The stated goal is "to design, build, and fly an X-plane to demonstrate the key technologies ... for the lift fans to get to work. But the full-size vision here is more than twice that size ...

DARPA has selected Aurora Flight Sciences to build a full-scale X-plane to demonstrate the viability of using ... foot wingspan and be capable of speeds up to Mach 0.7. Its weight, size, and speed – ...

Boeing and its research subsidiary Aurora Flight Sciences have unveiled a new high-speed X-plane that could revolutionize ... Aurora expects to launch the full-scale 7,000-pound X-65 demonstrator ...