Effect factor of laminar burning characteristics of RP-3 kerosene

In order to gain the main effect factors of burning characteristics of RP-3 kerosene, the flame propagation characteristics of RP-3 kerosene over the initial temperature range of 390-450K, the initial pressure range of 0.1-0.7MPa, and the equivalence ratio range of 0.6-1.5 were measured in the constant volume combustion bomb. Furthermore, the main effect factors of the flame stability and laminar burning velocity of RP-3 kerosene were investigated. The results showed that increasing the initial pressure or decreasing the initial temperature led to a decrease in the unstretched flame propagation velocity and the laminar burning velocity, and an increase in the maximum burning pressure of RP-3 kerosene. With the increase of equivalence ratio, the unstretched flame propagation velocity, the laminar burning velocity and the maximum burning pressure increased initially and then decreased gradually. The highest unstretched flame propagation velocity and the laminar burning velocity were measured when the equivalence ratio was 1.2 and the maximum burning pressure was measured when the equivalence ratio was 1.0. Furthermore, increasing the equivalence ratio or the initial pressure decreased the Markstein length and the stability of the flame front. However, the effect of the initial temperature on the Markstein length was uncertain. © 2018, Editorial Department of Journal of Aerospace Power. All right reserved.