Sail Twist explicat

Sail Twist explicat



O discuție despre răsucirea velei, bazată pe experiența și cercetările mele. #Precizie18 #Navigație

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20 thoughts on “Sail Twist explicat

  1. What I still don‘t understand precisely: I should ease the kicker to depower the sail by opening the leech. Something that I want to if I’ m overpowered. But easing the kicker also reduces mastbend and therefore leads to more drought in the sail, creating more heeling forces. So by easing the kicker we create two contrary effects. Which one is more important?

  2. I would like to suggest that angle of attack is a function of the sheet position and that twist changes the airfoil camber. More camber at light wind is similar to flaps on an aircraft taking off and landing at low speed. As wind increases a flatter airfoil works better until there is just too much power and then twist can be increased to spill lift at the top.

  3. You missed the difference in true wind speed from boom level to the truck of the mast. Twist is necessary in light and moderate conditions in order for the whole sail to work and not have the upper part stalled. Watch your leach telltales sometime- you’ll notice that the top stalls very easily- something not covered in your video

  4. Great explanation. Amazing how you can see twist in a simple model. Question: how does this apply to a lateen rig, like a Sunfish?

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