刘文龙1,2 ,杨宇1,2 ,张大鹏 3 ,刘新宇 3 ,孔德龙 1,2.涡扇发动机主轴承试验器考核试验方法[J].航空发动机,2023,49(6):109-114
涡扇发动机主轴承试验器考核试验方法
Rig Test Method for Turbofan Engine Main Bearing Assessment
  
DOI:
中文关键词:  涡扇发动机  主轴承  试验器试验  极限工况
英文关键词:turbofan engine  main bearing  rig test  extreme operational condition
基金项目:航空动力基础研究项目资助
作者单位
刘文龙1,2 ,杨宇1,2 ,张大鹏 3 ,刘新宇 3 ,孔德龙 1,2 1.中国航发沈阳发动机研究所2.中国航发航空发动机动力传输重点实验室:沈阳 110015 3.中国航发哈尔滨轴承有限公司:哈尔滨 150500 
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中文摘要:
      针对涡扇发动机主轴承试验器考核试验,从验证轴承的自身质量和轴承与发动机工况适应性的角度出发,以GJB 7268- 2011为指导,提出了一种基于发动机常规工况和极限工况的轴承试验器考核方法。该方法在传统试验基础上,对常规试验项目的 试验程序进行了细化,增设了短时多频次滑油中断试验、超温试验、超转试验、陀螺力矩试验及不对中试验等项目,提供了各试验 程序的编制要点和示例,并在涡扇发动机主轴承研制过程中对该方法进行了应用,结果表明:试验轴承通过了全部试验项目考核, 且成功装配发动机通过了持久试车验证。该试验方法可以基本覆盖该型涡扇发动机的使用工况边界,达到了在发动机整机装配 前考核主轴承工况适应性的目的,对涡扇发动机主轴承试验器考核的发展具有重要的工程指导意义。
英文摘要:
      A bearing rig test method considering both conventional and extreme operational conditions was proposed for rig test assess? ment of turbofan engine main bearings,from the perspective of verifying the bearing quality and their adaptability to engine operational conditions and guided by GJB 7268-2011. Based on traditional tests,the conventional test program was refined by adding more test items such as short-duration multiple oil interruption tests,over-temperature test,over-speed test,gyroscopic moment test,and misalignment test. The key points and examples of each test program were provided. The method was implemented in developing a turbofan engine main bearing,and the results show that the bearings under test passed all items of the verification test,and the engine assembled with the bear? ings passed the endurance test. The method can basically cover the operational conditions boundary of the turbofan engine,achieving the purpose of assessing the operational condition adaptability of the main bearing before the whole engine assembly,It has important engineer? ing guidance significance for the development of rig test method for main bearing assessment of turbofan engines.
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