Hot Plasma Under The Action Of Gunpowder, Thermal And Chemical Properties Of The Preliminary Study

The electrothermal-chemical gun is the equipment that it discharges to medium by highpower impulse and adds electrical energy to medium by the hot plasma form, enhancingand controlling ignition and combustion to improve the ballistic properties. It uses theelectrical energy and chemical energy based on the technology of general artillery togreatly improve the artillery properties and suit the damand of the war in the future. Justunder this condition, the technology of ETC appears, and it mostly uses the chemicalenergy as the ballistic energy to enhance the kinetic energy.BLAKE is a general thermodynamics code, and it uses a truncated virial equation ofstate to embodie a correction for non-ideal gas effects appropriate to this application. It isintended primarily for making calculations on propellant gases under gun chamberconditions on the combustion gases formed by military propellants. In this paper, bystudying and analyzing BLAKE Code, use the theoretical mode to deal with the plasma,equilibrium constant to analyse the constituents at balance, and compute the parameters,then modify the equation of state:(1). Generally, B and C are the functions of temperature. When the loading density isabove 0.2 g/cm~3, it's necessary to modify C. And now the loading density is 0.2 g/cm~3, wepresume C be independent of temperature.(2). In this paper, we modify the second and third Virial coefficient using the second andthird Virial coefficient of the general gas-fired.Use the aforementioned to erect a method to calculate thermochemical values for gasesproduced by plasma/propellant system, and then compute two powders' properties,analyse the results and make the conclusion at last.When the energy input is very small, the results are the same as the general powder. Asignificant concentration of ions may be formed in the gas along with the accretion of theenergy input. Now we must take it into account, improve equilibrium constant using aparameterφ_i.In this paper, we calculate at the low, middle and high energy input, and the results arethe same as the external results. But if the energy holds on increasing and the temperatureand the pressure are big enough, is the way appropriate? This problem needs worked outnext.