CGSociety hosted a challenge entitled Thrust with a set of specifications for a fighter spaceship. This was my entry, entitled Ceres.
This ship, in my fiction, is mainly an atmospheric fighter with inter-planetary travel capabilities. It can travel to the opposite side of planet Earth in about 45 minutes, so its primary role is rapid deployment to assist risky AO’s for special operations units. It’s able to achieve these speeds by exiting the planet’s atmosphere and making use of a separate engine.
Without ailerons, the craft maneuvers in-atmosphere via 3D thrust vectoring with the main rear thruster, supplemented with maneuvering thrusters placed strategically around the hull of the ship (these work both in-atmosphere and in space with two different outputs). This thrust vectoring also compensates for the lack of large vertical stabilizers usually seen on aircraft, also supplemented by small vertical stabilizers on the tips of the wings. But once in space, the engine nacelle will rotate to facilitate a change in center of mass for the propulsion switch, since the jet engine cannot be used in the vacuum of space.