A Swiss scientist who was named Daniel Bernoulli in the 18th century discovered the Bernoulli’s Principle. Bernoulli (2009) stated that when the velocity of a gas or a liquid increases the pressure of the fluid would then decrease. This can be applied to many things, such as a plane or bird.
Basically anything that uses wings to fly uses the Bernoulli’s Principle. Both birds and planes take an advantage of the Bernoulli the Bernoulli’s Principle. Flight (n.d.)[online] states that airplanes and birds have an airfoil shape. They have this shape in each of their wings and they are used to create lift. An airfoil shape has a certain shape that splits the air at the front part of the wing and it joins back at the back. The wind at the top part of the wing moves a lot faster than the wind at the bottom part of the wing. Since the wind at the bottom part of the wing is a slower fluid, it moves faster than the wind at the top part of the wing. This creates lift and lifts the plane or bird up. Racecars also use this principle so they can have better traction in a race. They use a reverse airfoil at the back of the car instead of an airfoil so that there is a greater amount of pressure at the top part of car and pulls the car down, creating more traction for the car.
Britannica (2014) says an airplane uses four different types of forces in a straight-and-level unaccelerated flight. The four forces are lift, drag, weight, and thrust. These four forces are all essential to the flight of an airplane. Without these forces working together, a plane probably wouldn’t be able to fly. These forces have to work together for a plane to fly.
Lift is one of the four essential forces that is...
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...e forward. A jet engine’s thrust comes from the force of the blades of the turbine. Britannica (2014) also says that a rocket’s thrust comes from the reaction to the burning of the rocket propellant.
Drag is the fourth force that is essential to flying an airplane. It acts as the opposite of thrust, the forward-moving force. Lift always create drag. All elements that is does not help lift is basically drag. Drag slows you down. Britannica (2014) says that parasitic drag is made by resistance due to shape, interference, and other things. Parasitic drag increases as the airspeed of the plane rises. For almost all flights, the most desirable thing to have is minimal drag, because drag is the thing that slows the plane down. Because of this, most pilots give streamlining a considerable amount of attention because it reduces as much drag as it is possible to reduce.
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