TL;DR: Hot air balloons have been lifting humans skyward since 1783, when King Louis XVI insisted the first passengers be a sheep, a duck, and a rooster before any person set foot in the basket. From that royal experiment to Civil War surveillance and Cold War spy missions, ballooning has always been more consequential than it looks. Original patent prints from the 1923 Upson design are available framed or unframed.
In September 1783, King Louis XVI of France faced an unusual request from two papermakers from Annonay. The Montgolfier brothers wanted royal permission to demonstrate their invention: a giant paper-and-linen bag filled with hot smoke that could rise into the sky carrying living creatures. Louis agreed, with a condition. He did not want humans in the basket. Before any person risked their life, the king insisted the first passengers be animals. So the first aeronauts in history were a sheep named Montauciel, a duck, and a rooster. Fifteen minutes after launch, the balloon descended safely about two miles from the Palace of Versailles, all three animals alive. The era of human flight had begun, and it started with barnyard animals over a French garden.
That the entire history of human aviation traces back to a scene this unlikely is one of the reasons balloon history rewards a closer look. Every milestone is stranger than the one before it.
The Montgolfier Brothers and the First Flights
Joseph-Michel and Jacques-Etienne Montgolfier were papermakers, not scientists. Their insight came from watching paper bags rise above a fire. They reasoned, incorrectly, that smoke itself had lifting properties. In fact, the mechanism was simple heat: hot air is less dense than cool air and rises through it. Their misunderstanding of the physics did not prevent them from building balloons that worked.
The unmanned test at Annonay in June 1783 was the first public demonstration. The balloon rose to roughly 6,000 feet and traveled about a mile before descending. Word reached Paris and then Versailles almost immediately, and the Montgolfiers were summoned for a royal audience. The September animal flight at Versailles was the result.
Two months after the Versailles demonstration, on November 21, 1783, Jean-Francois Pilatre de Rozier and the Marquis d'Arlandes completed the first manned flight in history. They rose from the Bois de Boulogne in Paris, drifted over the city for approximately 25 minutes, and landed safely about five miles away. The crowd watching included Benjamin Franklin, then serving as the American Minister to France. When a skeptic in the crowd reportedly asked what use a balloon could possibly be, Franklin answered with a question of his own: what use is a newborn baby?
Early Experiments and Transatlantic Ambitions
The years following 1783 produced a wave of ballooning experiments across Europe. Hydrogen balloons, developed by physicist Jacques Charles, competed with the Montgolfiers' hot air design. Charles made his first hydrogen flight on the same day as the Versailles animal demonstration, and his balloon type would dominate long-distance travel for the next century because hydrogen provided more sustained lift than hot air, which cooled and lost buoyancy as the fire below it died down.
Jean Pierre Blanchard, a French aeronaut, pushed the boundaries of where balloons could go. In 1785, he and American physician John Jeffries became the first people to cross the English Channel by air, completing the journey from Dover to Calais in just over two hours. The feat was genuinely hazardous. Midway across, the balloon began losing altitude and the two men threw overboard everything that was not essential to staying aloft, including most of their clothing. They arrived on the French coast nearly frozen, but alive.
Blanchard went on to demonstrate ballooning across Europe and eventually North America. In January 1793, he flew from Philadelphia to New Jersey in the first balloon flight on American soil. President George Washington was in the crowd. Washington gave Blanchard a letter of safe passage signed in his own hand, addressed to any American citizen who might encounter the balloon after it landed. Blanchard framed it and displayed it for the rest of his career.
Balloons Go to War: The American Civil War
The American Civil War produced the first systematic military use of balloons on the continent. The Union Army's Balloon Corps, established in 1861 under civilian aeronaut Thaddeus Lowe, operated a fleet of seven balloons that flew more than 3,000 observation missions over the course of the war.
Lowe's flagship balloon, the Intrepid, was large enough to carry observers 1,000 feet above the battlefield with a clear view of Confederate positions. From that altitude, the observers could relay troop movements to artillery commanders on the ground via telegraph: Lowe had run telegraph wire up the tether rope, making the balloon the first aerial communications platform in American history. At the Battle of Fair Oaks in 1862, Union artillery directed by balloon observation inflicted significant damage on Confederate positions that would have been invisible from the ground.
The Confederacy responded by building its own balloon program, though with considerably less success. The Confederate balloon, sewn from silk dresses donated by Southern women according to popular legend, was captured by Union forces when the boat towing it ran aground on the James River in 1862. The Union Balloon Corps was eventually disbanded in 1863, partly due to Army bureaucracy and partly because Lowe's role was reclassified to cut his pay. It would not be the last time military aviation was hampered by administrative shortsightedness.
The 20th Century: Scientific Balloons and the Cold War
Ballooning entered a new phase in the 20th century as the technology shifted from curiosity to strategic tool. The development of rubberized and neoprene-coated fabrics in the early 1900s made balloons far more controllable and resistant to puncture than the earlier varnished silk and linen designs.
During World War I, observation balloons were used extensively by both sides on the Western Front. They were such effective intelligence platforms that both sides assigned fighter aircraft specifically to destroy enemy balloons. Balloon busting became a recognized aerial specialty, and the men who did it were considered particularly brave because balloons, unlike aircraft, could not evade attack.
