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This Day in History — Santos-Dumont's 14-bis Flies at Bagatelle

On this day in 1906

On October 23, 1906, Alberto Santos-Dumont's 14-bis rolled across a Paris field on its own wheels and flew about 60 meters, Europe's first public flight.

The Off-Key Bard stands on a grassy field at Bagatelle, near Paris, in October 1906. Spectators gather beneath the autumn sky, watching a peculiar machine made of bamboo, silk, and an engine. It resembles a collection of enormous box kites mounted on wheels. Standing at its controls is a Brazilian inventor who has already conquered the sky in balloons and airships. Now he intends to prove something even more extraordinary.

"An aircraft heavier than air can lift itself from the ground, powered by its own engine, and fly before the watching world."

On October 23, 1906, the Brazilian aviation pioneer Alberto Santos-Dumont flew his experimental aircraft, the 14-bis, at Bagatelle in Paris. Rolling on its own wheels with no launch rail or catapult, the machine took off under its own power and flew about 60 meters (roughly 200 feet) at a height of about three meters. The flight won him the trophy Ernest Archdeacon had offered for the first flight of more than 25 meters, and Britannica calls it Europe's first public flight of a heavier-than-air machine. It was a defining moment in European aviation. It also became part of one of the most enduring arguments in the history of flight: who should get credit for inventing the airplane? The answer is more complicated than asking which machine left the ground first.

The Race to Control the Air

To understand the flight, we have to go back to the end of the 19th century, when inventors around the world were chasing controlled flight. People had already learned to rise into the sky. In 1783 the Montgolfier brothers launched an unmanned hot-air balloon at Annonay, France, and on November 21 of that year two men made the first free flight with human passengers, drifting about nine kilometers across Paris. Less than two weeks later a hydrogen balloon followed. But balloonists had little say over where they went. They could rise, descend, and ride the winds at different altitudes, but they could not steer.

The next challenge was propulsion. Inventors built dirigibles, steerable airships that combined gas lift with engines and propellers. Another idea was drawing attention too. Instead of floating on hot air or hydrogen, could a machine generate enough lift from its wings to carry its own weight? That was the problem of heavier-than-air flight, and one of the people it fascinated was Alberto Santos-Dumont.

The Man from Minas Gerais

Santos-Dumont was born on July 20, 1873, in Minas Gerais, Brazil, the heir to a wealthy coffee-growing family. His father, Henrique Dumont, was an engineer. He first visited Europe at 18, and in his mid-twenties he left for France, where he would spend most of his adult life. Paris was then a center of science, industry, and aeronautical experiment, and Santos-Dumont had something many inventors lacked: enough personal money to build and rebuild without outside investors.

He began with balloons. His balloon Brasil made its first ascent in Paris on July 4, 1898, and he soon moved on to powered airships. His designs grew steadily more sophisticated, and he became a familiar figure over Paris, steering his small airships where the wind alone would not have taken them.

His greatest airship triumph came on October 19, 1901. Flying his dirigible No. 6, he rounded the Eiffel Tower and returned to Saint-Cloud in 29 minutes 30 seconds, just inside the 30-minute limit of the Deutsch de la Meurthe Prize. The committee initially balked because the landing took about a minute, but public support and his own protest reversed the decision, and the prize money was released on November 4. The feat made him an international celebrity.

But airships were large and vulnerable to wind, and Santos-Dumont began turning his attention to heavier-than-air machines.

A Box Kite on Wheels

By then the Wright brothers had already flown. On December 17, 1903, at Kitty Hawk, North Carolina, the Wrights made four flights, the longest covering 852 feet in 59 seconds. The Smithsonian describes the 1903 Flyer as the first powered, heavier-than-air aircraft to make a sustained, controlled flight with a pilot aboard. It took off from a 60-foot monorail, because soft sand ruled out conventional wheels. The brothers kept improving their machine near Dayton, Ohio, and on October 5, 1905, Wilbur Wright flew 38.9 kilometers in 39 minutes.

Europe, though, was not watching. The Wrights did not fly publicly in Europe until 1908, and their early flights were witnessed by no official observers. Rumors of half-hour flights near Dayton reached France and were a spur for Santos-Dumont, and Britannica notes that his design drew on what he knew of the 1905 Wright Flyer. For many Europeans, a flight had to happen before independent witnesses under agreed rules before it counted.

Santos-Dumont's aircraft became known as the 14-bis. It got its name because he first tested it hung beneath his airship No. 14 to simulate flight, and bis means "again" or "second." The machine was odd even by the standards of its time. Its wings were box-like cells based on Hargrave's box-kite designs, with a forward-mounted control surface in place of a conventional tail, an arrangement later called a canard. The frame was bamboo and pine joined by aluminum sockets and covered with Japanese silk. The pilot stood in a wicker basket near the middle, and behind him a 50-horsepower Antoinette V-8 engine drove a two-bladed pusher propeller about two meters across. The controls were so unconventional that some were attached to a harness on the pilot's shoulders, so he shook as he flew.

The feature that set it apart from the Wrights' machine was a wheeled undercarriage. Santos-Dumont's airplane could roll across level ground, build speed under its own power, and lift off without a rail. The Wrights' rail was a practical choice rather than a sign their airplane could not fly, but wheels were the approach that aircraft design would eventually follow.

Bagatelle

In the summer of 1906 he tested the machine under the airship and on the ground. On September 13 the 14-bis made its first short hop at Bagatelle, a few meters long. The landing broke its propeller, and the distance was far too short for any prize. He kept working.

