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http://dx.doi.org/10.15435/JILASSKR.2015.20.2.114

Injection Condition Effects of a Pintle Injector for Liquid Rocket Engines on Atomization Performances  

Son, Min (한국항공대학교 대학원)
Yu, Kijeong (한국항공대학교 대학원)
Koo, Jaye (한국항공대학교 항공우주 및 기계공학부)
Kwon, Oh Chae (성균관대학교 기계공학부)
Kim, Jeong Soo (부경대학교 기계공학부)
Publication Information
Journal of ILASS-Korea / v.20, no.2, 2015 , pp. 114-120 More about this Journal
Abstract
Effects of injection conditions on a pintle injector which is proper to recent liquid rocket engines requiring low cost, low weight, high efficiency and reusability were studied. The pintle injector with a typical moving pintle was used for atmospheric experiment using water and air. Injection pressures of water were considered 0.5 and 1.0 bar, 0.1 to 1.0 bar for injection pressures of air and 0.2 to 1.0 mm for pintle opening distance. Sauter mean diameters (SMD) of spray was measured at 50 mm distance from a pintle tip and SMD was treated as a representative parameter in this study. As a result, because of shape characteristics of the pintle injector, there was a transient region between the pintle opening distances of 0.6 and 0.7 mm and this region affected to mass flow rates and SMDs. Also, Reynolds numbers for gas, Weber numbers and momentum ratios were adopted as major non-dimensional paramters and the momentum ratio has strong correlation with SMD.
Keywords
Pintle Injector; Liquid Rocket Engine; Spray; Atomization;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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