After World War II, the Cold War gave ballooning a final, improbable chapter as a strategic technology. The General Mills balloon program, funded by the U.S. government in the early 1950s, was tasked with developing high-altitude balloons that could carry reconnaissance equipment over the Soviet Union, Communist China, and Eastern Europe. The program was called Project Mogul in its early incarnation and later contributed to the better-known Project Genetrix, which launched hundreds of camera-carrying balloons across Soviet airspace beginning in 1956.
The Soviets shot down many of these balloons, and the program was eventually suspended after diplomatic protests. But it had produced genuine intelligence value and, more durably, had advanced the engineering of high-altitude balloon systems that would later serve scientific purposes. General Mills, better known today as a cereal company, played a quiet but significant role in Cold War aerial reconnaissance.
The Sport Ballooning Revival
Modern recreational hot air ballooning traces to a different branch of the technology tree. In the late 1950s and early 1960s, the U.S. Navy's Office of Naval Research funded experiments in controlled hot air flight using propane burners instead of open fires. The key figure was Ed Yost, a balloonist and engineer who made the first successful flight of a modern propane-powered hot air balloon in October 1960 in Bruning, Nebraska.
Yost's design solved the central problem of traditional hot air ballooning: the open fire required to heat the air was difficult to control and presented obvious hazards. A propane burner could be adjusted precisely, turned on and off as needed, and was far safer in the basket environment. The modern sport of hot air ballooning follows directly from Yost's 1960 flight.
By the 1970s, sport ballooning had developed a competitive community with organized races and altitude records. The first solo transatlantic balloon crossing was completed in 1984 by Joe Kittinger, an Air Force colonel who had also set a record by parachuting from a balloon at 102,800 feet in 1960. The first nonstop around-the-world balloon flight was completed by Bertrand Piccard and Brian Jones in 1999, 20 days after launch. The distances covered by modern balloons would have been unimaginable to the Montgolfiers.
Ralph Upson and the 1923 Patent
Against this background of military operations and scientific experiments, systematic inventors were also at work refining the engineering of balloons themselves. Ralph Upson of Birmingham, Michigan was one of the most prolific balloon engineers in American history. He had competed in Gordon Bennett Cup balloon races, the premier long-distance balloon racing event of the early 20th century, and won. His experience in competitive distance flying gave him deep practical knowledge of what limited balloon performance.
In 1923, Upson was granted a patent for a hot air balloon design that addressed two persistent engineering problems. His construction approach increased the maximum flight altitude achievable by a given balloon by improving the envelope geometry, and it reduced the ballast weight required to achieve and maintain altitude. Ballast, the weight thrown overboard to gain lift, was a finite resource: once it was gone, the balloon had no further way to rise or maintain height. Upson's design gave pilots more control over altitude without consuming ballast as quickly.
The patent expired in 1942, but Upson continued working. He went on to file 35 patents over the course of his career, covering various aspects of balloon construction, flight systems, and aeronautical engineering. The 1923 balloon patent sits at the center of that body of work: a specific technical solution to a problem every serious balloonist understood, from a man who had won races by understanding it better than his competitors.
The drawing filed with that patent in 1923 is the artifact. The envelope geometry Upson specified, the construction details that enabled higher altitude and better ballast efficiency, recorded at the moment of invention in the formal language of the U.S. Patent Office.
Frequently Asked Questions
Who made the first hot air balloon flight?
The first manned hot air balloon flight was made by Jean-Francois Pilatre de Rozier and the Marquis d'Arlandes on November 21, 1783, over Paris. They flew for about 25 minutes and covered approximately five miles. Before that flight, the Montgolfier brothers had tested the technology with animals, including a sheep, a duck, and a rooster, during a demonstration before King Louis XVI at Versailles in September 1783.
When did hot air balloons come to America?
The first balloon flight in North America took place on January 9, 1793, when Jean Pierre Blanchard flew from Philadelphia to New Jersey in the presence of President George Washington. Washington gave Blanchard a signed letter of safe passage to show any American citizens who might encounter the landing. Balloon activity in the United States grew steadily through the 19th century, culminating in the Union Army's active Balloon Corps during the Civil War.
How were balloons used in the Civil War?
The Union Army Balloon Corps, led by Thaddeus Lowe, operated seven balloons that flew over 3,000 observation missions during the Civil War. Lowe's balloons carried observers up to 1,000 feet above the battlefield to monitor Confederate positions, and communicated via telegraph wire run up the tether rope. The artillery direction provided by balloon observation influenced several key engagements, including the Battle of Fair Oaks in 1862.
Who invented the modern hot air balloon?
The modern propane-powered hot air balloon was developed by Ed Yost, who made the first successful flight using a propane burner system in Bruning, Nebraska in October 1960. Yost's design replaced the dangerous open-fire systems used in earlier balloons with a controllable propane burner, making recreational ballooning practical and safe. This is the system still used in all sport ballooning today.
What is the Ralph Upson hot air balloon patent?
Ralph Upson of Birmingham, Michigan was granted a U.S. patent in 1923 for a hot air balloon construction design that improved flight altitude and reduced the ballast weight required for flight. Upson was a competitive balloonist who had won the Gordon Bennett Cup, the premier long-distance balloon race of the era, and his patent reflected practical knowledge earned in competition. The patent expired in 1942, but Upson continued filing patents throughout his career, eventually accumulating 35 in total.
Written by Rider Tuff, founder of Timeless Patents. Timeless Patents makes museum-quality patent art prints from original U.S. Patent Office documents, celebrating the inventors behind history's most fascinating objects and machines. Every print is available framed or unframed. Shop the full aviation collection →
