The EWR VJ 101 was an experimental German jet fighter VTOL tiltjet aircraft. VJ stood for "Versuchsjäger", (German for "Experimental Fighter"). It was to be the basis for a successor to the F-104G Starfighter, but was cancelled in 1968 after a five-year test program. The VJ 101 was one of the first V/STOL designs to have the potential for eventual Mach 2 flight.
Read more about EWR VJ 101: Design and Development, Operators, Specifications (VJ 101C X-2)