Basically the fission material substitutes for the jet burn canister and the rocket chamber. It’s product is intense heat that heats a compressed gas. Fission temperature rises in proximity of fission material below critical mass. Very dangerous stuff as neutrons can penetrate a cement block a yard wide. The special rods prevent fission material exposure to oxygen so radioactive rust won’t get blown out.
By potting the Bell thrusters at opposite extremes. Plasma rockets still needed for fine positioning in desired orbit and to keep ship on course. The plasma rockets for causing and Stopping spin not shown. In the delicate situation of docking and releasing shuttle craft easier Done by stopping ship spin.
The energy is better put to use blasting ice balls because of astronomical higher
Exhaust speed fission heating cannot compete with. The static thrust higher than
Ionic motors but well below one G. More than sufficient for orbital to interplanetary
And back to orbital. The biggest problem is food supply. The Astronauts need food
At their destination hence bases to go to.
My last wheel was too crude. This upgrade explains a little further.
The flying saucer I drew will work based on existing technology and Corona Motor experiments. It’s irrelevant wether Aliens have visited this planet in the recent or distant past with regard to the workability of that saucer. Moreover the turbine can be driven by combustion gases and shift to internal storage by reason the NASA Space Shuttle Rocket of Werner Von Brawn vintage converts only 3 per cent burn into useful thrust. The Turbine is from 60 to 80 per cent effecient and direct shaft vibration to piezo-electric power over 90 per cent Effecient. The Corona Motor 90 per cent Effecient. 60 per cent times 90 per cent times 90 per cent has three per cent beat by a large margin. Even more it gets a substantial height and speed from atmospheric gases it does not have to carry internally Hense lighter. Nuclear power is for past orbital as an option.