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Turbine fuel and flight time calculator ?

Enter the tank and hopper sizes, your engine's average fuel use and how much you want left when you land. Add the full-power figure for a cautious worst case.

Usable fuel in the main tank or tanks.
The header tank, if you have one.
From your own flights if you can - mixed flying is often 50-70% of the full-power figure.
Most jet pilots land with 20-30% of the fuel left.
The engine maker's figure at full power.

Result

Fill in the numbers above to see the result.

How it works

Usable fuel = (tank + hopper) × (100% − reserve). Flight time = usable fuel ÷ average use per minute. A 2500 ml tank and 200 ml hopper at 250 ml/min with 25% kept back gives 2025 ÷ 250 = 8.1 minutes.

The timer suggestion rounds down to the nearest 30 seconds. Average use depends on how you fly - long full-power passes use much more than gentle circuits - so the full-power line shows the shortest flight you'd get.

Measure how much fuel goes back in after a few flights and divide by the flight time - that's your real average, and the best number to use here.

Keep every model's numbers in one place RC Flyer Pro is a free logbook and hangar for RC pilots: your models, batteries, flights and flying field, with GPS flight replays in 3D. Start free

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