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FSXA Stopping fuel dump when down to set fuel weight

D

DBushell

Messages
150
Tried last night to get this working.

I have a working vc switch for fuel dump, but no matter which way I tried I could not get the fuel dump to stop when the remaining total fuel was down to 5000 lbs.

Has anyone else had any success with stopping fuel dump with set criteria. It should be simple, but after a few hours of modifying my code I could not get it to function!

David.
 
This might work:

Code: 
(A:FUEL TOTAL QUANTITY, gallons) (A:FUEL WEIGHT PER GALLON, pounds) * 5000 <=
(A:FUEL DUMP SWITCH, bool) and
if{ (>K:FUEL_DUMP_TOGGLE) }
 
Thanks, that works perfectly. Why is it that the 'fuel weight per gallon, pounds' needs to be included if the gauge is basing it's control around total fuel weight? Is that the only way that it knows you're talking about pounds rather than gallons??
 
Pounds denotes a weight. Gallons are volume and the weight depends on density or fuel weight per gallon.
Simple as that, units have to be consistent.
Roy
 
Oh I see - I was originally trying with (A:FUEL TOTAL QUANTITY, pounds) - but that makes sense. I'd never thought of Gallons being volume rather than weight, but I realise that the volume can change with temperature.
 
FS does all its fuel calculations in gallons, unfortunately. That's why you will only get a reliable value if you request it using a unit of volume.
 
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