Airplanes

Part I of Essay
One of the first things that is likely to be noticed during a visit to the local airport is the wide variety of airplane styles and designs. Although, at first glance, it may be seen that look quite different from one another, in the long run their major components are qui ....

Part II of Essay
.... are referred to as high-, mid-, and low-wing, respectively. The number of wings can also vary. Airplanes with a single set of wings are referred to as monoplanes, while those with two sets are called biplanes. To help fly the airplane, the wings have two types of control surfaces attached to the rear, or trailing, edges. They are referred to as ailerons and flaps. Ailerons extend from about the midpoint of each wing outward to the tip. They move in opposite directions - when one aileron goes up, the other goes down. Flaps extend out ....