Nitrogen (N2) Gas Cooling For a Closed Cycle Nuclear Heated Gas Turbine

The exact date of my revelation that helium was not the ideal working fluid for closed cycle gas turbines is lost in a pile of papers that may or may not include an old calendar or two. It is not really important, except for the fact that it happened after I had left active duty in the Navy, moved my family to Tarpon Springs, Florida and established Adams Atomic Engines, Inc. as a Florida