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| When you throw a stone into the air it does not take long before it comes down again. But a glider can stay in the air for hours – how come?
Click Miller |
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| If you cut the wing of a glider in half you can see that the upper side is curved whereas the lower side is almost straight. |
When the wing whistles through the air, the air moves faster across the curved surface. This creates a low pressure pulling the glider wing up. Click Miller |
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| The wings of a glider provides a lift so the glider can float even though gravity is pulling at it. |
A wind turbine blade works the same way.Click Miller |
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| You already know that a low pressure can lift things. Just think of vacuum cleaning. The vacuum cleaner creates a low pressure – a partial vacuum – inside the tube. This low pressure can lift dust and dirt from the floor. The vacuum can even leave red marks on your skin if put the nozzle to your skin. Click Miller |
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 Aerodynamics of Wind Turbines: Lift (lift) |
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