The Delta Trianguli Aliens #1024 are currently annoying the hell out of me, they keep kiting my ships with their "Van Den Hoek" class ship, which fires nuclear missiles. They are triple the speed of my ships, and they actually go about 1 km/s faster than my ships just to keep the lead. My ships's design overview shows this engine:
Magneto-plasma Drive E0. 8 (26) Power 200 Fuel Use 8% Signature 200 Armour 0 Exp 1%
Currently, all of the engines together generate 5200 power, which is not nearly enough to catch up to these bastards. My question, how do I get the next tier of engine, if there is one? What tech is required to "unlock" them on the research menu? If not, how do I go about making my engines strong enough to catch up to these enemies?