RP-3航空煤油热辐射物性参数的透射法测量

Transmittance Method Measurement of Thermal Radiative Physical Parameters of Aviation Kerosene RP-3

建立了填充半透明液体光学腔光谱透射比的正问题计算模型,提出了一种基于填充液体光学腔的透射光谱反演其液态介质光学常数的IDTM模型,通过测量填充水光学腔的透射光谱并反演水的光学常数进行了模型验证.采用Bruke V70傅里叶红外光谱仪实验测量了填充RP-3航空煤油光学腔在波长2~15μm的透射光谱,基于新模型反演得到RP-3航空煤油光学常数,进而计算得到了其部分波段区域热辐射物性参数.研究结果表明：1）IDTM模型反演液体光学常数精度同MCDTM模型基本一致,且明显高于SODTM模型和SDTM模型.2）RP-3航空煤油在波长2~15μm范围透光性能较差,其中存在2.4μm、3.4μm、6.9μm、7.3μm和13.8μm等5个强吸收区域.3）RP-3航空煤油的光学常数和热辐射物性参数光谱选择性很强,在不同波段其值差距较大.

The spectral transmittance radio calculation model of optical constants filled semitransparent liquid was developed.A novel inversion model of optical constants of liquid medium was developed based on spectral transmittance radio inversion calculation of optical cell filled with liquid fuel,which was validated and analyzed by measuring the optical constants of water.The measurements of transmittance spectrogram of optical cell filled with diesel fuel in the infrared wavelength 2~15 urn at normal incidence were investigated by Bruke V70 FTIR spectrometer.The optical constants and thermal radiative physical parameters of aviation kerosene RP-3 were achieved.The results show that,1） The optical constants calculation precision of the novel method（IDTM model） is similar with MCDTM model,which is higher than SODTM model and SDTM model.2）The transmittance capability of aviation kerosene RP-3 in the infrared wavelength 2~15 μm are weak,and there exist five absorption peaks,which are respectively 2.4[Am.3.4 μm,6.2 μm,7.3 μm and 13.8 μm.3） The spectral selectivity of optical constants and thermal radiative physical parameters of aviation kerosene RP-3 are stronger,whose values are urgently varied with different wavelengths.