Forget the loops...go back to original simple question: does turning DW cause any effect re altitude?
Trim/power for straight and level flying into a significant wind. Hands off. Quickly initiate a 180 turn/let the model turn itself. Then make no control inputs, no compensations. What happens? After the 180 is complete and leveled, the model keeps losing altitude until it has fully caught up and exceeded that steady sea of air to return to the original AS. The amount of time that takes obviously proportional to the height loss....and, yeah, going pretty damn fast, now, relative to the Tx....and definitely lower in the sky.
Greater the WL/wind/the closer the AS is to the wind speed, the greater the effect. A powered feather be less noticeable; only a model w/ no mass would truly show no DW altitude loss.
Myth of the myth exploded. Period. But I know it won't be for some.
(Fizzzzz *pop*) Sound of a dud.
Sorry Ray, drop the 'quickly' from the statement and it will/won't work? It should work whether controls are moved quickly or not in your example, which it won't. By moving the controls 'quickly', you're inducing more drag, slowing the plane rapidly. Define 'significantly' and 'quickly'. The myth abides.
I still have an old VHS Bill Evans sent me of him and his crazed pals flying one of his overpowered Simitar flying wings in the desert on an extremely windy day, I'd say 40 mph minimum. At one point they bring the airplane into a hover about 10 feet from the camera. Then they 'quickly' turn down-wind - without raising power or pitching up - and come back in a huuuuge oval. As soon as the plane starts to bank, it starts to get blown downwind. Moving with the ambient air. They had to use full power to get back to the starting point. At the end, they land out of a hover and Bill has to jump on the plane to keep it on the ground.