Mossy 757 wrote: ↑
Mon Dec 11, 2017 5:27 pm
Yaw is not what turns a hydrofoil, rolling in the direction of turn redirects the upwards lift vector towards the inside of the turn and induces the change of direction.
Just like stepping on a rudder pedal in a plane doesn't change direction, only points the nose in a new direction. In a plane when you want to turn, you roll the plane so that the lift vector propels you in the new direction and use yaw to keep your altitude through the turn.
Not to just find a reason to disagree, but like literally everything in this thread is technically wrong from a physics perspective. It's the lift vector that creates direction change, not the ability to "push' the foil into a yaw moment with your feet and hips.
You are correct the turn itself AFTER the initation by means of yaw and leaning and kite, is held in a curve by the lift going towards the center of the turn now, but this is simply a following effect of the leaning and kitepull and yaw movement and no reason to make it more complicated than necessary, for those who want to learn to turn
And the ability to push the foil into a yaw moment is definitely the major part of how fast and tight you can carve, together with leaning inside in sync and using the kite
The thing is, that this very yaw move is what is missing when we learn to foil and want to turn, everything else comes quite fast, except this which is not natural from other boards.
PS: Stepping on the rudder pedal actually turns the plane quite a lot, even with level wings.
This is the reason why we use the ailerons to bank our gliders in the opposite direction of the rudder, so we go straight when we slideslip for a landing if brakes are missing.