dsc66790.jpg

Detail of injector no. 1 and its igniter, which have also been sectioned.

Referring to the diagram on my info page, it appears that the liquid oxygen (LOX) enters through the small-diameter tubing at far left. It's harder to tell from the diagram, but by process of elimination, the liquid hydrogen must enter through the large-diameter tubing which forms the outer portion of the injector (the LH₂ entering from the bottom).

A picture of where the propellants are injected into the combustion chamber (from injector no. 2) appears in dsc66784.jpg.