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Leaning into the thrust chamber and shooting blind at burner cups.

Picture 1 of 6.

There aren't a lot of photos out there of the interior of of burner cups, so I didn't have the heart to cut any more of pictures.

At the center of each burner cup is the LOX injector (the gold nozzle with the hexagon base).

Each burner cup has three rows of fuel injector nozzles (a row of 12 at the forward end and two offset rows of 16 each toward the aft end of the burner cup).

Also note the metal plate at center, corresponding to the low pressure fuel inlet on the exterior of the combustion chamber.