Speaking of scientific bullsh1t WRAITH, ideal circular motion is a constant energy motion. The centripetal force acting on the body acts radially towards the centre of the circle but there is no change of displacement in this direction and no radial velocity. Hence, no energy is expended by the radial force. The tangential speed is constant hence constant energy.
Hilife, I think what Hipper was trying to say, is that with an angle of bank, the vertical component of lift decreases. To maintain level flight, the total lift must be increased, by increasing alpha, to maintain a vertical component of lift equal and opposite to weight. The increase of lift and alpha, increases induced drag, and if thrust is not increased to match drag, airspeed will settle at a reduced value. I think this is the one point that we have all agreed on since post 2.
OUT.