History of Flight — 3-Part Series

• Part 1: The Invention of the Hot Air Balloon
• Part 2: The Age of Airships
• Part 3: The Invention of the Airplane (current)

The Invention of the Airplane: Humanity’s Desire to Fly

Watching birds soar through the sky, humanity has dreamed of flight for thousands of years. From the ancient Greek myth of Icarus through Leonardo da Vinci’s Renaissance-era flying machine designs and 19th-century glider experiments to the Wright brothers’ successful powered flight in 1903, the history of human flight has been a continuous journey of courage, innovation, and relentless challenge. In this article, we explore the remarkable journey of human flight from myth and imagination to reality.

Icarus’ Wings: The Myth of Flight

Humanity’s desire to fly can be found even in mythology. The ancient Greek myth of Icarus and his father Daedalus symbolically illustrates humanity’s desire to fly and its limitations.

The Background of the Myth

Daedalus was a brilliant craftsman who designed the Labyrinth of Crete. After King Theseus of Athens escaped from the Labyrinth, King Minos of Crete suspected that Daedalus and his son Icarus had leaked the secrets of the maze and imprisoned them.^[1]

The Birth of the Wax Wings

Seeking a way to escape, Daedalus created wings using bird feathers, thread pulled from blankets, leather straps from sandals, and wax. Before escaping, Daedalus gave his son an important warning: flying too low would wet the feathers with seawater, and flying too high would melt the wax from the sun’s heat, so he must maintain a middle altitude.^[1]

The Tragic Ending

However, intoxicated by the thrill of flight, Icarus ignored his father’s warning and flew higher and higher. As he approached the sun, the wax in his wings melted, and Icarus fell from the sky into the sea and drowned. This myth was recorded in its most influential form in Ovid’s Metamorphoses from the Roman era, and has been passed down through the ages.^[2]

The myth of Icarus warns of both humanity’s desire to fly and the dangers of hubris in trying to transcend the laws of nature. Yet paradoxically, this myth is also the starting point of humanity’s never-abandoned dream of reaching the sky.

Leonardo da Vinci: Pioneer of Flying Machines

Moving from myth to reality, the Renaissance genius Leonardo da Vinci (1452-1519) was one of the first to scientifically explore human flight.

Observing Birds

Da Vinci carefully observed and studied the flight of bats, kites, and birds. He analyzed various wing structures, believing that humans could fly by mechanically flapping wings.^[3]

The Design of the Ornithopter

Around 1485, da Vinci designed a flying machine called the “Ornithopter.” Ornithopter combines the Greek words for “bird” (ornithos) and “wing” (pteron), meaning a machine that flies by flapping wings.^[3]

Da Vinci’s ornithopter had a wingspan exceeding 33 feet (about 10 meters), with plans to build the frame from pine and cover it with raw silk to create a light but strong membrane. The pilot was designed to lie down or stand and move the wings using arm or leg power.^[3]

The Codex and Aeronautical Theory

Around 1505, da Vinci began writing the Codex on the Flight of Birds. In this notebook of roughly twenty pages, he discussed the key concept of the relationship between the center of gravity and the center of lift in a bird’s wing — an insight that provided a theoretical foundation for the successful development of aircraft in later centuries.^[4]

Limitations and Legacy

Da Vinci appears never to have actually built his flying machine. The fundamental reason the ornithopter was never realized was that human muscle strength and endurance were woefully inadequate compared to birds. Da Vinci could not overcome this basic limitation of human physiology.^[3]

However, da Vinci’s forward-looking insights into bird flight and mechanical flight had a great impact on later aviation development. His codices contain records of numerous creations and inventions, laying the foundation for a scientific approach to flight.

Otto Lilienthal: The Father of Gliding

In the late 19th century, German engineer Otto Lilienthal (1848-1896) was the pioneer who came closest to human flight.

The Birth of the Glider

Lilienthal and his brother Gustav began studying the aerodynamics and flight mechanics of birds together in the late 1860s. In the 1870s, they used a whirling arm to collect data on wing shapes and air pressure, through which Lilienthal scientifically established that a curved wing cross-section generates lift more effectively than a flat wing surface.^[5]

In 1891, Lilienthal developed the world’s first unpowered aircraft that could carry a person — the glider. His Derwitzer Glider is considered the world’s first successful manned glider, achieving flights up to 80 feet (about 24 meters) near Derwitz/Krielow in Brandenburg, Germany.^[5]

Two Thousand Flights

From 1891 until his accident in 1896, Lilienthal personally flew more than 2,000 times across at least 16 different types of gliders, meticulously recording photographs and data. Of these, 15 were monoplanes and 3 were biplanes.^[5]

Lilienthal’s flight experiments were documented alongside contemporary advances in high-speed photography. Images of Lilienthal flying through the sky on gliders appeared in newspapers and magazines worldwide, greatly raising public and scientific hopes for the practical realization of flight.^[5]

Tragic End and Legacy

On August 9, 1896, Lilienthal encountered strong winds during a glider flight experiment and went into a stall. The glider, now out of control, fell vertically from 15 meters, and Lilienthal died the next day in a Berlin hospital from a broken spine.^[6]

His last words are said to have been “Opfer müssen gebracht werden” (Sacrifices must be made). Although Lilienthal gave his life for the dream of flight, the detailed experimental data in his 1889 book Der Vogelflug als Grundlage der Fliegekunst (Bird Flight as the Basis of Aviation) became a valuable asset to later aviation pioneers.^[5]

Lilienthal’s lift data tables in particular served as a starting point for the Wright brothers when designing their early aircraft, and he is called the “father of aviation” or “father of flight.”^[6]

The Wright Brothers: Success of Powered Flight

Two brothers were deeply influenced by Otto Lilienthal’s research. They were Wilbur Wright (1867-1912) and Orville Wright (1871-1948), who ran a bicycle shop in Dayton, Ohio.

