lightsaber wrote:The dirgebles were hard to set on fire, until they weren't. Hydrogen is the smallest molecule. The handling costs are very high in cryogenic or gas form
I use hydrogen to "cheat" and start any fire as no explosives permit required and it has the broadest flamability range.
One advantage, super easy lean burn combustors.
Range will plummet. I hope for fuel cells powering on wing ducted propellers ( faster cruise, less noise). I think methane fuel cells and then hydrogen.
15 years in the future us industry talk for maybe never. 15 years away means big problems to be solved by someone else.
If we started today, we could have one regional fuel distribution network in 12 years.
As a combustion Engineer, it scares me how blase people are on hydrogen safety. When we buy in quantity, the same protocols as moving really dangerous stuff must be followed.
Do they allow trucking cryogenic hydrogen? We always get it by rail for safety as the required safety cage weighs over 80,000 pounds (the maximum weight for a truck)!
This! I work with launch vehicle design and combustion as well, and hydrogen can cause headaches.