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06-19-2012, 07:16 AM
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Join Date: Jan 2007
Location: St Mary's, Georgia
Posts: 135
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Natural gas
Does anyone kknow of any research or pratical applications of natural gas being used in aircraft for fuel?
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Dustman
RV3B
St Marys Georgia
Dues paid 11-11-2011
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06-19-2012, 07:26 AM
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Join Date: Feb 2010
Location: Gardnerville Nv.
Posts: 2,828
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I know that the CNG in our fleet gets about 1/2 the MPG
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7A Slider, EFII Angle 360, CS, SJ.
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06-19-2012, 07:49 AM
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Join Date: Jun 2006
Location: 8I3
Posts: 3,562
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How about the cost per mile of the fleet?
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Please don't PM me! Email only!
Bob Japundza CFI A&PIA
N9187P PA-24-260B Comanche, flying
N678X F1 Rocket, under const.
N244BJ RV-6 "victim of SNF tornado" 1200+ hrs, rebuilding
N8155F C150 flying
N7925P PA-24-250 Comanche, restoring
Not a thing I own is stock.
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06-19-2012, 07:50 AM
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Join Date: Aug 2010
Location: Rochester, NY
Posts: 174
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I believe storage is problematic as well. The tanks are heavy.
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06-19-2012, 07:57 AM
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Join Date: Oct 2006
Location: Garden City, Tx
Posts: 5,120
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I work in that world, it's not gonna happen for aircraft. The energy density is too low and the storage weights/pressures are too high.
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Greg Niehues - SEL, IFR, Repairman Cert.
Garden City, TX VAF 2020 dues paid 
N16GN flying 700 hrs and counting; IO360, SDS, WWRV200, Dynon HDX, 430W
Built an off-plan RV9A with too much fuel and too much HP. Should drop dead any minute now. 
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06-19-2012, 12:20 PM
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Join Date: Mar 2007
Location: Sonoma County
Posts: 3,821
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PROPANE!! Propane is 4.2# per gallon, no road taxes, less than 1/2 the price of 100LL and has an octane rating of over 100. Burns clean. Oil stays clean. No carbon build up on pistons, plugs or valve stems. No fuel pump needed.
The main problem is the 250psi. working pressure tanks needed.
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VAF #897 Warren Moretti
2019 =VAF= Dues PAID
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06-19-2012, 12:53 PM
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Join Date: Jan 2007
Location: St Mary's, Georgia
Posts: 135
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COOKING WITH PROPANE
Just more thoughts from a idle mind. To get the weight down on propane fuel tanks could carbon fiber be used? It would be light weight and strong no idea, if the carbbon fiber and propane are compatable. On the issue of pressure the air tank on my sons air gun is pretty darn high and he was pretty rough with it and it never blew up with him perhaps something of similiar construction might work.
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Dustman
RV3B
St Marys Georgia
Dues paid 11-11-2011
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06-19-2012, 01:18 PM
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Join Date: Feb 2007
Location: Walnut Creek CA
Posts: 513
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Its all about the carbon
You can get a rough estimate of the energy per gallon by comparing the carbon atom ratios of various fuels. Propane is C3H8 and gasoline is C8H18. This means youll get a little less than half of the energy out of a gallon of propane than you would gasoline. This is also why cars get better mpg on diesel C8H18 vs C12H26. Alas there is no free lunch.
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Rob Holmes
www.myrv3.com
N59LG
The minimum number of planes one should own is one. The correct number is n+1, where n is the number of planes currently owned. This equation may also be re-written as s-1, where s is the number of planes owned that would result in separation from your partner.
- Veluminati
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06-19-2012, 01:39 PM
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Banned
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Join Date: Jun 2012
Location: Florida
Posts: 34
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As a backup in an emergency in case you run out of gas you can always connect the filler hose to your rear gas expansion valve and provide enough gas for landing. Just make sure you had your beans before departure.  |
06-19-2012, 01:56 PM
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Join Date: Feb 2005
Location: Huskerland, USA
Posts: 5,862
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Quote:
Originally Posted by gasman
PROPANE!! Propane is 4.2# per gallon, no road taxes, less than 1/2 the price of 100LL and has an octane rating of over 100. Burns clean. Oil stays clean. No carbon build up on pistons, plugs or valve stems. No fuel pump needed.
The main problem is the 250psi. working pressure tanks needed.
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+1
Gasman knows his gas!
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RV-7 : In the hangar
RV-10 : In the hangar
RV-12 : Built and sold
RV-44 : 4 place helicopter on order.
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