Abstract: Fourier transform IR (FTIR) spectroscopy for making non- intrusive measurements of gas turbine exhaust gases and laser induced incandescence for measuring soot content are being evaluated in EU Brite EuRam project AEROJET. Soot concentrations in modern aero-engine exhausts are very low with mean particle sizes $LS 100 nm. The standard extractive filter paper soot measurement gives results expressed in terms of SAE smoke number, typically $LS 10 SAE for modern engines. !13
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机译：摘要：在欧盟Brite EuRam项目AEROJET中，正在对用于进行燃气轮机废气的非侵入式测量以及用于测量烟灰含量的激光诱导白炽光的傅里叶变换红外（FTIR）光谱进行评估。现代航空发动机排气中的烟尘浓度非常低，平均粒径约为100纳米。标准的抽滤纸烟灰测量结果以SAE烟尘度表示，对于现代发动机，通常为$ LS 10 SAE。 ！13
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