The minuscule X-13 was designed to explore the feasibility of a pure jet vertical take-off and landing (VTOL) fighter aircraft. Efficient and successful during the test, the X-13 proved that jet thrust alone vertical flight was both technically feasible and quite practical. But not practical enough for the military though. The X-13’s tiny size and limited payload and the lacks of engines available to produce a larger, higher powered version soon relegated the concept to the museums.
Two different kinds of boldness here; the radically spartan X-13 versus the gaudily classic stravaganza of the American late 1950s “barges”.
The future was then: