著者

新井 義夫 上谷 長俊

出版者

社団法人日本材料学会

雑誌

材料 (ISSN:05145163)

巻号頁・発行日

vol.15, no.152, pp.291-293, 1966-05-15

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The colored smoke trails from jet planes are generated by volatilizing colored smoke oils with hot exhaust gases from the jet engines. The colored smoke oil is a slurry, which is a mixture of selected dye with petroleum base oil. The colored smoke oil is a non-Newtonian fluid subject to the following power law. S=η' D^n where S is the shearing stress, D the rate of shear, η' the consistency index, and n the flow-behavior index. The following experimental equations were derived at low rates of shear. η'=η_0 exp (kC) (k>0) n=exp (-k'C) (k'>0) where η_0 is the viscosity of the base oil, C is the concentration of the dye, and k and k' are the constants to the kinds of dyes.