Historia

On September 24, 1852, the French engineer Henri Giffard steered a cigar-shaped, steam-powered airship seventeen miles from Paris toward Trappes at barely six miles an hour, turning it in slow circles no balloon could manage; a headwind then refused him the trip home.

The flight is filed under aviation firsts, but what Giffard actually proved that afternoon was narrower and stranger: that a machine could argue with the wind, briefly, before losing.

Henri Giffard had a working airship, a hydrogen envelope longer than a city block, and a fully worked-out theory for the steam injector that would make him rich a few years later. What he did not have, on the afternoon of September 24, 1852, was any way to fly home.

A balloon that could argue with the wind

Balloons had been carrying people into the air since the Montgolfier brothers sent one over Paris in 1783. None of them could be steered. A balloonist could vent gas to descend or drop ballast to climb, but the direction of travel belonged entirely to whatever the wind happened to be doing that day.

Giffard, a French engineer not yet thirty, thought the missing piece was simple: an engine light enough to lift with the gas bag, strong enough to push against moving air. Most people who had tried this before him had failed on weight alone: a powerful engine was a heavy engine, and a heavy engine needed more gas to carry it, which meant more drag, which meant needing still more power. Giffard's answer was to accept a very small amount of power and see how far it got him.

What kept the hydrogen from catching fire

The craft he built was elongated rather than round, tapering to a point at each end, something like a very large cigar. By most accounts it ran about 144 feet long and held roughly 113,000 cubic feet of hydrogen. Slung beneath it on a wooden platform sat a steam engine of his own design: three horsepower, turning a large three-bladed propeller, the whole apparatus (engine, boiler, and coke) weighing close to 400 pounds.

Hydrogen is flammable and a firebox produces sparks; putting the two within a few feet of each other is not, on its face, a good idea. Giffard aimed the engine's exhaust funnel straight down, mixing the escaping steam into the exhaust so that nothing hot enough to ignite the gas bag could drift upward. It worked. Nobody was hurt, and nothing burned.

The gas was hydrogen. The fuel was coke. Giffard trusted geometry, not luck, to keep the two apart.

How far did it get?

The flight lifted off from the Hippodrome at the Place de l'Étoile, on ground that now sits close to the Arc de Triomphe, and headed southwest out of Paris. Giffard used a triangular rudder to bring the craft through turns and slow circles along the way — the part that mattered, since it was the first time anyone had done that in a powered aircraft rather than merely drifted in one.

He covered about 17 miles in roughly three hours, landing near the village of Élancourt, next to Trappes. Six miles an hour is a brisk walk.

Why he never made it back

Slow was fine going out. Coming back, a headwind picked up that the little three-horsepower engine simply could not push through. Giffard could turn the airship broadside to the wind and circle it; he could not drive it forward against a stiff gust. He set the craft down and left it there rather than fight a battle the engine had already lost.

The historical record for the day's exact details is not perfectly uniform: older retellings sometimes shorten "near Élancourt" to plain "Trappes," and the reported cruising speed drifts between roughly five and six miles an hour depending on the source. Neither discrepancy touches the two facts every account agrees on: the distance, and the fact that he could steer it and could not fight the wind.

Fifty-one years to Kitty Hawk

Orville and Wilbur Wright would not fly a heavier-than-air machine at Kitty Hawk, North Carolina, until December 1903, more than half a century later. Their airplane and Giffard's airship solved different problems (one generated lift by shape and speed, the other by displacing air with gas), but they were answering the identical question: can a person choose where a flying machine goes, rather than accept wherever it drifts? Giffard answered it first, and answered it in the open air over French farmland with a steam boiler strapped to a wicker frame.

What Giffard did after

He kept building. The French Academy of Sciences awarded him the Montyon Prize in 1859, and he was made a Chevalier of the Legion of Honor in 1863. His later projects moved away from free flight and toward spectacle: a captive balloon in 1867, then a far larger one at the Paris Exposition of 1878, tethered over the Tuileries gardens with a capacity near 26,000 cubic meters. More than 30,000 people paid to ride it skyward on its cable during the exposition, a sightseeing ascent rather than a voyage; still, it was the first time flight was sold to the public as an experience rather than demonstrated as an experiment.

Declining eyesight and worsening chronic pain overtook him in his last years. Giffard died by his own hand in April 1882, inhaling chloroform, and left his estate to the nation for scientific and humanitarian purposes. His name is one of seventy-two engineers' names inscribed on the Eiffel Tower, a monument that would not exist for another seven years.

Powered, steerable flight through gas rather than wings did not end with him. It ran through the Zeppelins of the early twentieth century, survived the Hindenburg disaster of 1937 mostly by switching from hydrogen to inert helium, and largely disappeared from passenger travel once airplanes got faster and cheaper. It has not stayed gone: companies including LTA Research, backed by Google co-founder Sergey Brin, are again building rigid hydrogen airships in the 2020s, betting that a slow, steerable machine still has a job the airplane never took from it. Giffard's engine could not beat a headwind in 1852. The argument about whether something like his machine belongs back in the sky is still open.

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