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Development of a diaphragm type actuator  

Lee, Joongyoup (공급계통팀)
Jeong, Daeseong (공급계통팀)
Han, Sangyeop (공급계통팀)
Publication Information
Aerospace Engineering and Technology / v.13, no.2, 2014 , pp. 160-166 More about this Journal
Abstract
The shutoff valve of a Liquid Rocket Engines (LRE) controls the flow of propellant between turbo-pump and combustion devices of LRE using pilot pressure and spring force. The shutoff valve is closed when the pilot pressure is removed from the diaphragm type actuator. During designing process of life cycle is when should be analyzed according to the characteristics of forces with respect to the opening and closing of diaphragm actuator. A valve has been designed to adjust the control pressure which is required to open a poppet and to determine the working fluid pressure at which a valve starts to close. During flow capacity test under room temperature as a part of life cycle tests, the leakage in diaphragm was occurred due to the leakage of sheet welding sections. The operating cycle of the diaphragm type actuator is about 61 times with 22 MPa of pilot pressure.
Keywords
Diaphragm; Pilot pressure; Actuator;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
연도 인용수 순위
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