Additive composition for polyether gas generator propellant and gas generator propellant

The invention relates to an additive composition for polyether gas generator propellant and a gas generator propellant, which belong to the technical field of solid propellants. The additive composition for polyether gas generator propellant provided by the invention consists of 30 to 70 percent by weight of cobalt oxide Co3O4 and 30 to 70 percent by weight of calcium fluoride CaF2. By using the cobalt oxide and the calcium fluoride in combination, the additive composition provided by the invention can generate a good synergistic catalytic combustion effect, consequently, the problems of polyether gas generator propellant, such as flameout at the stage of ignition and boosting and unstable combustion process, are effectively solved, and the additive composition can ensure that the combustion curve of the polyether gas generator propellant is smooth. By adding 0.5 to 1.2 percent by weight of additive composition into the low-combustion temperature polyether gas generator propellant, the invention can effective