Hydrogen for Hypersonic Flight

Hydrogen is an excellent fuel because it has three times the high heat of combustion. It's more efficient than kerosene but needs to be stored at a very cool temperature, minus 250 Celsius. One cubic meter of hydrogen, it's just 70 kilograms - not like one tonne full water. The developing aircraft costs billions. Where is the money to complete this project going to come from? You are absolutely right. We want to fly faster. And this is what we need because our life is short. So we want to go.