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http://dx.doi.org/10.5139/JKSAS.2020.48.10.801

Opening Characteristics of a Main Oxidizer Shut-off Valve at Different Valve Inlet Pressures  

Hong, Moongeun (Launcher Propulsion Control Team, Korea Aerospace Research Institute Aerospace System Engineering Department, University of Science and Technology)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.48, no.10, 2020 , pp. 801-807 More about this Journal
Abstract
Opening characteristics of a main oxidizer shut-off valve at different valve inlet pressures have been experimentally investigated. The pilot pressure at the moment of the valve opening increases linearly with increasing the valve inlet pressure and the increased pilot pressure reduces the valve travel time. As the pilot pressure increases at the moment of valve opening, the time to start opening the valve is delayed resulting in increasing the valve opening time. With the increment of the valve inlet pressure, the valve opening time is mainly determined by the time required for the pilot pressure to start opening the valve. Therefore the design of a pilot gas supply system can readily control the valve inlet pressure at the valve opening as well as the amount of oxidizer supplied to a combustion chamber during the engine startup.
Keywords
Main Oxidizer Shut-off Valve; Valve Opening Characteristics; Valve Opening Time; Valve Travel Time; Engine Startup;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
연도 인용수 순위
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