What fuel will airplanes run on once fossil based fuels are exhausted?
Q. Cars have options of bio fuels and electricity.. Ships have nuclear options... But what fuel option does an airplane have? We hear of airline fleets expanding and newer, better and bigger airports being built all the time, but is there an eternal source of jet fuel?
Asked by remyt69 - Tue Apr 24 07:29:03 2007 - - 21 Answers - 0 Comments

A. Sorry if this answer is too long...but its the only way to describe it... My guess is that when things start to get tight there will be two options for aircraft and they will utilize both... First is ethanol... farm high sugar content crops... ferment them to convert to ethanol... a few additives and you've got some pretty good avgas. (Of course biofuel could work good for jet fuel too!) Second is solar energy... planes that have demonstrated this have been light in weight, with the majority of their weight actually being solar cells... Also because the cells are rigid and straight the wings on the plane were more "rigid" on top. They didn't have that nice curve that generates the most lift. Solar companies are now developing solar cells… [cont.]
Answered by Ryan D - Tue Apr 24 11:31:01 2007

What were the main sources of fuel before the discovery and use of fossil fuels?
Q. What are their historical origins? What was the development of man's ability to harness the pre-fossil fuel sources of energy? How did the amount of energy harnessed from these sources compare to what we use today for fuel?
Asked by LibbyLu - Tue Apr 20 17:21:41 2010 - - 4 Answers - 0 Comments

A. Don't forget whale oil, 18 century whaling, and their near extinction.
Answered by Ratz - Tue Apr 20 18:52:19 2010

Can I get better fuel economy on a diesel by installing a less restrictive air intake and larger exhaust?
Q. I have an 06 F250 with a 6.0 L diesel and don't get much fuel economy. I don't want to put a chip in it because I don't think it wil;l help the fuel economy and may void the warranty.
Asked by Jerry C - Sat May 17 19:58:22 2008 - - 5 Answers - 1 Comments

A. A turbo-back exhaust will help with economy some. It will also lower exhaust temperatures (something important to watch on a modified diesel, even a stock diesel in my opinion). The intake will help some as well. Remember, the truck is forced induction, so it is sucking a lot more air than a naturally aspirated motor would. A mild tune chip could help with economy as well, or an adjustable chip on a lower setting. I run an '04 6.0L with the Edge Juice w/ Attitude controller, The truck is always run on setting #2 'Tow-Mode'. My boost pressure doesn't get radical, but I can bring the EGTs to unsafe levels on a long pull on a hot day (factory exhaust). The chip avg me 1.5mpg increase on setting #2. #1 is the economy mode but I can't see a… [cont.]
Answered by boogie_4wheel - Sat May 17 21:38:58 2008