>>11185727>yellowLiquid methane (intake and after pump)
>orangeMethane returning from regenerative cooling loop
>redFuel-rich gasses from methane preburner
>pale yellowMethane high-pressure vapor line up to autogenous pressurization system
>light blueLiquid oxygen
>purple-blueOxygen-rich gasses from in-line oxygen pump and preburner assembly
>greenish-blueHigh pressure oxygen vapor line up to autogenous pressurization system
The yellow line from the pump enters the regenerative cooling loop near the nozzle throat, and flows both down along the nozzle bell and up towards the combustion chamber. It exits the cooling circuit via the two orange manifolds that join up and flow back to the preburner side of the fuel turbopump.
Fuel-rich gas is routed both to the main injector plate and to an annular injection ring near the bottom of the combustion chamber to introduce film cooling near the nozzle throat.
A small orange pipe feeds fuel to the oxygen turbopump after is has been used to cool the nozzle assembly.
A small light blue pipe feeds oxygen to the fuel turbopump directly from the oxygen pump.
A bypass line for liquid oxygen and liquid methane run up from the oxygen-to-fuel-turbopump valve and directly from the fuel pump, respectively. These appear to terminate beside the turbine of the oxygen pump; possibly feeding main combustion chamber ignition system? A series of grey lines are connected from several points across the engine, lines to carry pressure to different sensors and bleed valves?
