.: Pilot Top Related Articles
1). Small Aircraft Control Surfaces
Anyone who has held their hand out of a car into the wind to play airplane already has a fundamental impression of control surfaces on the airplane.
When the heel of the palm went down, the airpressure under the hand pushed the hand up. That's called lift. The airflow over/under the hand changes with the shape of the hand or airfoil. If you had little cut-outs near your wrist, there wouldn't be as much lift.
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