MX-EXP Fission Generator

Unlike the other nuclear reactors, the M-EXP is more of a large RTG, and is unlocked after the PB-NUK Radioisotope Generator. It is enough to power low-end ion engines, or even mid-range single engines if used in groups. It is optimized for use with four GR-3-MINI Conformal Heat Radiators.

Description
A small experimental fission generator using Stirling pistons and radioactive decay to generate a few kW of electricity. Any bigger than this and we'll need a proper reactor!

Changes
0.1.0
 * Uranium/EnrichedUranium capacity rebalanced