As soon as aircraft (and that includes airships and blimps) were capable of carrying bombs. There were many air raids in WWI.
The most famous airships are Hendenburg and Zeppelin.
Airships do use gas, to provide lift.
Airships are usually the shape of a oval. They look like blimps. Airships are usually filled with helium to keep them afloat.
Because he was a military general and because he had a passion for airships and because he was an aeronautical theorist.
the gas that helps airships is i hate you wikianswers.com
Hydrogen used to be used in airships.
Curly's Airships was created on 2000-10-05.
Dirigibles, also known as airships, were invented in the late 19th century. The first successful dirigible was created by Henri Giffard, who flew his steam-powered airship in 1852. However, the development of more practical and widely used dirigibles occurred in the early 20th century, notably with the introduction of the Zeppelin airships by Ferdinand von Zeppelin starting in 1900.
Hydrogen airships can vary in size, but most commercial airships are around 200 to 250 feet in length. However, historical airships like the Hindenburg were much larger, at approximately 800 feet long.
gas is still used in airships to provide lift.
Hydrogen and helium are two elements that are kinda-sorta interchangeable in airships.