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If your fiscal and mass budgets have to include a fusion reactor, but that reactor is net-negative on energy - then why not replace the whole thing with some ch
by bell-cot 2y ago
If your fiscal and mass budgets have to include a fusion reactor, but that reactor is net-negative on energy - then why not replace the whole thing with some cheaper & lighter way of converting your input power to thrust?
- s1artibartfast 2y agoI suppose that they mean break even on captured electrical energy. The major challenges with Fusion power is containing and harvesting the released energy. Rocket engines just care about reaction forces, so you are fine shooting your fusion products out the back end into space.