  We present a theoretical analysis of an innovative combination of a nuclear
thermal and electromagnetic (EM) thruster. Specifically, we scrutinize the
thermodynamics involved in integrating a nuclear thermal reactor with an
expansion turbine. This configuration facilitates the generation of substantial
electrical power, which is then utilized to power an EM thruster (similar to an
afterburner). This process results in a notable increase in the ISP from 900 to
1200 without the necessity for thermal radiators. Furthermore, by incorporating
thermal radiators, the ISP can be further increased to approximately 4000. This
enhancement allows for a significant reduction in transit time to destinations
such as Mars and the outer and inner planets. We provide several examples to
illustrate the potential applications of this innovative propulsion system.
