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pitts_pilot(at)bellsouth.
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 Posted: Sat Jul 31, 2010 2:08 pm Post subject: [Bulk] Re: KOSH flight fuel expense |
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Keep in mind that that car will get very poor mileage doing 175 MPH
..... 
Wish there was some way to estimate that MPG at real high speeds.
Linn
Tim Olson wrote:
| Quote: |
Believe it or not, at that 12-14mpg (statute rough number) you'll find
that you can sometimes do even better than that, getting up near
18mpg. It's amazing how efficient you can be. If you want to feel
even better, use the road miles, but flight gallons....because you
cover an "effective distance" when going by air that may save 25% of
the miles or more. It makes the rv-10 compare well with a car or
truck for some trips. I'm going on one soon where the car time is 7
hours but rv10 time is 1.75. Turns into a no brainer on which way I
can do it the easiest.
Tim
On Jul 31, 2010, at 3:37 PM, "Strasnuts" <sean(at)braunandco.com> wrote:
>
>
> Just wanted to put some numbers out for who ever is interested.
>
> I flew Scott Schmidt's RV-10 out to OSH from BTF
> My route was exactly 2133nm there and back (stopped at Tim O)
> My fuel cost was exactly 803 dollars
> My Fuel quantity was exactly 172.19 giving average fuel cost of 4.66
> My flight time was around 13.5 hours there and back
> Running LOP from BTF to OSH first half 12500 and second half ROP at 2000
> Running LOP from OSH to BTF first half at 12500 and second half 10500
>
> --------
> Cust. #40936
> RV-10 SB Fuselage
> N801VR reserved
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=306966#306966
>
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Bob Turner
Joined: 03 Jan 2009
Posts: 885
Location: Castro Valley, CA
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| Posted: Sat Jul 31, 2010 5:39 pm Post subject: Re: [Bulk] Re: KOSH flight fuel expense |
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At these kind of speeds in a car, almost all of the energy is going to air resistance (above the basic inefficiency of the engine, which is roughly constant). Gas mileage will vary approximately as the inverse square of the speed. i.e., a car doing 150 mph will get 1/4 the gas mileage as it would at 75 mph. You should see what an Indy car gets at 200 mph!
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_________________
Bob Turner
RV-10 QB |
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