航空学报 > 2023, Vol. 44 Issue (7): 27099-027099   doi: 10.7527/S1000-6893.2022.27099

航空发动机不确定性设计体系探讨

郑新前1,2, 王钧莹2(), 黄维娜3,4, 伏宇1,3, 程荣辉5, 熊洪洋1,6   

  1. 1.清华大学 航空发动机研究院,北京  100084
    2.清华大学 车辆与运载学院,北京  100084
    3.中国航发四川燃气涡轮研究院,成都  610500
    4.中国航发贵阳发动机设计研究所,贵阳  550081
    5.中国航发沈阳发动机研究所,沈阳  110015
    6.空军装备部,北京  100843
  • 收稿日期:2022-03-02 修回日期:2022-03-16 接受日期:2022-05-26 出版日期:2023-04-15 发布日期:2022-06-08
  • 通讯作者: 王钧莹 E-mail:wang_jy17@163.com
  • 基金资助:
    国家科技重大专项(2017-II-0004-0016)

Uncertainty⁃based design system for aeroengines

Xinqian ZHENG1,2, Junying WANG2(), Weina HUANG3,4, Yu FU1,3, Ronghui CHENG5, Hongyang XIONG1,6   

  1. 1.Institute for Aero Engine,Tsinghua University,Beijing  100084,China
    2.School of Vehicle and Mobility,Tsinghua University,Beijing  100084,China
    3.AECC Sichuan Gas Turbine Establishment,Chengdu  610500,China
    4.AECC Guiyang Engine Design Research Institute,Guiyang  550081,China
    5.AECC Shenyang Engine Research Institute,Shenyang  110015,China
    6.Department of Air Force Equipment,Beijing  100843,China
  • Received:2022-03-02 Revised:2022-03-16 Accepted:2022-05-26 Online:2023-04-15 Published:2022-06-08
  • Contact: Junying WANG E-mail:wang_jy17@163.com
  • Supported by:
    National Science and Technology Major Project(2017-II-0004-0016)

摘要:

航空发动机全生命周期过程中存在着大量的随机和认知不确定性因素,往往带来研发迭代周期长、制造合格率低、使用维护困难等一系列问题。近年来国内外针对不确定性分析已经开展了一系列研究,但尚未从理论层面系统地提出航空发动机不确定性设计体系。在当前航空发动机确定性设计体系的基础上,结合不确定性分析取得的研究成果,对如何构建航空发动机不确定性设计体系、实现航空发动机设计体系的变革进行了探讨。首先归纳了航空发动机中的不确定性因素及其影响,进而对不确定性设计体系的内涵和必要性进行了探讨。不确定性设计体系以实现研发一次成功为最终目标,在设计的各个阶段对性能分散度进行定量化评估与控制,产生全生命周期内性能、可靠性、鲁棒性和成本等方面综合最优的设计方案。基于这一内涵界定,对不确定性设计体系的流程、方法、平台、规范和组织等各项基本要素逐项进行了分析,提出了不确定性设计体系建设的阶段性展望、预期收益以及各项挑战。

关键词: 航空发动机, 不确定性分析, 鲁棒性设计, 可靠性设计, 设计体系

Abstract:

A significant number of random and epistemic uncertainties exist in the whole life cycle of an aeroengine, causing problems such as a long design iteration cycle, low manufacturing qualification rate, and difficulties in maintenance. Recent years have witnessed a series of research on uncertainty analysis at home and abroad; however, the uncertainty design system of aeroengines has not been proposed systematically at the theoretical level. Based on the current deterministic design system and the results of uncertainty research, this paper discusses the construction of the uncertainty-based design system and realization of the design system reform for aeroengines. The uncertainty factors and their influence on aeroengines are first summarized, followed by discussion of the definition and necessity of the uncertainty-based design system. The ultimate goal of the uncertainty-based design system is to achieve successful research and development with a single iteration. The performance distribution is quantitatively evaluated and controlled at each design stage to produce a comprehensive optimal design scheme in terms of performance, reliability, robustness, and costs in the whole life cycle. Based on this definition, the basic elements of the uncertainty-based design system are analyzed, including the process, method, platform, specification, and organization. Finally, the periodic prospects, expected benefits, and challenges of the uncertainty-based design system are presented.

Key words: aeroengine, uncertainty analysis, robust design, reliability-based design, design system

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