| While
the combustion value for kerosene is around 42,800kJ/kg, it is
120,000kJ/kg for hydrogen. Hydrogen contains three times as much energy
per kilogram, which in turn means that only a third as much fuel has to
be carried to cover a certain range. This is how the aircraft's maximum
load is boosted. In order to be fair I think
I'll end this little story with some of the bad things about the
exhaust from these hydrogen planes. What on earth? A
very important consideration in using hydrogen as aircraft fuel, is the
possibility of a significant reduction in harmful emissions. During the
combustion of kerosene in today's engines, carbon dioxide (CO2) and
water (H2O) are produced. Additionally lesser amounts of sulphur
dioxide (SO2), carbon monoxide (CO), nitrogen oxide (NOX) and unused
hydrocarbons (HC) are also emitted. The last three substances are
considered to be greenhouse gases. the
use of a so called "Premixed Perforated Plate" reduced nitrogen oxide
emissions by 95 per cent when compared with a modern kerosene motor.
According to Dasa's Dr. Jonny Ziemann this technology is a promising
option for hydrogen fueled engines. He is responsible for the engine
design/modification in the Cryoplane project. This project's jets also
produce water which above 10,000 feet is also a greenhouse gas. Just
how terrible can that possibly be? I
still insist that these remarkable people are amazing. Perhaps they
didn't even realize their own significance in our future. Maybe someday
they'll realize their own history? | 
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