Losing Airspeed In Turn
So I was asked by an instructor about losing airspeed in a turn. I understand why we lose airspeed, because by increasing AoA we increase induced drag.
Normally this would create an adverse situation as reducing airspeed would require increased AoA to maintain height. Further increasing AoA causing further decrease in speed until flight cannot be maintained.
In medium turns the speed reduces and settles at speed only a few knots lower. Why does the speed settle? Why do we not have to keep increasing AoA?
Can't find the answer anywhere in books or internet, all they say is increase is so small speed only slightly reduces. No explanation why it stops going down.
Any help would be appreciated!