| Citation: | PEI Xitong, ZHANG Louyue, WANG Xi, et al. Design and application of intake and exhaust simulation system for altitude ground test facilities[J]. Journal of Aerospace Power, 2022, 37（10）：2074-2089 doi: 10.13224/j.cnki.jasp.20220122
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Based on the layout and test characteristics of the aviation engine altitude ground test facilities, the simulation system was created, the required equipment was modeled, and application research was conducted. The mathematical modeling of key test equipment such as piping, regulating valves, throttling components, hydraulic control system and Laval nozzle (used to simulate engine flow) was carried out to obtain a model library. A comprehensive digital simulation system and a semi-physical simulation system were built, and their performance was demonstrated by comparing them with real-life test results. The engine’s intake temperature and pressure calculated by the simulation system were compatible with the dynamic change trend when compared with the test data, according to the simulation verification results and analysis. Where temperature relative error was limited to a maximum of 0.5 percent, the pressure relative error was limited to a maximum of 3 percent. The pressure regulation time was shortened to 1/3 by the control technique created based on the model and simulation system of the high-altitude test equipment, the transition state regulation performance was significantly enhanced.
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