sebastian11

make a working jet with the J-90 Turbofan engine as the main part, so add either a drone core, or a inline cockpit. Add a tail fin, A fuel tank and landing gear for the runway. and if it is Manned by a kerbal add safety precautions, e.g. parachutes launch escape system, or a strong decoupler. Lastly if you are in science mode it must have at least 1 land scanner and relay dish . If you want you can even add a airbrake just in case!