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Mach 5 + ~300 passengers = ZERO EMISSION!
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How specific do you have to be?
If the US makes the best 4-passenger 6-cylinder passenger car in the world, chances are they won't be horribly out of their depth making the best 5-passenger 4-cylinder passenger car in the world. While there are certainly differences between military and civilian supersonic tech, a LOT of it transfers. Otherwise every single time they painted their plane a different color or added an extra row of seats they'd have to start from scratch.
LordMorpheus
Diamond Member
this engine uses hydrogen as the combustible heat source in the combination turbojet/ramjet/scramjet engine.
The engine is basically the same thing as is found in the SR-71, just using a different fuel.
Normal jet fuel does not burn fast enough to use in a scramjet (you get no power if combustion happens after the fuel/air mixture has already exited the engine), and this hydrogren compound might burn faster.
JulesMaximus
No Lifer
You naysayers do realize that it currently takes about 22 hours to fly from London to Sydney right? Reducing that to 4 hours is cutting that by almost 6. I'm all for cutting travel time by freaking mindblowingly enormous chunks. :thumbsup:
JulesMaximus
No Lifer
Admit it, everything looks like a penis to you.
Goosemaster
Lifer
also, iirc it was the shell of the Hindenburg that made it go up in flames...er..go down...
NOx is created when nitrogen and oxygen are both present in high temperature environments, such as a car engine, or this jet. If you're not running exactly stoichiometric, you either have an excess of oxygen or an excess of fuel. If it's too much fuel, you're just wasting the stuff. If it's too much oxygen, you're creating NOx, which certainly counts as an "emission". In cars we have a catalytic converter to reduce the NOx that is created, but this simply isn't going to happen with a jet.
Note that this isn't any different than current jet engines, but presumably at a higher altitude and more NOx would be created per passenger-mile.
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