Scientific Approach

The Wright brothers were not mere inventors but systematic scientists. They applied mechanical engineering knowledge gained from bicycle manufacturing to flight research. Between October and December 1901, the brothers tested over 200 miniature wing models in a homemade wind tunnel measuring 1.8 meters in length, and precisely analyzed 38 of them. Biographer Fred Howard called this wind tunnel work “the most significant and fruitful aeronautical experiments ever conducted in so short a time with so little expenditure of money.”^[7]

One of the Wright brothers’ most important innovations was the three-axis control system. They developed a system that could independently control pitch (up-down movement), yaw (left-right movement), and roll (rotational movement), creating a truly controllable aircraft. This three-axis control method subsequently became the standard for all fixed-wing aircraft.^[7]

Going to Kitty Hawk

The Wright brothers chose the small town of Kitty Hawk, North Carolina, for their flight experiments. The Kill Devil Hills area had consistently strong winds that made it easy for aircraft to take off, and the surrounding sand dunes and beaches made landings less dangerous.^[8]

December 17, 1903: The Historic Moment

On December 14, 1903, Wilbur, who won the coin toss, attempted the first flight but stalled after about 3 seconds and failed. The Flyer sustained minor damage.^[8]

After repairs, on December 17, 1903, the historic moment arrived.

In the first flight, Orville piloted and flew 36 meters (120 feet) for 12 seconds. In the following second and third flights, Wilbur and Orville flew 53 meters and 61 meters respectively.^[8]

In the fourth and final flight, Wilbur successfully flew 255.6 meters (852 feet) for 59 seconds. This was the first time in human history that a human succeeded in sustained, controllable flight using a powered aircraft.^[8]

The Flyer’s engine was a four-cylinder gasoline engine built by the brothers’ mechanic Charlie Taylor, producing approximately 12 horsepower (9 kilowatts) and weighing 82 kilograms.^[9]

There were a total of five witnesses to this historic moment. Shortly after, a gust of wind overturned the Flyer, severely damaging it, and it never flew again. The original aircraft was acquired by the Smithsonian National Air and Space Museum in 1948 and is currently on display in Washington, D.C.^[8]

The Dawn of the Aviation Age

After the Wright brothers’ success, aviation technology developed rapidly.

Early Aviation Competition

After the success of 1903, the Wright brothers continued to improve their aircraft and increase flight time and distance. In 1905, they succeeded in flying 39 kilometers for 39 minutes.^[10]

Aviation fever also heated up in Europe. France’s Louis Blériot piloted a Blériot XI monoplane across the approximately 40-kilometer English Channel on July 25, 1909, completing the crossing in 36 minutes and 30 seconds. This flight won the £1,000 prize offered by the Daily Mail and was a landmark event that proved the airplane could become a practical means of transportation, not merely an experimental device.^[10]

World War I and Aviation Technology

World War I (1914-1918) tragically became a catalyst for aviation technology development. Aircraft initially used for reconnaissance soon evolved into fighters and bombers. In 1915, Dutch-born engineer Anthony Fokker developed a synchronized machine-gun interrupter gear, dramatically improving fighter performance, and the war rapidly advanced aviation technology in all aspects — engine power, flight speed, altitude, and durability.^[11]

The Beginning of Commercial Aviation

Commercial aviation began in the 1920s. The first regular international air route was established in 1919. On May 20, 1927, Charles Lindbergh flew solo and non-stop from New York to Paris — a distance of approximately 5,800 kilometers — in over 33 hours aboard the custom-built single-engine monoplane Spirit of St. Louis. The flight earned him the $25,000 Orteig Prize and deeply imprinted on the public the possibility of air travel.^[12]

Through World War II, jet engines were developed, and from the 1950s the jet airliner era opened. On February 9, 1969, the Boeing 747 made its maiden flight, and the following year in 1970 it entered service with Pan American World Airways, ushering in the era of mass air transportation.^[13]

Modern Aviation and the Future

Today, aviation technology has reached levels beyond imagination. In the 1960s, supersonic reconnaissance aircraft exceeding three times the speed of sound (SR-71 Blackbird) appeared, and from the 1970s to the early 2000s, the supersonic airliner Concorde operated commercially.^[10]

On July 20, 1969, when Apollo 11 landed on the moon, humanity opened the aerospace era just 66 years after the Wright brothers’ first flight.^[10]

In the 21st century, new aviation technologies such as drones, electric propulsion aircraft, and autonomous flight systems are being developed. Development of spacecraft for space tourism and Mars exploration is also actively underway.

Conclusion

From Icarus’ wax wings to the Wright brothers’ Flyer, and to modern jet airliners and spacecraft, the history of human flight has been a continuous journey of challenge and innovation.

Leonardo da Vinci scientifically explored flight, Otto Lilienthal risked his life experimenting with gliders, and the Wright brothers finally made humanity’s age-old dream a reality. Their achievements were not simply about creating machines, but victories of the human spirit that made seemingly impossible dreams possible.

Humanity’s desire to fly was sometimes dangerous like the mythical Icarus, but through scientific approaches and constant experimentation, it was ultimately realized. The invention of the airplane was not simply an innovation in transportation — it was proof that humanity could overcome nature’s limitations and turn imagination into reality. And that journey continues still.