发动机结构审定的基本原理及其应用  

Principle and application of engine structure certification

作　　者：张弓 何歆 冯建文 甄博 ZHANG Gong;HE Xin;FENG Jianwen;ZHEN Bo(Structure Certification Division,Airworthiness Certification Center,Civil Aviation Administration of China,Beijing 100102,China)

机构地区：[1]中国民用航空适航审定中心结构审定室,北京100102

出　　处：《航空动力学报》2023年第8期2034-2041,共8页Journal of Aerospace Power

摘　　要：为了在型号审定中更好地形成从要求制定、验证表明到使用中保持发动机安全性的闭环系统,通过综合失效设计管理、应力-强度干涉、典型结构特征和运行特性研究了发动机结构审定的基本原理,并建立了相应的工作模型。采用工作模型对发动机结构审定所涉及的典型失效模式进行分析,确定了12个条款的全部工作模型关键点,揭示了根据零部件失效后果确定条款适用对象,根据失效模式可控制性确定具体要求的条款内在关联关系。以典型专用条件和豁免为对象说明了限寿件和振动试验条款的安全意图及偏离处理中基本原理的应用。The basic principle and workflow of civil engine structure certification was established to form a closed-loop system from airworthiness requirement formulation and compliance verification to maintain engine safety in service,by using failure design management,stress-strength interference model,and study of characteristics and operation conditions on typical structure component.Engine part failure modes were analyzed following the established workflow,with the key points of the 12 engine structure regulatory sections identified.Consequence and controllability of each potential failure mode determined the applicable regulatory requirements for each engine part as well as their intrinsic associations.A special condition case and an exemption case were employed as two examples to further discuss the safety intention of the regulatory requirements and application of the principle in deviation treatment.

关 键 词：适航 民用航空发动机 型号审定 审定原理 发动机结构 

分 类 号：V231[航空宇航科学与技术—航空宇航推进理论与工程]