Here is the Orion Battleship
Designed by RocketmanTan
The Orion Nuclear powered spacecraft was a revolutionary design. Instead of a typical nozzle-type propulsion system, the Orion Spacecraft jettisoned nuclear bombs which would detonate right behind the craft. A shock plate would use the energy from the explosion to propel the ship forward. In 1963, a combat version was developed. The craft was literally an orbiting nuclear outpost. JFK was reportedly so freaked out by the concept that he canceled the project altogether as soon as he saw the prototype model.
This is my first model meant for public use, so it isn't in my typical model format :/