Why don't locomotives use high-speed fueling systems?

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Why don't locomotives use high-speed fueling systems?
Posted by aegrotatio on Friday, June 15, 2018 12:08 PM

Why don't locomotives use high-speed fueling systems like airliners do?

 

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Posted by BaltACD on Friday, June 15, 2018 12:59 PM

aegrotatio
Why don't locomotives use high-speed fueling systems like airliners do?

4000-5000 gallons per locomotive in 10 minutes doesn't equate to the fill speed of your local gas station.  Tank Truck filling is somewhat slower but a 10000 gallon tanker will be emptied in less than 30 minutes when fueling locomotives.

How many gallons do aircraft get fueled with and how fast is it accomplished?  Commercial aircraft are rarely filled to full capactity except for overseas trips as a excessive amount of fuel still onboard increase the risks in landing a heavier craft.

         

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Posted by CandOforprogress2 on Friday, June 15, 2018 1:02 PM

Collinwood have timed refuel at 7 min 29 seconds

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Posted by Backshop on Friday, June 15, 2018 6:48 PM

BaltACD

How many gallons do aircraft get fueled with and how fast is it accomplished?  Commercial aircraft are rarely filled to full capactity except for overseas trips as a excessive amount of fuel still onboard increase the risks in landing a heavier craft.

 

The main reason airliners don't carry extra fuel is because it costs money to carry fuel that you don't need when you could add more cargo.  You do carry a safety margin in case you have to divert or go to a lower altitude, though.  My brother has flown for a major for 20 years and he said that he's never had full tanks.
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Posted by Shadow the Cats owner on Friday, June 15, 2018 10:18 PM

Also diesel has a problem with foaming up when poured from the top down into other diesel.  Planes normally fill from the bottom up from what I've seen unless it's an old warbird like a P51 or B25 or gas powered in general. 

 

Our tanks on our fleet foam even if half full and we carry 150 gallon tanks total.  Just imagine 5k gallons foaming up it does happen even the best additives can't stop it all. 

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Posted by blue streak 1 on Saturday, June 16, 2018 12:08 AM

This thread assumes that aircraft fueliing is faster.  It isn't so.   The aircraft fueling hose nozzles are much larger in diameter.  But fuel velocity is lower thru the nozzles.   6000 gallons into an aircraft with single point takes about 30 minutes .  Large aircraft use at least 4 fuel intake points that speeds up fueling but I've seen a 747 take over an hour to fuel for trans pacific flights. 

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Posted by Firelock76 on Saturday, June 16, 2018 9:02 AM

Hey, how about track pans like the PRR, NYC, and the Jersey Central used back in the steam days, except instead of filling 'em with water fill 'em with diesel fuel?

No?  Oh well.  Just a thought.

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Posted by SD70Dude on Saturday, June 16, 2018 9:49 PM

That would certainly get rid of the weed problem!

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Posted by aegrotatio on Saturday, June 16, 2018 11:14 PM
It really *is* faster than conventional fueling. There was an article in Trains Magazine in which a vendor was not being successful marketing an arliner-style rapid fueling technology. The barrier to adoption had to do with the cost and logistics of installing the high-speed fuel nozzle on the locomotive and, to a lesser extent, installing high-throughput pumps on mobile tankers and fueling racks.
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Posted by Dmacleo on Saturday, June 30, 2018 2:24 PM

a/c also use a pressure refuling system that feeds multople wing, center, aft, etc tanks. the 7-10 min a 5000gallon tank takes to fill is cost effecient over the valving/sensors/etc of a pressure refule/defual (yeah system used to remove fuel also) system.

worked airline parts and records many years, crap is expensive as hell.

 

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