NASA Glenn Keeps X-57 Cool

Those very small, yet highly efficient motors will produce a tremendous amount of power, but with power comes heat, and too much heat can cause issues for an aircraft. Adding a cooling system to the X-57's sleek design would add bulk and require design changes that could negatively impact the aircraft's performance.

To deal with the heat problem, engineers at NASA's Glenn Research Center devised a custom-designed "skin," or nacelle, around the aircraft's motor electronics to significantly cool them without changing the aircraft's shape or design.

This new cooling nacelle design - the aluminum section seen behind the nose cone in the image - was proven during a recent wind tunnel test where engineers subjected one of the X-57's motors to various simulated flight conditions.

With testing now complete, the design information will be sent to engineers at NASA's Armstrong Flight Research Center where they continue to work toward the X-57's first flight.