A launch platform that holds a plane with a rocket booster on the bottom of the plane. The angle and direction of the launch can be changed by rotating the platform. It can be a placeable structure or a movable vehicle.

could also be turned into the launch systems on aircraft carriers

This is for sure a no-go. The physics system for planes is already wonky enough. The last thing I need are attachments that provide forces the system isn't expecting. Besides, aircraft carriers will never be a thing. Far too laggy and complex to build, plus there's no way to get planes to land/stay on them.