923.
2 M. Son, K. Radhakrishnan, J. Koo, "Design Procedure of a Movable Pintle Injector for Liquid Rocket Engines", Journal of Propulsion and Power, Vol. 33, No. 4, 2017, pp. 858-869.   DOI
3 손민, 유기정, 구자예, 권오채, 김정수, "액체로켓 핀틀인젝터의 분사조건이 미립화 성능에 미치는 영향", 한국액체미립화학회지, 제20권, 제2호, 2015, pp. 114-120.   DOI
4 S. Lee, D. Kim, J. Koo, and Y. Yoon, "Spray characteristics of a pintle injector based on annular orifice area", Acta Astronautica, Vol. 167, 2020, pp. 201-211.   DOI
5 유기정, 손민, K. Radhakrishnan, 김희동, 구자예, "가변 추력용 핀틀 분사기에서 추진제 상에 따른 상압분무 특성", 한국액체미립회학회지, 제21권, 제1호, 2016, pp. 13-19.
6 P. A. Starkey, R. K. Cohn, and D. G. Talley, "The Development of a Methodology to Scale Between Cold-Flow and Hot-Fire Evaluations of Gas-Centered Swirl Coaxial Injectors", 52nd JANNAF Propulsion Meeting, 2004.
7 S. Lee, D. Kim, J. Koo, and Y. Yoon, "Corrigendum to "Spray characteristics of a pintle injector based on annular orifice area" [Acta Astronautica 167 (2020) 201-211]", Acta Astronautica, Vol. 173, 2020, pp. 473-474.   DOI
8 K. Lee, D. Shin, M. Son, H. Moon, and J. Koo, "Flow visualization of cryogenic spray from a movable pintle injector", Journal of Visualization, Vol. 22, 2019, pp. 773-781.   DOI