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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2023, Vol. 44 ›› Issue (7): 27099-027099.doi: 10.7527/S1000-6893.2022.27099

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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)

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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