The fragile monoplane that made the first powered flight across the English Channel. Built from wood, wire and fabric, it became one of the first genuinely practical aircraft of the pioneer era, with hundreds sold to early civilian aviators, flying schools and fledgling air arms. Developed by Blériot Aéronautique.
The fragile monoplane that made the first powered flight across the English Channel. Developed by Blériot Aéronautique.
Photo: Julian Herzog, via Wikimedia CommonsSee Specifications for full detail.
The Blériot XI is a French single-engine monoplane designed by Louis Blériot and Raymond Saulnier in 1908-09. On 25 July 1909, Blériot flew one across the English Channel in 37 minutes, becoming the first person to cross it by heavier-than-air aircraft and winning a £1,000 prize offered by the Daily Mail.[1]
The flight made the Blériot XI the world's first mass-produced aeroplane, with 800-900 built for sportsmen, flying schools and early military air arms. Its layout - tractor propeller, monoplane wing, tail behind the pilot - became the template most conventional aircraft still follow.[2]
Blériot was aviation's great stubborn amateur: a headlamp manufacturer who poured his fortune into eleven successive flying machines - ornithopters, box-kite biplanes, tail-first canards - crashing most of them personally. Model XI, designed with engineer Raymond Saulnier in 1908, was the survivor's synthesis: a wire-braced monoplane with the engine in front and wing-warping lateral control in the Wright manner.[1]
Its unlikely saviour was the engine: the three-cylinder Anzani produced barely 25 hp and cooled itself badly, but it was light and just reliable enough - on the Channel morning, famously, a providential rain shower may have cooled the overheating cylinders mid-crossing. Marginal power, perfectly timed.[2]
The Daily Mail's £1,000 prize had turned the Channel into aviation's first great arena. Blériot's rival Hubert Latham had already ditched in the sea once; on 25 July, with the weather briefly clear, Blériot took off from Les Baraques at 4:41 a.m., left the escorting destroyer behind within minutes, and flew for a stretch with no land, no ship and no instruments in sight - 'alone, isolated, lost in the midst of the immense sea', as he described it.[3]
Thirty-seven minutes after France, he sideslipped through gusts onto Northfall Meadow by Dover Castle, smashing the undercarriage and propeller in a landing he cheerfully called adequate. The world's reaction was instant and geopolitical: if a hobbyist's 25-horsepower machine could cross the Channel, fleets and fortresses guarded nothing above sea level. Orders for the XI began within days - over a hundred within weeks.[3]
The XI is the conventional aeroplane's rough draft: tractor engine, monoplane wing, aft tail with elevator and rudder, main gear forward and tail-skid behind, pilot at the balance point. Almost every conventional aircraft built since shares this basic configuration.[2]
Construction was bicycle-shop honest: ash and bamboo longerons, wire bracing everywhere, rubber-cord shock absorbers on castoring wheels, fabric covering only what needed it (early machines left the rear fuselage bare-boned). Wing-warping demanded constant, physical flying - the XI rewarded strong wrists and punished inattention.[1]
Success industrialised Blériot overnight: his factory built 800-900 XIs in countless variants (more powerful Gnome rotaries, two-seaters, floatplanes), his flying schools trained a generation of pilots, and record-setters flew XIs first over the Alps (Geo Chavez, 1910, fatally on landing) and across half the world's firsts. Harriet Quimby became the first woman to fly the Channel in one in 1912 - her feat drowned in the news cycle by Titanic.[1]
The XI even went to war twice before the World War - Italian machines over Libya in 1911 flew history's first military aeroplane reconnaissance and bombing - and when 1914 came, French, British and Italian squadrons took XIs to the front as artillery-spotters and trainers until faster types displaced them within the year.[1]
The Channel crossing did for aviation what no demonstration flight had: it converted the aeroplane from marvel to instrument, with strategic consequences legible to every government by breakfast. Blériot's company prospered into the SPAD fighters of WWI; his layout became simply how aeroplanes look.[2]
The original crossing machine hangs, still fabric-and-ash, in the Musée des Arts et Métiers in Paris[4], and airworthy XIs - including some genuine 1909-1914 originals, the oldest flying aeroplanes on Earth - still putter over vintage rallies, crossing the Channel again on anniversaries as the calmest possible reminder of the morning England stopped being an island.[2]
Original and reproduction Blériot XIs occasionally fly at heritage air displays in France and the UK, particularly around Channel-crossing anniversary events each July, but are not routinely tracked by modern transponder systems.
