KSP 1.12.x Kerbal Atomics [1.3.3]  Last Updated January 22, 2022 This part pack is designed to provide some new nuclear thermal rockets for your spaceship-building pleasure. There are eight new engines, one in the 3.75m size class, four in the 2.5m size class, two in the 1.25m size class and one in the 0.625m size class. They are fuelled with LiquidHydrogen, and in some cases can use Oxidizer to boost their thrust at the cost of specific impulse. Liquid Hydro