Re: Is a future non-petroluem based aviation propulsion system possible?



drydem wrote:
Dan Bloomquist wrote:

drydem wrote:


A fun question... .
============

If and when the world runs out of petro/oil,
what do you think the majority of airplanes and/or heliocopter will
fly on?

1) they will fly on ethanol based renewable biofuels.
2) they will fly on rocket-like fuels, e.g. hydrogen.
3) they will fly on fuel extracted from coal.
4) they will fly on human power (e.g. pedaling).
5) they will fly on a fuel based on ___________________
(fill in the blank, e.g. nitroglycerin).


Where is the fun in this? Did you mean dis'fun'ctional?
You must be a typical human ass if you have children...


The fun part comes from using your imagination. :-)

The world demands 175 quads of liquid
fuels. By 2030, (EIA), the world will demand 245 quads. A tenth of a
quad from crop fuels is a huge endeavor. Crop fuels are meaningless.

In today's dollars it would be $60 billion per mb/d of infrastructure for CTL. When do we start? When more expensive resources double the cost/gdp?

4 & 5 are just plain silly.

Just the numbers. I can imagine I can fly but I'm not jumping from a building. I don't think it fun to think that my son/grandson will live in a mad max world.

.