The rocket in question is a nuclear thermal rocket, not a nuclear electric rocket. The 10GW figure refers to waste heat. The reason for pulsing the engine, an

The rocket in question is a nuclear thermal rocket, not a nuclear electric rocket. The 10GW figure refers to waste heat. The reason for pulsing the engine, and the advantage over a normal nuclear thermal rocket is that the heat generated by operating at full power continuously would be unmanageable. https://en.wikipedia.org/wiki/Pulsed_nuclear_thermal_rocket https://en.wikipedia.org/wiki/Pulsed_nuclear_thermal_rocket https://www.euronuclear.org/glossary/pulsed-reactor/ https://www.euronuclear.org/glossary/pulsed-reactor/