A.R Roudbari - Department of Aerospace, Shahid Sattari University, Tehran, Iran
M Norouzi Bakhsh - Department of Aerospace, Shahid Sattari University, Tehran, Iran

Analysis of combustion products and combustion condition such as oxidizer to fuel ratio,combustion chamber pressure and environmentally consideration ,thrust profile are one of theimportant section off accept or reject of the fuel. One of the pollutant gases are Carbonemonoxide, so we want to find a reliable relation for analysis mole fraction of Carbonemonoxide in combustion of liquid butane and liquid oxygen by special software in highpressure.