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>> No.11679780 [View]
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11679780

>>11679748
>Mass ratios in the 80-90%
I'm assuming that represents the propellant and not everything else. Unless I got those flipped around.
>H2O offers the best thrust to volumetric flow rate of any common propellant
Couldn't you just turn an H2O NTR into an LANTR to produce more thrust and drop the flow rate, saving more propellant?

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