变循环发动机稳态控制规律设计的新方法

推进技术 ›› 2017, Vol. 38 ›› Issue (10): 2262-2270.

变循环发动机稳态控制规律设计的新方法

陈玉春,贾琳渊,任成,周超

西北工业大学动力与能源学院，陕西西安 710072,西北工业大学动力与能源学院，陕西西安 710072,西北工业大学动力与能源学院，陕西西安 710072,西北工业大学动力与能源学院，陕西西安 710072

发布日期:2021-08-15
作者简介:陈玉春，男，博士，教授，博导，研究领域为航空发动机总体设计。

An Innovative Method for Design of Steady State Control Law for Variable Cycle Engines

School of Power and Energy，Northwestern Polytechnical University，Xi’an 710072，China,School of Power and Energy，Northwestern Polytechnical University，Xi’an 710072，China,School of Power and Energy，Northwestern Polytechnical University，Xi’an 710072，China and School of Power and Energy，Northwestern Polytechnical University，Xi’an 710072，China

Published:2021-08-15

摘要/Abstract

摘要： 变循环发动机(VCE)具有较多的可调参数，为了进行变循环发动机的多变量稳态控制规律优化设计，提出了用于变循环发动机稳态控制规律优化设计的一种新方法-逆算法。该方法基于敏感性系数矩阵，采用可调参数替换传统部件级性能计算模型中的独立变量，在给定变循环发动机主要状态参数和部件参数的条件下，实现了可调参数的求解，进一步完成发动机稳态控制规律的优化设计。对比表明，逆算法的计算精度和收敛速度与传统算法一致，收敛性得到了改善。对带有核心机驱动风扇(CDFS)的双外涵变循环发动机亚声速巡航的节流状态控制规律优化后，使得巡航推力下的安装耗油率比定几何的双外涵和单外涵发动机分别下降7.8%和16.4%，而地面安装耗油率最大降低约3.4%。结果表明，逆算法是变循环发动机稳态控制规律优化设计的一种有效途径。

关键词: 逆算法；核心机驱动风扇；变循环发动机；稳态控制规律

Abstract: Variable cycle engine (VCE) has several variable geometry parameters. In this paper，a new method called ‘Reverse Method’ was developed to design the multiple variable steady state control law for VCEs. Based on the sensitivity matrix，the variables of the component based performance model were replaced with variable geometric parameters. Thus the state factors and components parameters were given while the variable geometric parameters were iterated during the procedure of engine off-design balancing which allows the optimal design of VCE steady state control law. Results showed that the ‘Reverse Method’ has the same accuracy and rate of convergence as the conventional component based model，while its astringency is better. The subsonic cruise control law for a dual-bypass VCE is optimized employing the ‘Reverse Method’ to minimize the installed specific fuel consumption (SFC). Optimization results showed 7.8% and 16.4% reduction in installed SFC compared to the fixed geometry dual-bypass mode and the single-bypass mode respectively. By using this optimized control law，the sea level installed SFC was decreased by 3.4%. It can be concluded that the ‘Reverse Method’ is a practical way to design the optimal steady state control law for VCEs.

Key words: Reverse method；Core driven fan stage；Variable cycle engine；Steady state control law

陈玉春,贾琳渊,任成,周超. 变循环发动机稳态控制规律设计的新方法[J]. 推进技术, 2017, 38(10): 2262-2270.

CHEN Yu-chun,JIA Lin-yuan,REN Cheng,ZHOU Chao. An Innovative Method for Design of Steady State Control Law for Variable Cycle Engines[J]. Journal of Propulsion Technology, 2017, 38(10): 2262-2270.

参考文献

[1] Louay A. Variable Cycle Propulsion Systems for a Supersonic Civil Transport[D]. Cranfield: Cranfield University, 1997.
[2] 唐海龙. 面向对象的航空发动机性能仿真系统及其应用[D]. 北京:北京航空航天大学, 2000.
[3] 刘增文, 王占学, 蔡元虎. 变循环发动机模态转换数值模拟[J]. 航空动力学报, 2011, 26(9): 2128-2132.
[4] 刘增文, 王占学, 黄红超, 等. 变循环发动机性能数值模拟[J]. 航空动力学报, 2010, 25(6): 1310-1315.
[5] 林雪平. 变几何发动机稳态性能计算研究[D]. 西安: 西北工业大学, 2004.
[6] 苟学中. 变循环发动机建模及控制规律研究[D]. 南京:南京航空航天大学, 2011.
[7] 周红. 变循环发动机及其与飞机一体化设计研究[D]. 西安:西北工业大学, 2016.
[8] 王元. 变循环发动机建模及性能寻优控制技术研究[D]. 南京航空航天大学, 2015.
[9] 王元, 张平平, 李秋红, 等. 变循环发动机建模方法研究及验证[J]. 航空动力学报, 2014, 29(11): 2643-2651.
[10] 孙丰勇, 张海波, 叶志锋, 等. 航空发动机超声速巡航性能寻优控制研究[J]. 推进技术, 2015, 36(8): 1248-1256. (SUN Feng-yong, ZHANG Hai-bo, YE Zhi-feng, et al. A Study of Aero-Engine Supersonic Cruise[J]. Journal of Propulsion Technology, 2015, 36(8): 1248-1256.)
[11] 骆广琦, 李游, 刘琨, 等. 变循环发动机组合变几何调节方案[J]. 航空动力学报, 2014, 29(10): 2273-2278.
[12] 骆广琦, 李游, 吴涛, 等. 基于蜂群算法的变循环发动机最小耗油率优化[J]. 航空发动机, 2016, 42(1): 1-5.
[13] Simmons R J. Design and Control of a Variable Geometry Turbofan with an Independently Modulated Third Stream[D]. Ohio: Ohio State University, 2009.
[14] 贾琳渊, 陈玉春, 解俊琪, 等. 超声速进气道进发匹配安装性能快速计算方法[J]. 推进技术, 2017, 38(3): 510-518. (JIA Lin-yuan, CHEN Yu-chun, XIE Jun-qi, et al. A Simplified Method to Simulate Supersonic Inlet Installed Performance in Terms of Engine and Inlet Matching[J]. Journal of Propulsion Technology, 2017, 38(3): 510-518.)
[15] Mattingly J D. Aircraft Engine Design[M]. Second Edition. Reston, Virginia: AIAA, 2002.
[16] Johnson J E. Variable Cycle Engines-The Next Step in Propulsion Evolution[C]. California: 12th Propulsion Conference, 1976.　　　　　　　　　　　　　*　收稿日期:2017-01-22；修订日期:2017-03-27。作者简介:陈玉春,男,博士,教授,博导,研究领域为航空发动机总体设计。E-mail: chych888@nwpu.edu.cn(编辑:田佳莹)