Hyrdogen? Don't we all remember what happened with the last hydrogen vehicles?
If that’s a joke I think it’s gone down about as well as the zeppelin picutred.
BTW, there have been more recent Hydrogen powered vehicles since the Hindenburg.
Within the world of space rackets there were a number of rockets using Hydrogen & Oxygen. The engines within the space shuttle used it, supplied from the auxillary tank under the belly. Before the Shuttle, the second and third stages of the mighty Saturn 5 Moon rocket also used hydrogen and oxygen. (First stage used kerosene & oxygen.
I don't know right now which current rockets still use hydrogen & oxigen.
Off topic but as for education if it comes to the subject of using a potential fuel for another reason than fuel: this is a little known fact that might raise a few eyes.
Hindenburg used hydrogen fuel to create lift and float through the air. The fuel capabilities of hydrogen were not used at all.
But there is another case of what is best known as an energy containing substance being used for something entirely different then unlocking its energy potential.
in 1960, when the Trieste bathyscaphe made its journey to 10.9 km below sea level, it used gasoline as `lighter than water` agent in order to prevent Trieste to sink down and never get back to the surface anymore. Trieste had a large `tank` filled with gasoline that was lighter than water and created the lift within water, despite its weight. It had also iron bullets on board that could be dropped to reduce weight and go upwards. But during the actual dive, the Trieste ran into water layers that were so dense that it didn't got through fast enough thus the crew dumped some of the gasoline to take in water, gain weight and continue the journey.
The potental to be used as power generating agent of the gasoline wasn't used at all during this journey of the Trieste.
Edited by Henri Greuter, 11 October 2018 - 08:48.