(France) Ader Clément @·AIRCRAFTUBE

  • Clément Ader in 1891 Clément Ader in 1891
    Clément Ader in 1891
  • The Ader 649cc<br>3.5hp Motor<br>that motorized the<br>Mignet HM-8 The Ader 649cc<br>3.5hp Motor<br>that motorized the<br>Mignet HM-8
    The Ader 649cc
    3.5hp Motor
    that motorized the
    Mignet HM-8
  • The Avion III at the Salon Aéronautique of Paris The Avion III at the Salon Aéronautique of Paris
    The Avion III at the Salon Aéronautique of Paris
  • French patent 205155 of 19 April 1890 French patent 205155 of 19 April 1890
    French patent 205155 of 19 April 1890
  • The Avion III (1897) The Avion III (1897)
    The Avion III (1897)
  • L'Avion III at the Paris Arts et Métiers Museum L'Avion III at the Paris Arts et Métiers Museum
    L'Avion III at the Paris Arts et Métiers Museum
  • Clément Ader Clément Ader
    Clément Ader
  • Eole III<br>(1897) Eole III<br>(1897)
    Eole III
    (1897)
  • Eole III with<br>folded wings Eole III with<br>folded wings
    Eole III with
    folded wings
  • The Eole III<br>steam engine The Eole III<br>steam engine
    The Eole III
    steam engine
  • "L'Illustration" of 1891<br>(Clément Ader's drawing) "L'Illustration" of 1891<br>(Clément Ader's drawing)
    "L'Illustration" of 1891
    (Clément Ader's drawing)
  • Eole Patent<br>drawings Eole Patent<br>drawings
    Eole Patent
    drawings
  • The monument of the<br>"Plateau de Satory",<br>in France The monument of the<br>"Plateau de Satory",<br>in France
    The monument of the
    "Plateau de Satory",
    in France
  • The Avion III at the Salon Aéronautique of Paris The Avion III at the Salon Aéronautique of Paris
    The Avion III at the Salon Aéronautique of Paris
  • L'Avion III at the paris Arts et Métiers Museum L'Avion III at the paris Arts et Métiers Museum
    L'Avion III at the paris Arts et Métiers Museum
  • Steam engine of the<br>Avion No.II, in 1892<br>(Abandoned) Steam engine of the<br>Avion No.II, in 1892<br>(Abandoned)
    Steam engine of the
    Avion No.II, in 1892
    (Abandoned)
  • 1941 1941
    1941
  • Clément Ader is<br>promoted to the rank of<br>Commandeur de la Légion<br>d'honneur in 1922 Clément Ader is<br>promoted to the rank of<br>Commandeur de la Légion<br>d'honneur in 1922
    Clément Ader is
    promoted to the rank of
    Commandeur de la Légion
    d'honneur in 1922

Clément Ader

Clément Ader (2 April 1841 – 3 May 1925) was a French inventor and engineer who was born in Muret, Haute-Garonne (a distant suburb of Toulouse), and died in Toulouse. He is remembered primarily for his pioneering work in aviation.

The inventor

Ader was an innovator in a number of electrical and mechanical engineering fields. He originally studied electrical engineering, and in 1878 improved on the telephone invented by Alexander Graham Bell. After this he established the telephone network in Paris in 1880. In 1881, he invented the théâtrophone, a system of telephonic transmission where listeners received a separate channel for each ear, enabling stereophonic perception of the actors on a set; it was this invention which gave the first stereo transmission of opera performances, over a distance of 2 miles (3 km) in 1881. In 1903, he devised a V8 engine for the Paris–Madrid race, but although three or four were produced, none were sold.

Development of aircraft

Following this, he turned to the problem of mechanical flight and until the end of his life gave much time and money to this. Using the studies of Louis Pierre Mouillard (1834–1897) on the flight of birds, he constructed his first flying machine in 1886, the Éole. It was a bat-like design run by a lightweight steam engine of his own invention, with 4 cylinders developing 20 horsepower (15 kW), driving a four-blade propeller. The engine weighed no more than 4 kg/kW (7 pounds per horsepower). The wings had a span of 14 m (46 ft). All-up weight was 300 kg (650 lb). On 9 October 1890 Ader attempted to fly the Éole. Aviation historians give credit to this effort as a powered take off and uncontrolled hop of approximately 50 m (160 ft) at a height of approximately 20 cm, (8 in). Ader also claimed credit for getting off the ground in the Éole.

Ader began construction of a second aircraft he called the Avion II, also referred to as the Zephyr or Éole II. Most sources agree that work on this aircraft was never completed, and it was abandoned in favour of the Avion III. Ader's later claim that he flew the Avion II in August 1892 for a distance of 100 m (330 ft) in Satory near Paris, was never widely accepted.

Ader's progress attracted the interest of the minister of war, Charles de Freycinet. With the backing of the French War Office, Ader developed and constructed the Avion III. It resembled an enormous bat made of linen and wood, with a 15 m (48 ft) wingspan, equipped with two four bladed tractor propellers, each powered by a steam engine of 30 hp (22 kW). Using a circular track at Satory, Ader carried out taxiing trials on 12 October 1897 and two days later attempted a flight. After a short run the machine was caught by a gust of wind, slewed off the track, and came to a stop. After this the French army withdrew its funding, but kept the results secret. The commission released in November 1910 the official reports on Ader's attempted flights, stating that they were unsuccessful.

L'Aviation Militaire

Clément Ader remained an active proponent of the development of aviation. In 1909 he published L'Aviation Militaire, a very popular book which went through 10 editions in the five years before the First World War. It is notable for its vision of air warfare and its foreseeing the form of the modern aircraft carrier, with a flat flight deck, an island superstructure, deck elevators and a hangar bay. His idea for an aircraft carrier was relayed by the US Naval Attaché in Paris and were followed by the first trials in the United States in November 1910.

"An airplane-carrying vessel is indispensable. These vessels will be constructed on a plan very different from what is currently used. First of all the deck will be cleared of all obstacles. It will be flat, as wide as possible without jeopardizing the nautical lines of the hull, and it will look like a landing field."

— Clément Ader, L'Aviation Militaire, 1909

Influence

Ader is still admired for his early powered flight efforts, and his aircraft gave the French language the word avion for a heavier-than-air aircraft. In 1938, France issued a postage stamp honoring him. Airbus named one of its aircraft assembly sites in Toulouse after him. Clément Ader has been referred to as "the father of aviation".

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