4 forces of flight
Have you ever looked up at an airplane and given any thought to the forces that keep it moving and in the air? There are four forces that keep an airplane in the air; they are lift, weight, thrust, and drag. The combination of these helps an airplane sustain flight. The most important of these aerodynamic forces is lift. Without lift, the airplane could not stay in the air. Lift is created when the camber (curvature) of an airfoil’s upper surface makes the air flowing over it moves faster than the air flowing under the wing. This increase in velocity reduces the pressure on the top of the wing so lift is produced. This is known as Bernoulli’s Principle. This principle is so named because Daniel Bernoulli, a Swiss scientist, discovered it (Jeppesen). Every airfoil, no matter what its camber or chord, will lose its smooth flow at some point along the upper surface. The regular airfoil has turbulence somewhere forward of the trailing edge even though level flight is maintained. With every increase in the angle of attack, this turbulent flow moves closer forward to the leading edge. This is true up to a point because one must also consider the power need to move the aircraft through the air. With unl
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Some common words found in the essay are:
Bernoulli Swiss, Levy Parasite, Levy Dynamic, , Levy Pressure, angle attack, induced drag, Bernoullis Principle, pressure drag, angle attack means, aerodynamic forces, level flight, drag lift, upper surface, aircraft air, drag aircraft, turbulent flow, attack means wing, increase angle attack, newtons third law, third law motion,
Approximate Word count = 1217
Approximate Pages = 5 (250 words per page double spaced)
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