fuel

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

How can I test a fuel pressure regulator if the car does not start?
Q. I took the car to a mechanic yesterday who said the fuel pump was bad. I'm assuming he said this because there wasn't enough fuel pressure. I am still having the same stalling issues. I have read the fuel pressure regulator can cause this. I have personally replaced alot of other parts to rule out electrical problem. Any advise on how to test the fuel pressure reg will be appreciated. thanks.
Asked by cv7713 - Thu Jul 26 09:43:16 2007 - - 3 Answers - 0 Comments

A. first thing is fuel injection or carburetor? assuming is FI you have to cut the outlet fuel hose and place a fuel pressure gauge there if it is higher than 20psi then is bad your regulator but... it can be different psi depend on the engine and brand of the car buy the repair manual of your car it should say what is the correct psi at the inlet and the outside fuel line is very weird in FI system get a broken fuel regulator (unless you have work on it) they are mechanical and cant be adjusted so... they will work ever at the same pressure if your car dont start is still an electrical issue
Answered by MazdaTech_PR - Thu Jul 26 10:04:28 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