From the Chief Instructor - Robinson Helicopters.
“Settling With Power”
In the U.S., there seems to be a great deal of confusion on whether the vortex ring state should be properly or improperly referred to as “settling with power.” The controversy stems from a condition completely different from the vortex ring state, in which engine power required exceeds engine power available.
Over the years, various aviation organizations have used conflicting terminology in discussing these very different conditions.
In the 1950s, the U.S. Navy referred to the vortex ring state as “power settling” and used the term “settling with power” for the power-available-vs.-power-required situation. Not wanting to let the Navy set the standard, the U.S. Army reversed the terminology in the 1960s. Army pilots in Vietnam used the term “settling with power” to refer to the vortex ring state and “power settling” when they were trying to get out of a tight landing zone with too many troops onboard.
The FAA uses “settling with power” in its discussion of vortex ring state in both the Rotorcraft Flying Handbook and the Practical Test Standards (probably because there are more former Army pilots in the FAA than former Navy pilots).
Outside the U.S., the picture is much clearer; for the most part, the term used is “vortex ring state.”
I say, let’s call it what it is—the “vortex ring state,” not some vague term that has different meanings to different pilots.—Tim Tucker
Unfortunately he then spoils it all by supporting the Vuichard technique.