Originally Posted by
Lonewolf_50
Define what you mean by 'relatively easy' about UH-60 Tail boom replacement.
Easier than designing a stealth/low observable utility helicopter from scratch, or massively modifying a UH-60 to represent some of the artist illustrations in this thread.
Being a design engineer, my assumption is that the process would be along the lines of cost/benefit analysis of varying degrees of modification.
The technical complexity of altering the forward fuselage structure around the cabin, engines, and transmission for low observability to any great degree would be unappealing. Whereas, treating the rotor heads to some radar absorbent hats, and maybe putting radar absorbent mats over the cabin windows on the other hand seems an easy win. Design and rapid prototype/manufacture of a tailboom specifically with low observability in mind sits somewhere between the two.