Part 1 of Essay
One of the first things that is likely to be noticed during a visit to the local airport is thewide variety of airplane styles and designs. No matter what each looks like like they alldepend on the the same four factors which are lift, weight, thrust, and drag Lift is the upward force created by the effect of airflow as ....

Part 2 of Essay
.... is stationary on the ramp, it is also in equilibrium, but the aerodynamic forces are not a factor. In calm wind conditions, the atmosphere exerts equal pressure on the upper and lower surfaces of the wing. Movement of air about the airplane, particularly the wing, is necessary before the aerodynamic force of lift becomes effective. During flight, however, pressures on the upper and lower surfaces of the wing are not the same. Although several factors contribute to this difference, the shape of the wing is the pri ....