The Main Combustion Chamber (MCC) contains the combustion process, accelerates the gas flow to throat sonic velocity, and initiates the gas expansion process through its diverging section.
The chamber includes a liner, jacket, throat ring, coolant inlet manifold, and coolant outlet manifold.
The liner outer surface has 430 vertical milled slots that are closed out by electrodeposited nickel. The jacket halves are placed around the liner and welded. The coolant manifolds are welded to the jacket and the liner.
The throat ring is welded to the jacket to add strength to the chamber. This creates a regeneratively cooled chamber in which the cooling fuel makes a single up-pass through the milled slots of the liner.
