Patent ID: 8147628

Claim:
A method of making a cryogenic solid monergole propellant out of a heterogeneous liquid-solid propellant, from reactants at least one of which is a fuel and an oxidizer which contains a phase that is liquid or gaseous at standard temperature, which comprises the steps of: (a) incorporating at least one liquid or gaseous phase reactant in the form of an oxidizer in a solid phase structure, open pore plastic foam fuel, having hollow spaces which are connected to each other; and (b) transforming the liquid or gaseous phase oxidizer incorporated in the solid phase structure, open pore plastic foam fuel, having hollow spaces connected to each other by freezing the liquid or gaseous phase into a stable cryogenic solid phase below standard temperature within the hollow spaces of the solid phase structure, open pore plastic foam fuel, inside a combustion chamber to obtain a rocket propellant with improved storability while avoiding the need for liquid management and simultaneously eliminating need for permanent ignition thereof.