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Can An Airliner Fly On CNG Or LPG

Sun Nov 20, 2011 3:27 am

The question says it all.

I assume it is possible except that it's a bit of a problem to build a tank which can store such huge amounts of gas under high pressure.
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RE: Can An Airliner Fly On CNG Or LPG

Sun Nov 20, 2011 3:30 am

I don't see why not. Stationary turbines often run on gaseous fuels (mostly natural gas). Liquid fuel is nice because it can fit in irregular spaces without being under pressure.
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RE: Can An Airliner Fly On CNG Or LPG

Sun Nov 20, 2011 3:50 am

Perhaps the temp differences at altitude have some quite negative effects? Have no idea though.
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RE: Can An Airliner Fly On CNG Or LPG

Sun Nov 20, 2011 4:41 am

Yes the USSR tried it.



Half the plane was taken up by LNG tank, so it obviously was not a commercially practical idea.
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RE: Can An Airliner Fly On CNG Or LPG

Sun Nov 20, 2011 4:46 am

Probably the reason you don't see it is because the weight of the required tanks erases any benefit derived from the fuel itself...propane tanks aren't light  
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