| Citation: | YANG Yikun, MA Jing, HUANG Ao, et al. Modeling of aero-engine afterburning fuel metering module with natural frequency studies[J]. Journal of Aerospace Power, 2025, 40（5）：20230593 doi: 10.13224/j.cnki.jasp.20230593
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Considering the complexities of the structure and the difficulties in experimental analysis of a certain type of aircraft engine’s afterburner fuel metering module, digital modeling and simulation were conducted in AMESim based on force balance and flow balance equations. Additionally, steady-state hydrodynamic model parameters were obtained using flow field simulation analysis software. Studies on the performance of pressure-equalizing valves and metering valves in different zones of the afterburner were carried out. Utilizing AMESim’s linear analysis tool, special research was conducted on the natural frequencies of critical valves in various zones of the afterburner, along with their influencing factors. The simulation results showed that the established model had an error of less than 5% compared with experimental data, demonstrating high accuracy and reliability. Moreover, the research on natural frequencies could provide a theoretical support and practical foundation for improvements and engineering troubleshooting of this type of fuel metering module.
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