2023 年 9 月
第 44 卷 第 9 期
推 進(jìn) 技 術(shù)
JOURNAL OF PROPULSION TECHNOLOGY
Sept. 2023
Vol.44 No.9
2206026-1
真實(shí)進(jìn)氣條件下發(fā)動機(jī)穩(wěn)定裕度損失評估 *
任丁丁,劉思余,王俊琦,杜紫巖
(中國航空工業(yè)集團(tuán)公司 中國飛行試驗(yàn)研究院,陜西 西安 710089)
摘 要:為了確定航空發(fā)動機(jī)壓縮系統(tǒng)在進(jìn)氣總壓畸變條件下的穩(wěn)定裕度損失,開展了基于平行壓
氣機(jī)模型的穩(wěn)定裕度損失評估方法研究。通過對試飛中實(shí)測的總壓畸變圖譜進(jìn)行等效轉(zhuǎn)換,轉(zhuǎn)換結(jié)果作
為平行壓氣機(jī)模型的輸入,得到畸變條件下壓縮系統(tǒng)的穩(wěn)定邊界,再通過試飛數(shù)據(jù)確定壓縮系統(tǒng)的流
量,從而確定畸變時刻壓縮系統(tǒng)的穩(wěn)定裕度損失。對某型渦扇發(fā)動機(jī)進(jìn)行計(jì)算,得到周向總壓畸變強(qiáng)度
為3.3%時風(fēng)扇的穩(wěn)定裕度損失為3.8%。通過對兩種不同畸變強(qiáng)度的周向總壓畸變的計(jì)算結(jié)果的對比,
表明該方法可用于確定總壓畸變條件下的穩(wěn)定裕度損失。
關(guān)鍵詞:航空發(fā)動機(jī);試飛數(shù)據(jù);穩(wěn)定裕度損失;總壓畸變;平行壓氣機(jī)模型;穩(wěn)定邊界
中圖分類號:V235.1 文獻(xiàn)標(biāo)識碼:A 文章編號: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
發(fā)動機(jī)進(jìn)口壓力畸變由飛機(jī)進(jìn)氣道產(chǎn)生,飛機(jī)
在地面開車及各種飛行狀態(tài)下均會產(chǎn)生發(fā)動機(jī)進(jìn)口
壓力畸變,發(fā)動機(jī)進(jìn)氣畸變會對發(fā)動機(jī)的性能[1-2]
、穩(wěn)
定性[3-5]
及控制系統(tǒng)等造成影響[1]
。當(dāng)發(fā)動機(jī)的壓氣
機(jī)氣動失穩(wěn)進(jìn)入旋轉(zhuǎn)失速或喘振等不穩(wěn)定工作狀態(tài)
時,會直接威脅飛行安全,因此在實(shí)際飛行過程中,
* 收稿日期:2022-06-09;修訂日期:2022-07-20。
基金項(xiàng)目:航空工業(yè)試飛中心技術(shù)創(chuàng)新項(xiàng)目(YY-2121-FDJ)。
通訊作者:任丁丁,碩士,工程師,研究領(lǐng)域?yàn)檫M(jìn)氣道/發(fā)動機(jī)相容性飛行試驗(yàn)技術(shù)。E-mail:1251913959@qq.com
引用格式:任丁丁,劉思余,王俊琦,等. 真實(shí)進(jìn)氣條件下發(fā)動機(jī)穩(wěn)定裕度損失評估[J]. 推進(jìn)技術(shù),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.)