how sailships can sail upwind.

Question

I tried to google it and it left me very confused.

In: 306

Answer 1

First, understand an airplane wing and lift. The shape of the wing causes air to flow over the rounded top of the wing and creat a vacuum or lift. A sail is a vertical wing. So, if facing into the wind, the if the rounded part of the sail is bulging to the left, “lift” with suck the boat to the left and vice-versa