Question

Consider three oxidizer-fuel combinations for use in liquid propellant rocket engines: O2 - N2H4, O2 – RP1 and O2 - H2. (a) For each propellant combination, calculate the stoichiometric mixture ratio ($r_{stoic}$). (b) Assuming complete combustion, calculate the temperature of the combustion products over a range of mixture ratios as follows: 0.8 to 1.6 for O2-N2H4, 1.5 to 3.3 for O2-RP1, and 2 to 8 for O2-H2. The reactants enter the chamber at 68 atm and 298.15 K. The enthalpy of formation of CH2 is 386.81 kJ/mol. The values of the enthalpy of formation for the other species are found in Table 2.1 (pages 42 and 43) of the text. Tabulate the results. $\gamma_{mon} = 1.67$, $\gamma_{di} = 1.29$ and $\gamma_{tri} = 1.17.$

          Consider three oxidizer-fuel combinations for use in liquid propellant rocket engines: O2 - N2H4, O2 – RP1 and O2 - H2.
(a) For each propellant combination, calculate the stoichiometric mixture ratio ($r_{stoic}$).
(b) Assuming complete combustion, calculate the temperature of the combustion products over a range of mixture ratios as follows: 0.8 to 1.6 for O2-N2H4, 1.5 to 3.3 for O2-RP1, and 2 to 8 for O2-H2. The reactants enter the chamber at 68 atm and 298.15 K. The enthalpy of formation of CH2 is 386.81 kJ/mol. The values of the enthalpy of formation for the other species are found in Table 2.1 (pages 42 and 43) of the text. Tabulate the results. $\gamma_{mon} = 1.67$, $\gamma_{di} = 1.29$ and $\gamma_{tri} = 1.17.$

Consider three oxidizer-fuel combinations for use in liquid propellant rocket engines: O2 - N2H4, O2 – RP1 and O2 - H2.
(a) For each propellant combination, calculate the stoichiometric mixture ratio (rstoic).
(b) Assuming complete combustion, calculate the temperature of the combustion products over a range of mixture ratios as follows: 0.8 to 1.6 for O2-N2H4, 1.5 to 3.3 for O2-RP1, and 2 to 8 for O2-H2. The reactants enter the chamber at 68 atm and 298.15 K. The enthalpy of formation of CH2 is 386.81 kJ/mol. The values of the enthalpy of formation for the other species are found in Table 2.1 (pages 42 and 43) of the text. Tabulate the results. γmon = 1.67, γdi = 1.29 and γtri = 1.17.

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