points on pressure time trace were picked for a 8.40 s burn time. This unfiltered pressure time curve was used for calculations. The motor had a length of 1.148 m and initial port diameter was 11.4 cm. The oxidizer mass flow rate, O/F ratio, combustion efficiency, combustion chamber pressure and throat area were 4.43 kg/s, 2.69, 82%, 21.6 bar and 7.11 cm, respectively. Based on the O/F ratio and the oxidizer mass flow rate the fuel consumed during the 8.40 s burn time was calculated as 13.83 kg.