우주발사체 액체로켓의 추진기관용 고강도 3-Way 파이로밸브 파단 특성 Rupture Characteristics of High Strength 3-Way Pyrovalve for Propulsion Engine of Space Launch Vehicle Liquid Rocket
pp.618-626
In this paper, based on the existing research, we define the parameters for the number of ignition devices to be applied to the pyrovalve, the operation and airtightness according to the temperature, the material of the nipple and the thickness of the fractured part, and ANSYS Ver. 19.2 was used to analyze the FEA model, and a comparative analysis was conducted through structure analysis according to the piston shape of the pyrovalve. In addition, an experimental study was conducted by manufacturing a prototype according to the design variables. As a result, high-strength pyrovalves can stably supply working fluids such as fuel and oxidizer for space launch vehicle propulsion engines, as well as precisely control flow path switching was confirmed.