Study On Stability Of Solid-liquid Mixed State FAE Fuel

The FAE plays a special role in the current conventional weapon equipment, and the fuel of FAE is the core of it. After half a century of development, the FAE fuel has been transformed from liquid fuel to solid-liquid mixed state.The physical stability of the solid-liquid mixed-state FAE fuel will change to a considerable extent, and in result, the power performance of the cloud explosive weapon will be affected during the period of long-term storage, transportation or emission. The research of the physical stability of the solid-liquid mixed-stated FAE fuel is of great significance for the FAE.In this thesis, the Vibration method is adopted to study the influence of the composition and proportion of the liquid-solid mixed state fuel on the physical stability of the pharmacy. 8 kinds of formulations were chose for volatile ethers, alkane reagent as their liquid components, and 4 kinds of mixed reagents ratios were utilized(1:2.5, 1:3, 1:3.5 and 1:4) under 4 kinds vibration condition(5Hz, 10 Hz, 15 Hz and 20Hz). The experimental results are presented as follow: The liquid composition of the powder-epoxy-propane formula will precipitate out with the critical range ratios of 1:3.5 to 1:3 under the vibration frequency of 20Hz; When the vibration ratio is 1:3.5, the amount of the precipitated liquid increased with the increase of vibration frequency, in addition, the maximum precipitation volume was 4.5 mL; Under the conditions of 20 Hz vibration frequency, the volume fraction of aluminum powder is 22%,With the increase of carbon chain, the more liquid precipitation.There are not liquid precipitations like diethyl-ether, n-pentane, n-hexane, n-heptane, but there are liquid precipitations like epoxy-propane, cyclohexane, n-octane and n-decane.Numerical simulations were performed to study the formulas of eight different sizes of aluminum particles and four different ratios of solid to liquid by Fluent Fluid Mechanics Software and Multiphase Flow Mixture Model. Combined with the data statistics software, the parameter relation formula of the density gradient and particle size of the agent was obtained, and the relation curve of the density gradient of the agent and the volume fraction of aluminum powder was fitted.Comparison of 6 kinds of formulations of the mixed reagent vibration test and numerical simulation results, in the same vibration conditions(10Hz), three ratio(1:2, 1:3, 1: 3.5) mix of chemicals were selected, the results show that the error will be smaller with the decrease of the aluminum content. Simulation results are in good consistence when aluminum content is lower than 25%, and simulation method can be used for vibration test simulation.