They Make It Look Easy
Da Vinci’s study of birds was extensive. His notebooks include pages and pages of observations and drawings. He made detailed sketches of a bird’s body and wings. He observed the subtle movements of the wings in flight and the reaction of the wings against different wind conditions. He noted how a bird can drop from the sky and dive to the ground. He also watched a bird remain stationary in the wind by using fine movements of its wings and tail. He understood how a bird achieves motion by exerting more pressure against the air than the air exerts against its body.
Da Vinci performed many experiments. He constructed models to test the effect of shifting the bird’s center of gravity. He built replicas of birds’ and bats’ wings. He experimented with different materials to test what would be the best material for a full-scale flying machine. He believed that by understanding the mathematics underlying a bird’s movement, man could then mimic it and take to the air.
A Power Problem
Esta historia es de la edición November/December 2023 de Cobblestone American History Magazine for Kids.
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Esta historia es de la edición November/December 2023 de Cobblestone American History Magazine for Kids.
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Eye in the Sky
An interview with Joe Piotrowski
Airborne Animals
Humans have taken to the skies in balloons, gliders, and airplanes-but we're not alone among the clouds. Animals of all sorts have evolved to harness wind power.
TAKING OFF
The Wright brothers expected airplanes to “take off,” but even they might be amazed at the way the airline industry has become big business. In the past, it was expensive to send something by plane.
GROWTH OF AN INDUSTRY
After their historic flight at Kitty Hawk in 1903, Wilbur and Orville Wright returned to Dayton, Ohio. They spent the next few years making adjustments and building additional versions of their powered aircraft in their bicycle shop.
WHY KITTY HAWK?
The Wright brothers searched carefully for the best place to test their gliders and flying machines. Their main concern was for good, steady winds. But they also hoped to find a remote location to allow them to perform tests away from the public eye.
Two Brothers From Ohio
Most people do not realize that the Wright brothers—Wilbur, born in 1867, and Orville, born in 1871—performed various scientific experiments before inventing their aircraft. For as long as anyone in their hometown of Dayton, Ohio, could remember, the Wright boys had worked on mechanical projects.
A Helping Hand
May 6, 1896. A group of people who had gathered beside the Potomac River, just south of the U.S. capital, grew quiet. Then, it erupted in cheers as a small, unmanned aircraft took to the skies and flew for more than half a mile. The flight came seven years before the Wright brothers’ first manned, powered flight. The inventor of the aircraft was Dr. Samuel Pierpont Langley.
THE IDEA MEN
People dreamed of flying thousands of years before the Wright brothers found success near Kitty Hawk, North Carolina. These dreamers, such as Leonardo da Vinci, studied birds flying and imagined how humans might do the same—if only they had wings. Other men developed a more hands-on approach to the topic. Early inventors made wings of cloth, glue, and feathers and tied these creations to their arms in an attempt to imitate nature.
Da Vinci's 4 Designs
Have you ever wondered how a bird flies? Leonardo da Vinci (1452–1519) did. He thought that understanding how a bird flies would provide the key to human flight. So, what did da Vinci learn from birds?
Silken Wings
Seven hundred years before the Wright brothers began experimenting with human flight, the Chinese had already mastered its secrets—with kites.
