Regeneratively cooled porous media jacket

A rocket engine cooling jacket comprising:

• a fluid-impermeable inner wall forming a cooling chamber and a combustion chamber;
• a fluid-impermeable outer wall;
• a porous media matrix between the inner wall and the outer wall, wherein the inner wall, porous media matrix, and outer wall are formed from stacked and aligned metal layers, and wherein the porous media matrix includes an inlet configured to receive a coolant fluid at one end of the cooling chamber and an outlet configured to expel the coolant fluid at the other end of the cooling chamber into the combustion chamber.

A method of cooling a rocket engine comprising passing a fluid propellant coolant from a propellant tank through an inlet port, through an open cell metal foam porous media matrix that is disposed between an inner wall of the rocket engine that is fluid impermeable and an outer wall of the rocket engine that is fluid impermeable;

• and through an outlet port into the combustion chamber of the rocket engine.

A method of cooling a rocket engine comprising passing a fluid propellant coolant from a propellant tank through an inlet port, through a microfluidic porous media matrix that is disposed between an inner wall of the rocket engine that is fluid impermeable and an outer wall of the rocket engine that is fluid impermeable, wherein the inner wall, porous media matrix, and outer wall are formed from stacked and aligned metal layers;

• and through an outlet port into the combustion chamber of the rocket engine.