Most people know that zeppelins like the Hindenburg were filled with a flammable gas known as hydrogen, and that the Hindenburg disaster was caused by this gas igniting. Some also know that American airships were filled with the inert gas helium, but that the Zeppelin company was not allowed to purchase helium from the Americans. But what are the other characteristics of these gases, and are there any other alternatives for providing lift to airships? Read More...

Tags: Airships