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http://dx.doi.org/10.5139/JKSAS.2018.46.6.487

Prediction on Throttling Performance of a Movable Sleeve Injector for Deep Throttling  

Park, Sunjung (Department of Aerospace Mechanical Engineering, Korea Aerospace University)
Nam, Jeongsoo (Department of Aerospace Mechanical Engineering, Korea Aerospace University)
Lee, Keonwoong (Department of Aerospace Mechanical Engineering, Korea Aerospace University)
Koo, Jaye (School of Aerospace Mechanical Engineering, Korea Aerospace University)
Hwang, Yongsok (Agency of Defense Development)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.46, no.6, 2018 , pp. 487-495 More about this Journal
Abstract
Experimental analysis of the spray characteristics of the movable sleeve injector, which can simultaneously control the area of the annular gap and the pintle gap, has been studied and a method for controlling the uniform performance over a wide thrust range has been studied. It is confirmed that the design flow rate is not satisfied when the constant pressure difference is set regardless of the opening distance of the sleeve. In order to improve this, the differential pressure in the annular gap and the pintle gap was applied differently according to the opening distance. It was confirmed that the design flow rate was satisfied within the operating range and thrust control was linear from 25% to 100% in linear sleeve area.
Keywords
Pintle Injector; TMR; Spray Angle; Liquid-Liquid Spray; Deep Throtthing;
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