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分析和讨论了涡扇发动机接通加力过程对主机工作稳定性产生影响的现象和原因,包括加力外涵接通过程引起低压转速降低明显、加力振荡燃烧引起转速和排气温度摆动明显、加力供油量不合理引起发动机喘振、加力供油和尾喷管喉道控制不匹配引起发动机超转等。研究成果对于加力接通试验过程的安全保障、试验规范或要求的细化及加力系统的改进完善都有重要的参考价值。
The phenomena and reasons that affect the working stability of the turbofan engine during the afterburner process are analyzed and discussed, including the obvious decrease of the low pressure speed caused by the external force connection during the external force application, the obvious increase of the rotating speed and the exhaust gas temperature due to the forced oscillation combustion , Afterburning unreasonable fuel supply caused by surge of the engine, afterburner refueling and throat nozzle mismatch caused by engine over-rotation and so on. The research results have important reference value for the safety guarantee during the process of afterburner connection test, the refinement of test specification or requirement and the improvement and improvement of afterburner system.