One of the most crucial sciences in automobile, space, and aerial industrial is related to combustion and reaction science. The internal combustion engine of automobile burn gasoline (C8H18) and heat released from this combustion caused the temperature of reactant reached about 2138 and based on ideal gas approximation the volume of reactant reach about seven times of primary volume (constant pressure) or pressure reaches about seven times (constant volume). Increasing pressure and volume of gases leads to piston movement. The philosophy of combustion in jet engine combustion chamber is a bit different. The main target from burning of JP4 (Keresan-gasoline blend) is increasing in volume of product and in constant area of jet tube predicting velocity should be increased. Although some combustion energy derived to rotate the turbine. The thrust of jet is directly related to velocity (thrust is equal to mass flow rate multiplied by velocity). Combustion is science of reaction of hydrocarbons the concentration of product and heat released