A catalogue of CGU aircraft, top view.
Scale is six pixels : one meter.
The most common type of propulsion plant is the Nuclear Aircraft Engine; aircraft requiring high performance and long loiter times and range will have a miniature nuclear reactor installed, the heat of which is used to ignite the compressed air in a turbofan, rather than using jet fuel. This eases the strain of logistics significantly.
Some aircraft, however, still use conventional turbofans; lower bleeding-edge performance requirements are exchanged for rugged reliability in attack and reconnaissance drones as well as some other aircraft. A couple aircraft used high-performance turboprops for power, but these are not often used outside of special duties.
A note on naming and numbering conventions- all of them are named after some kind of shark or ray; typically, "S" as a prefix to the primary mission designation indicates space-usability, and as such are almost always Navy and Marines aircraft. Everything else is Army and Marines.
Most manned aircraft can theoretically be auto-piloted by a VI or brick AI program and integral VI's perform most ECM on normally-manned aircraft.