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Thursday 17 November 2016

How do planes fly Explanation

How do planes fly


Planes were invented long ago. Probably before your grandparents were born. Not many people know how planes fly and not many care.

To start off the four forces of flight are lift, weight, drag and thrust. Lift is to fly higher, weight is to go down, thrust is to go faster and drag is to go slower or backwards. The first person to make a flying aircraft was Richard Pearse. He finished it on 31 March 1903. On 17 December the Wright brothers finished their plane.

When a plane is taking off the thrust from the engines pushing the plane forward is greater than the drag (air resistance) pulling it back. This creates a lift force, greater than the plane's weight (Gravity), which powers the plane higher into the sky. Big wings also create lift but creates drag at the same time.

Imagine a 747 is sitting on a conveyor belt, as wide and long as a runway. The conveyor belt is designed to exactly match the speed of  the wheels,moving in the opposite direction. Can the plane take off? The answer is no because if the conveyor belt is going the exact same speed and it’s the exact same size as the plane it won’t take off because when the plane is going forwards and the conveyor belt is going backwards the plane will stay in the same spot from the conveyor belt pulling it back.

Planes have tails to keep them stable. Not just vertically but also horizontally.But this will only work if the tail is a V-type shape.




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