2023 年 9 月
第 44 卷 第 9 期
推 进 技 术
JOURNAL OF PROPULSION TECHNOLOGY
Sept. 2023
Vol.44 No.9
2206026-1
真实进气条件下发动机稳定裕度损失评估 *
任丁丁,刘思余,王俊琦,杜紫岩
(中国航空工业集团公司 中国飞行试验研究院,陕西 西安 710089)
摘 要:为了确定航空发动机压缩系统在进气总压畸变条件下的稳定裕度损失,开展了基于平行压
气机模型的稳定裕度损失评估方法研究。通过对试飞中实测的总压畸变图谱进行等效转换,转换结果作
为平行压气机模型的输入,得到畸变条件下压缩系统的稳定边界,再通过试飞数据确定压缩系统的流
量,从而确定畸变时刻压缩系统的稳定裕度损失。对某型涡扇发动机进行计算,得到周向总压畸变强度
为3.3%时风扇的稳定裕度损失为3.8%。通过对两种不同畸变强度的周向总压畸变的计算结果的对比,
表明该方法可用于确定总压畸变条件下的稳定裕度损失。
关键词:航空发动机;试飞数据;稳定裕度损失;总压畸变;平行压气机模型;稳定边界
中图分类号:V235.1 文献标识码:A 文章编号:1001-4055(2023)09-2206026-07
DOI:10.13675/j.cnki. tjjs. 2206026
Assessment of Stability Margin Loss of Aeroengine
under Actual Inlet Condition
REN Ding-ding,LIU Si-yu,WANG Jun-qi,DU Zi-yan
(Chinese Flight Test Establishment,Aviation Industry Corporation of China,Xi’an 710089,China)
Abstract:To determine the stability margin loss of the aeroengine compression system under the condition
of inlet total pressure distortion, the stability margin loss evaluation method, which is based on the parallel com‐
pressor model, was studied. Measured total pressure distortion contour maps in flight test were equivalently con‐
verted. Conversion results were the inputs of the parallel compressor model, the stability boundary of compression
system was determined under distorted flow. And the mass flow of compression system was determined through
the flight test data, then, the stability margin loss of compression system can be calculated at distorted time. For
a turbofan engine, the stability margin loss of the fan is 3.8% when the circumferential total pressure distortion in‐
tensity is 3.3%. The comparison of the calculated results of different intensity of circumferential total pressure dis‐
tortion shows that the method can be used to determine the stability margin loss under total pressure distortion.
Key words:Aeroengine;Fight-test data;Loss of stability margin;Total-pressure distortion;Parallel
compressor model;Stability boundary
1 引 言
发动机进口压力畸变由飞机进气道产生,飞机
在地面开车及各种飞行状态下均会产生发动机进口
压力畸变,发动机进气畸变会对发动机的性能[1-2]
、稳
定性[3-5]
及控制系统等造成影响[1]
。当发动机的压气
机气动失稳进入旋转失速或喘振等不稳定工作状态
时,会直接威胁飞行安全,因此在实际飞行过程中,
* 收稿日期:2022-06-09;修订日期:2022-07-20。
基金项目:航空工业试飞中心技术创新项目(YY-2121-FDJ)。
通讯作者:任丁丁,硕士,工程师,研究领域为进气道/发动机相容性飞行试验技术。E-mail:1251913959@qq.com
引用格式:任丁丁,刘思余,王俊琦,等. 真实进气条件下发动机稳定裕度损失评估[J]. 推进技术,2023,44(9):2206026.
(REN Ding-ding, LIU Si-yu, WANG Jun-qi, et al. Assessment of Stability Margin Loss of Aeroengine under Actual
Inlet Condition[J]. Journal of Propulsion Technology,2023,44(9):2206026.)