

Image credit: North American Rockwell
File source: NASA NTRS


Image credit: North American Rockwell
File source: NASA NTRS

Image credit: NASA
Image source: Massachusetts Institute of Technology

Just to illustrate just how utterly massive the R-134B would have been, take a look at this illustration from a report written by Jack Swigert for The Society of Experimental Test Pilots:
Image credit: NASA
Image source: Mike Acs