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Introduction Since ancient times, people have always dreamed to fly. The inspiration of flying came from birds. The history of human flight began with adventurous people equipped with flapping wings who flung themselves from high places. However, these devices did not perform well. According to Donald Lopez, Senior Advisor to the director of the National Air and Space Museum, in his book Aviation a Smithsonian guide, people of that time tried to imitate birds. For example “in 1010 a monk named Eilmer jumped from Malmesbury Abbey in England and broke his legs. In 1162, a man in Constantinople fashioned sail-like wings from a fabric gathered into pleats and folds. He plummeted from the top of a tower and died. In 1536, Denis Bolori in France tried to fly using wings flapped by a spring mechanism. He fell to his death when the spring broke.” (Lopez, Aviation a Smithsonian guide, 1995, p 16). From this idea, the main concept of airplane comes from Greek culture that related the principle of flying to birds. Birds have two wings that help them maintain their balance while flying. In addition, by flapping their wings, they can fly and reach high places. Airplane has the same con