It has been some time since I sat through basic aircraft dynamics, so I hope to check some conclusions about the topic. Clearly rockets and missiles have maintained stable flight via gimble of the engines. My understanding has been that designing, say, jet aircraft in this way (i.e. forgoing control of flight surfaces) has not been feasible because doing so at cruise speed sharply change the angle-of-attack and stall the compressor air flow (among other difficulties). Now however the possibility of non-air breathing, in the atmosphere propulsion looms. In such a future, can the ubiquitous big tail and elevators and their drag be discarded, replaced by gimbled propulsion? It seems to me that practically the answer is still no, because a fixed wing aircraft with no tail would have the center of pressure (CP) well forward of the center-mass, unlike a wingless rocket, and then in the event of propulsion failure, even for a moment, such an aircraft would become violently unstable.