| Performance | |
| Max Speed | 41 kn (47 mph / 76 km/h) |
|---|---|
| Cruise SpeedCruise Speed — The economical speed an aircraft sustains for the bulk of a flight - lower than maximum speed, chosen for the best balance of time and fuel burn. Glossary → | ~40 mph |
| RangeRange — How far an aircraft can fly without refuelling. Quoted figures vary with payload, speed and reserves - see also ferry range and combat radius. Glossary → | 90 mi on internal fuel |
| Service CeilingService Ceiling — The highest altitude at which an aircraft can still climb at a useful rate (typically 100 ft/min). Above it, the air is too thin to keep climbing meaningfully. Glossary → | 3,280 ft practical operating altitude |
| Airframe & Weight | |
| Wingspan | 25 ft 7 in |
| Length | 26 ft 3 in |
| Height | 8 ft 7 in |
| WeightMTOW — Maximum Take-Off Weight - the heaviest an aircraft is certified to be at the start of its take-off run, including fuel, crew, payload and the aircraft itself. Glossary → | empty: 507 lb; loaded: 661 lb |
| Power & Payload | |
| Engines | 1 x Anzani 3-cylinder fan-type air-cooled engine, 25 hp (Channel-crossing aircraft); later production used more powerful Gnome rotary engines up to 50 hp |
| Crew | 1 (pilot, and some later variants carried 1 passenger) |
| CapacityPayload — Everything an aircraft is carrying that isn't the aircraft or its fuel: passengers, cargo, or weapons. Payload and fuel usually trade off against each other. Glossary → | N/A - single-seat sport/reconnaissance monoplane; two-seat trainer variants existed |
| Program & Service | |
| Manufacturer | Blériot Aéronautique |
| Origin | France |
| First Flight | January 23rd 1909 |
| Service Entry | July 25th 1909 |
| Retired | 1914 |
| Number Built | 900 |
| Unit Cost | ~$2,000 in 1909 dollars (roughly 10,000 French francs; about $74,000 in 2026 dollars, adjusted for CPI inflation) for an early production example |
5 notable events involving the Blériot XI, 1910 to 1912. 5 deaths are recorded across the 4 of these with a figure listed. Curated rather than exhaustive.
Pioneer French aviator Léon Delagrange was killed near Bordeaux when the wing of his Blériot XI failed in flight, an accident attributed to his fitting an overpowered engine that overstressed the airframe.
Former racing driver turned aviator Hubert Le Blon was killed crashing his Blériot XI at San Sebastián, Spain, becoming the type's second recorded fatality after Delagrange.
Jorge Chávez, having just completed the first flight across the Alps in a Blériot XI, crashed on final approach into Domodossola, Italy, and died days later of his injuries. The accident prompted manufacturers to strengthen the wing spars.
Following a string of Blériot XI wing failures, the French military temporarily banned monoplane types from service pending a redesign of the wing bracing wires.
America's first licensed female pilot and her passenger were thrown from her Blériot XI during an unexpected pitch manoeuvre at low altitude over Dorchester Bay, Boston, and both fell to their deaths; the aircraft itself glided down largely intact.
| XI (Anzani) | The original Channel-crossing configuration with the 25 hp Anzani fan engine. |
| XI Gnome | Later production fitted with the more powerful and reliable Gnome rotary engine, widely used for flying training. |
| XI Militaire | Reinforced reconnaissance variant adopted by the French, British and other early air arms at the outbreak of WWI in 1914. |
| XI-2 | Two-seat tandem trainer variant used to train a generation of early military and civilian pilots. |
Source: Vintage Aviation News
Numbered as cited in the Overview article. Click a reference to see where it's used.
Additional reading you might find interesting...
PlanesDB entries are living documents - this is how this one has evolved, and who helped make it happen. Spotted something out of date? Help update it.
