涡扇发动机接通加力过程对主机工作稳定性影响的试验研究

Influence of Afterburner Transients on Turbofan Engine Operation Stability in Flight Test

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 of influences of turbofan engine afterburner transients on engine operation stability such as low-pressure rotor speed especially decreased, rotor speeds and exhaust temperature greatly swayed, engine surge and overspeed were analyzed and discussed. The work in this paper plays an important role in maintaining security, with optimizing afterburner transients test specification or criterion and improving afterburner system.