How much fuel does a fusion reactor use?

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Decimator
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I'm writing up a Helldiver, a vehicle for transporting non-adapted equipment to the Venusian surface(one of the hypercorps has a research station down there in my upcoming game). The vehicle will use a fusion reactor of sufficient size for active cooling, even on the surface. What I'm wanting to know is approximately how quickly such a beast will burn through fuel.

Arenamontanus
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Re: How much fuel does a fusion reactor use?

I don't have the numbers around, but the total volume of fuel is going to be pretty small compared to the reactor size. So the amount is probably going to be something like the amount needed for the longest possible normal mission times two or three.

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