Long-range nuclear rocket

My design philosophy is the long-range nuclear-powered rocket that scientists now hope to develop, using a small amount of nuclear fuel to generate a lot of propulsion and extremely fast speed. The appearance is similar to that of a normal chemical rocket, but the difference is that the nuclear reactor under the rocket can generate huge energy on Mars in a short time without worrying about the return of fuel. The flight process is also similar to a normal rocket. Similarly, when the split rocket finally reaches Mars, let the former Mars landing capsule complete our dream of landing on Mars. (PS: After the second quarter, it used general chemical rocket fuel.)

Figure 1: Overall rocket

Figure 2: Photo of a nuclear power reactor

Figure 3: Rockets in the second quarter

Figure 4: The third "four-section rocket"

Figure 5: Mars landing capsule