The combustion characteristics such as flame propagation characteristic

Markstein length and laminar burning velocity of methane/RP-3 mixture were obtained in a constant volume chamber at initial temperature of 450K

initial pressures of 0.1-0.3MPa

equivalence ratios of 0.7-1.5 and methane mole fraction of 0-0.8

and the effects of methane mole fraction and initial pressure on combustion stability and laminar burning velocity of methane/RP-3 mixture were analyzed. The results showed that at the equivalence ratio of 1.3

with the increase of methane mole fraction

the combustion of methane/RP-3 kerosene mixture became stable. The effect of initial pressure on combustion stability was greater. With the increase of initial pressure

the combustion stability of the mixture became worse. Markstein length of the mixture decreased with the increase of equivalence ratio. With the increase of methane mole fraction

the decrease tendency of Markstein length became slow

and with the increase of initial pressure

this decrease tendency became slow significantly. The laminar burning velocity of the mixture increased first and then decreased with the increase of equivalence ratio. At methane mole fraction of 0

0.4 and 0.6

with the increase of methane mole fraction

the laminar burning velocity of the mixture increased gradually. At initial pressure of 0.1

0.2

0.3MPa

with the increase of initial pressure

the laminar burning velocity decreased evidently. With the increase of methane mole fraction and initial pressure

the peak value of laminar burning velocity of the mixture had the trend to move towards the fuel-rich zone.