IHL
That's pretty much what I've been taught, and read in the textbooks. I think my question comes down to how quickly the transition process occurs.
What you've described seems a fairly progressive introduction of transverse flow to the disk, reducing the inflow angle and therefore increasing the efficency of the system. And the smooth form of the power required curves would seem to reflect this.
So why then does it seem like a
sudden transition ?
Flingwing
That does seems the most likely explanation. I've certainly noticed that the drama has reduced as my rotary handling skills have improved
