翟政,张帅,周伟.模拟自然环境的航空发动机低温起动试验研究[J].航空发动机,2021,47(S1):115-119
模拟自然环境的航空发动机低温起动试验研究
Study on Aeroengine Low Temperature Starting Test for Simulating Natural Environment
  
DOI:
中文关键词:  低温起动  试验舱  风车冷浸  冷运转  涡扇发动机
英文关键词:low temperature starting  test chamber  typhoon car quenching  cold operation  turbofan engine
基金项目:航空动力基础研究项目资助
作者单位E-mail
翟政,张帅,周伟 中国航发沈阳发动机研究所沈阳110015 zhaizheng55@126.com 
摘要点击次数: 225
全文下载次数: 230
中文摘要:
      为了验证航空发动机在低温环境温度下的起动性能,基于试验舱模拟自然环境进行了某型涡扇发动机低温起动试验, 介绍了试验设备及试验准备情况,选取环境条件为-40 ℃的降温历程曲线作为研究对象,该条件下的冷浸区别于高空台风车冷 浸,能够使发动机内、外部关键部位均达到目标温度。试验结果表明:舱内冷浸3 h后发动机外部附件和内部转动部件已“冷透”。 因低温环境下主燃油泵调节器内部零组件工作特性变化而导致的起动过程供油时间提前和供油量增多,是影响该型发动机低温 起动特性的主要因素;对调节系统预热(冷运转)可明显提高低温环境下的起动成功率。该方法可在外场推广使用。
英文摘要:
      In order to verify the starting performance of aeroengine at low temperature,the low temperature starting test of a turbofan engine was carried out based on the simulation of natural environment in the test chamber. The test equipment and test preparation were in? troduced and the cooling process curve of -40 ℃ was selected as the research subject. The quenching under this condition was different from high typhoon car quenching,which enabled the key parts of the engine to reach the target temperature. The test results show that after 3 hours of quenching in the chamber,the external accessories and internal rotating parts of engine had been "cold thoroughly" . The main factors affecting the low temperature starting characteristics of engine were the advance of fuel supply time and the increase of fuel supply due to the change of the working characteristics of the internal components of the main fuel pump regulator under low temperature environ? ment. Preconditioning system(cold operation)can significantly improve the starting success rate at low temperature environment and the method can be used in the outer field.
查看全文  查看/发表评论  下载PDF阅读器