Today was a bit slow on the front pages, so I went digging. When the front pages are thin, I look for strange headlines, wild stories, or just plain amazing photos. This one stuck out to me for simple reasons.

I knew the helicopter didn't exist in 1926. The first practical one wouldn't fly for another thirteen years. So what I saw here was something older, stranger, and almost entirely forgotten: the autogyro. Called the “windmill plane” that day.

And once I started pulling the thread on what it was, where it came from, and why you've never heard of it, I couldn't put it down.

Juan de la Cierva was a Spanish civil engineer who became obsessed with a single problem. In the early decades of powered flight, pilots were dying because of the stall — the sudden, catastrophic loss of lift that happens when a fixed-wing aircraft slows below a certain speed or pitches too sharply. If your engine cut out at the wrong moment, or you misjudged your approach, the wing stopped working and the ground came up fast.

Cierva's idea was to separate the concepts of lift and thrust entirely. Instead of a fixed wing generating lift, he put a rotor on top of the aircraft, like helicopter blades, but unpowered. The engine drove a conventional propeller at the front that pulled the aircraft forward. The forward motion pushed air upward through the rotor, causing it to spin freely and generate lift on its own, without any mechanical connection to the engine at all. The technical term for this is autorotation. The practical consequence is that if the engine cut out completely, the rotor kept spinning, the aircraft kept generating lift, and the pilot could glide down safely to a landing. It couldn't stall. Not in theory, not in practice.

Cierva first flew a successful version of this machine in Spain in 1923, after four years of failed prototypes. The early failures were caused by a problem he hadn't anticipated: the rotor blade moving forward through the air generated more lift than the blade retreating backward, which caused the whole aircraft to roll sideways and crash. His solution, the articulated hinge that allowed each blade to flap independently and equalize the lift, was the breakthrough that made the whole concept work. It sounds obvious in retrospect. It was not obvious at the time.

By 1925, he'd brought the design to Britain, demonstrated it at Farnborough for the Air Ministry, and by 1926 had set up the Cierva Autogiro Company at Hamble, near Southampton, with funding from a Scottish industrialist named James Weir. The photograph in the Evening Star was taken at that same aerodrome. The caption calls it a "windmill plane" which is both slightly condescending and, honestly, accurate.

Here's the thing that the 1926 photograph captures so well: the autogyro genuinely looked like a machine from thirty years later. It had no conventional wings. It could fly very slowly without stalling. It could land in an extremely short distance, nearly stopping in midair if the conditions were right. It was safer than anything else in the sky at the time.

The British Air Ministry was interested enough to commission an evaluation. American industrialists came to Hamble to see it and went home to build their own versions under license. By the late 1920s and early 1930s, autogyros were being used for mail delivery, military liaison, aerial photography, and agricultural surveys. Cierva himself flew one across the English Channel in 1928, the first rotary-wing aircraft to make that crossing.

There was a real moment, in the early 1930s, where the autogyro looked like it might define what personal aviation became. Nearly 150 of one model, the C.30, were built and exported around the world, manufactured under license in Britain, Germany, and France. The RAF put them into service. There was an autogyro flying school. Ken Wallis, decades later, would fly one in a James Bond film under the name "Little Nellie," and it would feel both absurdly futuristic and oddly familiar.

An autogyro needs forward motion to work. The rotor only spins, and only generates lift, when air is flowing upward through it, which requires the aircraft to be moving forward. This means an autogyro cannot hover. It can fly very slowly, it can land in a very small space, but it cannot stop in the air.

That one limitation is what the helicopter solved. Igor Sikorsky flew the VS-300, his first practical helicopter, on September 14, 1939, tethered by cables. His archives note, almost as an aside, that Cierva's earlier work on the autogyro rotor was directly part of the technical lineage Sikorsky was building from. The helicopter was, in a real sense, the answer to the same problem Cierva had been working on, solved by a different route. Once that route was open, the autogyro's advantages — simplicity, lower cost, safer autorotation — weren't enough to compensate for the one thing it couldn't do.

The helicopter took over. The autogyro became a niche. The Cierva Autogiro Company pivoted toward helicopter development after the war, was eventually acquired, and dissolved into other firms by 1951.

On December 9, 1936, Juan de la Cierva boarded a commercial airliner at Croydon Airport outside London, bound for Amsterdam. The plane crashed shortly after takeoff in fog, killing everyone on board. He was 41 years old.

He died in a fixed-wing aircraft, in the kind of low-speed, reduced-visibility accident that good pilots had been dying in for decades, the exact category of accident his entire life's work had been designed to prevent. His autogyro, with its freely spinning rotor and its inability to stall, would not have gone down the same way.

Autogyros never fully disappeared. Today they're experiencing a slow resurgence, with modern designs offering improved safety, efficiency, and affordability. You can buy a new one right now, certified by the FAA, for somewhere between $85,000 and $200,000 depending on configuration. They're used for crop monitoring, police aerial patrol, and sport flying. A company called AutoGyro, based in Germany, has been selling them steadily for years and recently reported sales growth it hadn't seen in its first four decades combined.

The photograph in the Evening Star ran on a Tuesday in 1926, credited to Wide World Photo, with a caption calling it "a radical departure from other aircraft." Whoever wrote that wasn't wrong. They just didn't know which direction the departure would go.

See you tomorrow.

– Chris

The Evening Star (Washington, D.C.), July 1, 1926 (Wide World Photo)

Images:
Juan de la Cierva C.6 autogyro — public domain, via Wikimedia Commons
Juan de la Cierva at Lasarte aerodrome, 1930 — public domain, via Wikimedia Commons
Cierva C.12 (G-AAUA), 1930 — public domain, via Wikimedia Commons
Igor Sikorsky — public domain, via Wikimedia Commons

Secondary sources (background/verification only):
Wikipedia — Cierva Autogiro Company; Juan de la Cierva; Vought-Sikorsky VS-300; Cierva C.8
Sikorsky Historical Archives — sikorskyarchives.com
Solent Sky Museum — "Secret Files: Cierva Autogyros"
Royal Aeronautical Society — "The Evolution of the British Rotorcraft Industry 1842-2012"
AeroTime Hub — "The autogyro revival: a new spin on rotorcraft tech"
Introduction to Aerospace Flight Vehicles (ERAU) — "Autogiros and Gyroplanes"