Originally Posted by Max_501
Sure, page 67 of The Skier's Edge
That seems like a reasonable explanation to me.
Being launched OUT of a turn is not the same thing as being launched UP and OFF the snow.
Remember "reaction is force", is really the "normal force"...it can only push on you, as hard as you push on it...hence it cannot over come gravity.
What he is referring to here, is that if you do not flex, thus reducing the amount of force you are exhbiting on the snow, and thus the amount of force the snow is exhibiting on you, you will very likely get pulled into the back seat, and "launched" out of the turn.
Air time happens only after the COM passes over the feet and begins to move downhill, the resulting "steeping" of the slope is akin to the ground falling away...since the ground is falling away, the skis become light, if you do not extend enough, the skis may not even stay on the snow.
So I ask again...what makes these skis fly off the snow in the transition in your technique? And you still have not addressed this issue below:
"Releasing forces that coincide with the virtual bump is like letting your CM carry on in a smooth straight level line as your skis go over a bump".
This seems at odds with what you wrote earlier that "releasing forces" causes this virtual bump....but above it seems you are saying that is smooths it out.
And FWIW your understanding/misquote of RL seems to suggest you now think the answer lies in middle of the above two answers....