Ernest Archdeacon had put up a trophy for the first heavier-than-air flight of more than 25 meters. On October 23 Santos-Dumont brought the 14-bis back to Bagatelle, in front of spectators, and it was clear what the day demanded: not a leap but a flight.

He accelerated over the grass. The wheels rolled, the propeller pushed, and the machine nosed up and left the ground. The 14-bis flew a few meters above the field, made a slight turn, and came down about 60 meters from where it started, damaging the wheels and rudder on landing. Archdeacon ran to meet him, followed by a cheering crowd.

Accounts of exactly what happened that afternoon differ. The 60-meter figure is the most common, but some sources say 50 meters, and an Air & Space account gives about 120 feet at nine feet up. Some Brazilian accounts give a duration of about seven seconds, but Wikipedia notes that the judges forgot to time and record the flight, so there is no official stopwatch figure. The brief flight cleared the 25-meter bar by a wide margin, and it showed that a heavier-than-air machine could take off on its own and fly in public view.

Three Weeks Later

The 14-bis still had a flaw. It had weak lateral stability: when an airplane rolls to one side, the lift on its wings becomes uneven, and without roll control even a small disturbance can become dangerous. The Wrights had solved the problem with wing warping, a method dating back to 1899, which twisted the wings. Santos-Dumont chose a different route. Before resuming flights in November he added octagonal ailerons in the middle of each outermost wing cell, worked by cables attached to his shoulders. They were early ailerons, the kind of moving surface that is standard on aircraft today.

On November 12, 1906, he was back at Bagatelle for the official attempt at the Aéro-Club de France's 1,500-franc prize for the first flight of 100 meters. Voisin also entered a Blériot-built biplane, but it was damaged after several failed attempts and withdrew. Santos-Dumont made four flights, dropping markers from a following car to measure the distances. On the fourth, he took off against the wind and climbed to about six meters, nearly stalling, then made a right turn and landed. The flight covered 220 meters (722 feet) in about 21 seconds. Sources differ slightly on the time, with the FAI giving 21.5 seconds and others 21 to 22.

It won the prize and was the first heavier-than-air flight recognized by the Fédération Aéronautique Internationale, which calls it the first officially observed flight in Europe longer than 25 meters. It also showed that October's success had not been an accident.

Who Flew First?

In Brazil, Santos-Dumont is celebrated as the Father of Aviation, and October 23 is Aviator's Day, established by Law 218 of July 4, 1936. A popular Brazilian belief holds that he beat the Wrights to a practical airplane. His supporters note that the 14-bis took off on wheels, without a rail or catapult, flew in public, and was recognized by aviation authorities.

The Wright brothers' flights came nearly three years earlier, and historians and institutions generally recognize them as the first sustained, controlled, powered flights of a heavier-than-air aircraft. Their takeoffs were helped by a rail and later a catapult and a headwind, and they were not witnessed by official observers. The Wrights also pioneered control about all three axes, a system Santos-Dumont later adopted for his own aircraft.

The disagreement depends on which milestone matters most. The first powered flight? The first fully controlled flight? The first takeoff on wheels, with no rail? Or the first flight observed and certified under competition rules? These are related but separate achievements. The record can honor the Wrights' earlier flights and still recognize that Santos-Dumont's October 23 flight was a landmark: the first time a heavier-than-air machine took off and flew in front of a European public.

What Came Next

The field moved fast. On July 25, 1909, Louis Blériot flew a monoplane from Calais to Dover across the English Channel in 37 minutes. Santos-Dumont meanwhile turned toward making flight smaller and cheaper. He began testing the Demoiselle in November 1907, a compact, light monoplane whose 1909 version, No. 20, is described as the first ultralight aircraft, and he gave away the drawings. Popular Mechanics published plans for it in 1910, and about 300 were built in several European countries and in the United States.

His own flying career ended early. His last flights were at Reims on August 22, 1909. After a Demoiselle accident on January 4, 1910, he closed his workshop and withdrew from public life. He had begun to show symptoms of multiple sclerosis around 1909. He died on July 23, 1932, in Guarujá, São Paulo, by which time the airplane had changed beyond recognition. The aircraft that flew 60 meters in 1906 belonged to an earlier world.

Yet his achievement did not come from having an engine strong enough to lift a machine. It depended on balancing power, weight, lift, stability, and control, concerns that still shape every aircraft. Engines provide thrust. Wings generate lift. Control surfaces steer. And the interaction among them decides whether an aircraft flies safely.

"A field of grass, a frame of flight,
A daring dream takes sudden height.
Before the crowd, the engine roared—
And Europe's skies were newly explored."

The flight of the 14-bis reminds us that aviation was not the accomplishment of one inventor or one nation. It was an international effort of scientists, mechanics, engineers, and pilots who attacked the same problems from different directions. Some worked in private workshops, and others competed for prizes before large crowds. Some focused on stability and control, and others on lighter engines, better wings, or practical ways to take off. Together, they turned the airplane from a fragile invention into one of the defining technologies of the modern world.

Santos-Dumont's flight on October 23 was only a few seconds long. But those seconds mattered. They gave a European audience a public demonstration that a heavier-than-air machine could fly under its own power, and they helped inspire the next generation of aviators.

On October 23, 1906, Alberto Santos-Dumont flew his 14-bis about 60 meters over the Bagatelle field in Paris, winning the Archdeacon trophy and making Europe's first public flight of a heavier-than-air machine. Standing on a growing body of aviation research, he helped carry the airplane out of private workshops and into public view.

Sources

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