Abstract
The laser propulsion process of laser supported detonation wave with gas-liquid two phase propellant has been analyzed. The ideal power cycle model of gas-liquid two phase propellant laser propulsion has been established to analyze the energy conversion efficiency using thermal dynamic method. It's founded that the compression ratio and the pressure ratio are the main factors to improve the efficiency of energy conversion and the conversion efficiency can be enhanced through improving the two factors. The compression ratio is related to the inlet Mach number and the pressure ratio is associated with the power density of the laser and the characteristic of the propellant. The efficiency can be improved through increasing the speed of the craft, improving the power density of laser and perfecting propellant. Through mixed with water, the threshold of air breakdown will decrease, the absorbing efficiency will increase and the pressure ratio will increase, thus the efficiency of energy conversion will be enhanced. The study of gas-liquid two phase propellant is of great significance to the later study of laser propulsion.
