Ethanol and Piston Aircraft
Could Ethanol be used in Piston Aircraft? The answer is...it depends. It depends on how "clean" (contaminant free) your Ethanol is. Ethanol has sufficient energy for most aircraft (the reason it is used by Top Fuel Dragsters), but Ethanol's "burn rate" can be SEVERELY affected by altitude. Ethanol binds with water which can create combustion issues. This is actually easier to do at higher altitudes, so you can see the problem with Ethanol in aircraft.
Any equally powerful, BUT FAR MORE DANGEROUS, fuel for such aircraft is Methane Gas. Methane can also be used in jets (and its cousin, Propane, can be easily substituted in for liquid fuels in ALL Diesel and Kerosene engines).
And let's not forget that the German's made great use of hydrogen Peroxide as a jet fuel during WW2.
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