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dsca7538.jpg

View of the lines leading to the engine's heat exchanger.

Picture 1 of 3.

From right to left, the lines are

  • Helium supply line
  • LOX supply line
  • Helium return line
  • GOX return line

Note that each supply line is of a smaller diameter than the corresponding return line. Also note that each pair of supply/return lines are joined by a bypass hose.

Under the fitting terminating each line is the actual entrance to the heat exchanger coils.

 
Heat exchanger lines on F-1 Engine (Building 4200) at Marshall Space Flight Center
Time picture taken Tue Sep 16 12:30:10 2014
Location picture taken Building 4200
Marshall Space Flight Center
Huntsville, AL
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