NASA's all-electric X- 57 Maxwell has completed another milestone toward its first flight the successful completion of high-voltage testing at NASA's Armstrong Flight Research Center in California. High-voltage testing powers the aircraft is from an auxiliary power supply to test the functionality of the integrated systems under full power. The principal goals of the X-57 Project are to share the X-57 design and airworthiness process with regulators and standards organizations and establish the X-57 as a reference platform for integrated approaches of distributed electric propulsion technologies. NASA Photo by Lauren Hughes/UPI