Part 1 of Essay
The story of is a Puritan fairy tale. It is the story of how two honest, straightforward, and God-fearing Americans accomplished something fantastic and magical -- creating a craft of stick and fabric that mounted the air like the chariots of the gods, opening the sky to all humankind. Their success came so suddenly and f ....

Part 2 of Essay
.... a hundred years earlier. Through an extensive study of birds and bird flight, Cayley realized that the lift function and the thrust function of bird wings were separate and distinct, and could be imitated by different systems on a fixed-wing craft. Lilienthal began his work on heavier-than-air craft not by developing a complete airplane, but instead by focusing his efforts on a fixed-wing glider. Lilienthal brought a much-needed respectability to the enterprise of inventing an airplane. Up to that point, eff ....