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An airship is a buoyant (" lighter-than-air") aircraft that can be steered and propelled through the air. Unlike aerodynamic ("heavier-than-air") aircraft which stay aloft by moving an airfoil through the air in order to produce lift, airships stay aloft primarily by means of having a cavity (usually quite large) that is filled with a gas that is less dense than the surrounding atmosphere.
In contrast to airships, balloons are buoyant aircraft that go wherever the wind takes them.
Airships are also known as dirigibles from the French dirigeable, meaning "steerable". The term airship is sometimes informally used to mean a machine capable of atmospheric flight. The term dirigible was the more commonly used name for these aircraft in the early days of their history, whereas airship is the more modern term. See also blimp and Zeppelin.
Modern passenger-carrying airships are, by law, now required to be filled with non-flammable helium. However, many small experimental ships still carry hydrogen because of it's cheapness and availability. Until the 1940s, most European airships were filled with hydrogen, which is flammable if mixed in air. American airships have been filled with helium since the 1920s. Some airships are filled with hot air in a fashion similar to a hot air balloon. They are sometimes called "hotships".
Several different kinds of US Navy airships, circa 1930
Airships were among the first aircraft to fly, with various designs flying throughout the 19th century. They were largely attempts to make relatively small balloons more steerable, and often contained features found on later airships. These early airships set many of the earliest aviation records.
In 1784Events January 6 the Turks agree to Russia's annexation of the Crimea in the Treaty of Constantinople January 14 The U. Congress ratifies the Treaty of Paris with England to end the American Revolutionary War February 27 Count of St Germain dies of pneumo Jean-Pierre BlanchardJean-Pierre Blanchard (aka Jean Pierre Francois Blanchard), ( 7 July 1753 7 March 1809) was a French inventor, most remembered a pioneer in aviation and ballooning. Blanchard made his first successful balloon flight in 1784 and flew with Dr. John Jeffries fitted a hand-powered propeller to a balloon, the first recorded means of propulsion carried aloft. The first person to make an engine-powered flight was Henri GiffardHenri Giffard was the inventor of the injector and the steam-powered airship. He was born in France in 1825. On 24 September 1852 he made the first powered and controlled flight in a dirigible, travelling 27km from Paris to Trappes. He suicided in 1882, l who, in 1852Events January 14 President Louis-Napoleon Bonaparte proclaims a new constitution for the French Second Republic. January 17 United Kingdom recognizes independence of the Transvaal Devil's Island penal colony opens February 11 First British public toilet, flew 27 km (17 miles)in a steam-powered airship.
Charles F. Ritchel made a public demonstration flight in 1878Events January Cleopatra's Needle arrives in London January 9 Humbert I becomes King of Italy January 23 Disraeli orders British fleet to Dardanelles January 28 The Yale News becomes the first daily, college newspaper in the United States. January 31 Turk of his hand-powered one man rigid airship and went on to build and sell five of his aircraft.Paul Haenlein flew an airship with an internal combustion engine on a tether in Vienna, the first use of such an engine to power an aircraft. In 1880, Karl Wölfert and Ernst Baumgarten attempted to fly a powered airship in free flight, but crashed.
In 1883, the first electric-powered flight was made by Gaston Tissandier who fit a Siemens electric motor to an airship.
The first fully controllable free-flight was made in a French Army airship, La France , by Charles Renard and Arthur Krebs in 1884. The electric-powered flight covered 8 km (5 miles) in 23 minutes.
In 1888, Wölfert flew a Daimler built petrol engine powered airship at Seelburg.
In 1896, a rigid airship created by Croatian engineer David Schwarz made its first flight at Tempelhof field near Berlin. After Schwarz's death, his wife, Melanie Schwarz, was paid 15,000 Marks by Zeppelin for information about the airship.
In 1901, Alberto Santos-Dumont, in his airship "Number 6", won the Deutsch de la Meurthe prize of 100,000 francs for flying from the Parc Saint Cloud to the Eiffel Tower and back under thirty minutes.