A Zeppelin is a type of rigid airship named after the German inventor Ferdinand von Zeppelin who pioneered rigid airship development at the beginning of the 20th century. Zeppelin's notions were first formulated in 1874 and developed in detail in 1893. They were patented in Germany in 1895 and in the United States in 1899. After the outstanding success of the Zeppelin design, the word zeppelin came to be commonly used to refer to all forms of rigid airships. Zeppelins were first flown commercially in 1910 by Deutsche Luftschiffahrts-AG (DELAG), the world's first airline in revenue service. By mid-1914, DELAG had carried over 10,000 fare-paying passengers on over 1,500 flights. During World War I, the German military made extensive use of Zeppelins as bombers and as scouts. Numerous bombing raids on Britain resulted in over 500 deaths.
The USS Los Angeles, a United States Navy airship built in Germany by the Luftschiffbau Zeppelin (Zeppelin Airship Company)
Ferdinand von Zeppelin
The first flight of LZ 1 over Lake Constance (the Bodensee) in 1900
Zeppelin LZ 4 with its multiple stabilizers, 1908
A rigid airship is a type of airship in which the envelope is supported by an internal framework rather than by being kept in shape by the pressure of the lifting gas within the envelope, as in blimps and semi-rigid airships. Rigid airships are often commonly called Zeppelins, though this technically refers only to airships built by the Luftschiffbau Zeppelin company.
Construction of USS Shenandoah (ZR-1), 1923, showing the framework of a rigid airship
LZ 1, the first successful rigid airship
The extended Spiess airship in 1913
The British R34 in Long Island during the first ever return crossing of the Atlantic in July 1919