Study On The Performances Of Blast And Damage Of Liquid-Solid Composite Fuel-Air-Explosive

The performances of Liquid-Solid Composite Fuel (CF), as a type of Single Event FAE, were studied in this thesis.The calculation of detonation parameters on four kinds of CF was carried out on the basis of BKW equation of state. The detonation velocity of CF was measured by electric probe method. The comparison of calculation with experimental data showed that BKW equation of state can be used to calculate detonation parameters of CF accurately, because the calculation was very close to the result of experiment. The performance of CF detonation was analyzed. The detonation pressure is about 15GPa, the detonation velocity is about 6000m/s, these data were higher than those of DE-FAE, and lower than those of HE, this result indcated that CF is a new kind of blasting agent their performances are between those of HE and DE-FAE. The result also indcated that CF detonation is able to produce fragments and damage hard objects owing to the high detonation pressure.The power and characteristic of blast field of CF were studied. Two new concepts, the total TNT equivalent and the effective TNT equivalent, were proposed, and the formula for calculating the power of naked CF was deduced, according to the characteristics of the blast of CF warheads. Experimental data indicated that the volumetric power of CF is higher than that of DE-FAE, because the loading density of CF is higher than that of DE-FAE, and the comprehensive power of CF is higher than that of DE-FAE. Two new concepts, the mass power and the volumetric power, were presented in this thesis.The direct experimental evidence of the second explosion and after-burning was obtained for the first time. The performance of the second explosion was analyzed, and the photos are presented. The amount of air/oxygen consumed from environment by after-burning (secondary explosion) was then calculated, which is about 50g of air for per 100g of CF, this is significant.The performances of fire-ball and detonation of CF and HE were studied, using the Mikronscan 7200V Thermal Imager. The results indicated that the temperature,volume,lasting time and the quantity of thermal radiation of CF fire-ball are much higher than those of HE. The parameters of fire-ball of explosive will changed when the shell and blast condition are changed, and can not be predicted according to the explosive mass only. The heat effect of CF was strong, but the quantity of thermal radiation was weak. The rapid diffussion of high-temperature product and convection are the major factors of thermal damage of CF blast. This conclusion can be applied to the fireball of normal HE blast. The new concept, q_max, were proposed, and its purpose and calculation method were introduced. The method to estimate the thermal damage power of CF was prsented, the effective distance of thermal damage on the target owing to fire-ball of CF and the mass one-third power of explosive is proportional to. The result was reliable according to the experiment.The inner compatibility of CF was determined by C80 microcalorimetry method and temperature scan method. The performances of accelerating thermal decomposition was analyzed, and the influenc of the atmosphere was ascertained in the thermal decomposition prossess. The influencs of the mass of the sample and the rate of the temperature variation on the thermal decomposition performances of CF were studied.The storage performance of CF was studied in nature conditions. The methods for estimating the storage performance of CF was established, according to both the performance of CF and the failure mode of EED, including of static detonation test, component analysis and thermal performance analysis. All the experimental data indicated that the performance of stored CF was eligible. This work is still in progress at present.