NASA's X-59 "quiet" supersonic jet continues to make its way toward the runway.

The X-59 was designed from the ground up to fly faster than the speed of sound without generating the thunderous sonic booms typically associated with supersonic flight. The 99-foot (30-meter) aircraft features a radical elongated design, which eliminates a front windscreen; pilots instead see what's ahead through an augmented reality-enabled closed circuit camera system that NASA calls the External Vision System, or XVS.

This month, NASA took the experimental aircraft out for a drive, performing what are known as taxi tests. During these tests, NASA test pilot Nils Larson drove the X-59 across a runway at low speeds so crews could ensure the jet's steering and braking systems work as intended. Next, NASA and Lockheed Martin will perform high-speed taxi tests in which the X-59 will accelerate to close to the speed at which it will take off.