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http://dx.doi.org/10.6108/KSPE.2021.25.3.014

Study on the Spray Characteristics of Liquid/Liquid Pintle Injector by Opening Distance  

Yoon, Wonjae (School of Mechanical Engineering, Chungbuk National University)
Ahn, Jonghyeon (School of Mechanical Engineering, Chungbuk National University)
Ahn, Kyubok (School of Mechanical Engineering, Chungbuk National University)
Yoon, Hosung (New Business Development Department, Spacesolutions Co., Ltd.)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.25, no.3, 2021 , pp. 14-25 More about this Journal
Abstract
An experimental study was conducted on the spray characteristics of the pintle injector by opening distance. The discharge coefficient of the pintle injector was investigated and the spray angle was measured by taking the spray image by test conditions. As a result of the measurement of the discharge coefficient, it was confirmed that the change in the discharge coefficient of the outer injector was not significant over the experimental conditions, but the change in the discharge coefficient of the inner injector was decreased as the flow rate increased. Measurement of the spray angle showed that the change in the spray angle was not significant in the conditions under which the spray was fully developed, but the spray was not fully developed at low flow rates. This confirmed the possibility of thrust control using the pintle injector.
Keywords
Pintle Injector; Discharge Coefficient; Spray Angle; Throttling;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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