Hydrogen can also serve as fuel for internal combustion engines, but unlike with fuel cells, will produce tailpipe emissions and is less efficient. Learn more about fuel cells. The energy in 2.2 pounds (1 kilogram) of hydrogen gas contains about the same as the energy in 1 gallon of gasoline. Because hydrogen has a low volumetric energy density, additional steps are needed to store enough hydrogen onboard fuel cell vehicles to achieve the driving range of conventional vehicles.
Wiktionary (0.00 / 0 votes) Rate this definition: zeppelin (Noun) A type of large German dirigible airship of the early 20th century designed to carry passengers or bombs. Zeppelin (ProperNoun) A German manufacturing company, famed for building the zeppelin airships. Origin: Named after Ferdinand, Count von Zeppelin.
A zeppelin is a lighter-than-air vehicle which has an internal frame. Bags are used to hold hydrogen or helium to provide lift. These differ from dirigibles, which have no int â¦ ernal frame, and are simply a large gas bag. The Hindenburg was a zeppelin which crashed and burned at Lakehurst, New Jersey. The Hindenburg was the ulitmate of zeppelin designs built as a propoganda tool for the Nazi leader Hitler. It crashed in 1937, just prior to WW2. The US Navy had built Zeppelins before WW2 but the idea was scraped after several accidents. Now, in 2000, designers are again studying ways to use airships to carry passengers and cargo.