For thousands of years, humans have dreamed of taking to the skies. The quest has led from kite flying in ancient China to hydrogen-powered hot-air balloons in 18th-century France to contemporary aircraft so sophisticated they can’t be detected by radar or the human eye.
Below is a timeline of humans’ obsession with flight, from da Vinci to drones. Fasten your seatbelt and prepare for liftoff.
1505-06: Da Vinci dreams of flight, publishes his findings
Few figures in history had more detailed ideas, theories and imaginings on aviation as the Italian artist and inventor Leonardo da Vinci. His book Codex on the Flight of Birds contained thousands of notes and hundreds of sketches on the nature of flight and aerodynamic principles that would lay much of the early groundwork for—and greatly influence—the development of aviation and manmade aircraft.
November 21, 1783: First manned hot-air balloon flight
Two months after French brothers Joseph-Michel and Jacques-Étienne Montgolfier engineered a successful test flight with a duck, a sheep and a rooster as passengers, two humans ascended in a Montgolfier-designed balloon over Paris. Powered by a hand-fed fire, the paper-and-silk aircraft rose 500 vertical feet and traveled some 5.5 miles over about half an hour. But in an 18th-century version of the space race, rival balloon engineers Jacques Alexander Charles and Nicholas Louis Robert upped the ante just 10 days later. Their balloon, powered by hydrogen gas, traveled 25 miles and stayed aloft more than two hours.
1809-1810: Sir George Cayley introduces aerodynamics
At the dawn of the 19th century, English philosopher George Cayley published “On Aerial Navigation,” a radical series of papers credited with introducing the world to the study of aerodynamics. By that time, the man who came to be known as “the father of aviation” had already been the first to identify the four forces of flight (weight, lift, drag, thrust), developed the first concept of a fixed-wing flying machine and designed the first glider reported to have carried a human aloft.
September 24, 1852: Giffard's dirigible proves powered air travel is possible
Half a century before the Wright brothers took to the skies, French engineer Henri Giffard manned the first-ever powered and controllable airborne flight. Giffard, who invented the steam injector, traveled almost 17 miles from Paris to Élancourt in his “Giffard Dirigible,” a 143-foot-long, cigar-shaped airship loosely steered by a three-bladed propeller that was powered by a 250-pound, 3-horsepower engine, itself lit by a 100-pound boiler. The flight proved that a steam-powered airship could be steered and controlled.
1876: The internal combustion engine changes everything
Building on advances by French engineers, German engineer Nikolaus Otto devised a lighter, more efficient, gas-powered combustion engine, providing an alternative to the previously universal steam-powered engine. In addition to revolutionizing automobile travel, the innovation ushered in a new era of longer, more controlled aviation.