航空发动机尾气的FTIR被动遥感  

Remote Passive Sensing of Aeroengine Exhausts Using FTIR System

作　　者：夏卿[1] 左洪福[1] 李绍成[1] 文振华[1] 李耀华[1] 

机构地区：[1]南京航空航天大学民航学院,江苏南京210016

出　　处：《光谱学与光谱分析》2009年第3期616-619,共4页Spectroscopy and Spectral Analysis

基　　金：中国高技术研究发展计划项目"863"(2006AA04Z427)资助

摘　　要：针对航空发动机排放尾气传统的插入式采样分析技术难度大、设备结构复杂、测量成本高、具有一定危险等缺点,将快速、机动、低成本的非插入式测量方法——被动式傅里叶变换红外光谱(FTIR)遥感技术引入到航空发动机尾气监测当中。讨论了FTIR被动遥感的原理,介绍了FTIR光谱仪系统的仪器响应函数、红外辐射光谱能量分布以及气体浓度的算法模型。利用TENSOR27型FTIR光谱仪遥测某航空发动机排放尾气,获得一系列不同推力下红外发射单通道光谱图。通过对红外发射光谱的定性定量分析,计算出四种不同推力下CO2,CO和NO的气体组分浓度。利用遥感FTIR方法监测航空发动机排放气体组分浓度的研究在国内航空领域尚处于探索阶段,试验中航空发动机的排放发射光谱及计算结果是首次公开发表。实验同时也表明该技术在航空发动机尾气监测方面具有极大的应用前景。The traditional method of measuring the aeroangine exhausts is intrusive gas sampling analysis techniques. The disadvantages of the techniques include complex system, difficult operation, high costs and potential danger because of back-pressure effects. The non-intrusive methods have the potential to overcome these problems. So the remote FTIR passive sensing is applied to monitor aeroengine exhausts and determine the concentration of the exhausts gases of aeroengines. The principle of FTIR remote passive sensing is discussed. The model algorithm for the calibration of FTIR system, the radiance power distribution and gas concentration are introduced. TENSOR27 FTIR-system was used to measure the spectra of infrared radiation emitted by the hot gases of exhausts in a test rig. The emission spectra of exhausts were obtained under different thrusts. By analyzing the spectra, the concentrations of CO2, CO and NO concentration were calculated under 4 thrusts. Researches on the determination of concentration of the exhausts gases of aeroengines by using the remote FTIR sensing are still in early stage in the domestic aeronautics field. The results of the spectra and concentration in the aeroengine test are published for the first time It is shown that the remote FTIR passive sensing techniques have a great future in monitoring the hot gas of the aeroengines exhausts.

关 键 词：航空发动机 尾气 FTIR 被动遥感 发射光谱 

分 类 号：O433.1[机械工程—光学工程]