In order to further improve the gel propellant atomization and combustion efficiency,and to promote the wide application of gel engines,several new monopeptide and amino acid gel formulations are proposed.The advantages and disadvantages of monopeptide and amino acid gel formulations are analyzed by scanning electron microscopy,and N-acetyl-L-isoleucyl decylamine(AC-C10)and hydrogenated castor oil is gelling agents,which are added to JP-3 aviation kerosene,dispersed using a high-speed disperser,and part of the samples are re-dispersed by heating in a water bath to prepare a series of temperature-sensitive gel propellants.A rheometer is used to measure the rheological properties of the prepared gel propellants at different temperatures,and a segmented temperature-dependent constitutive equation is constructed for characterization.The results show that the viscosity of the temperature-sensitive gel propellants decreases gradually with the increase of temperature,and the phase change occurs after about 75℃,with good temperature thixotropy and low recondensation.The segmented temperature-dependent constitutive equations constructed in this paper have less error in characterizing the prepared new gels,and a good fitting is achieved.
关键词
凝胶推进剂/温度触变/本构方程/流变特性
Key words
gel propellant/temperature thixotropy/constitutive equation/rheological property
维普
万方数据