Lockheed Martin has purchased the High Speed Wind Tunnel (HSWT) in Grand Prairie, Texas, from Triumph Aerostructures.
![1427293739735[1]](http://alert5.com/wp-content/uploads/2015/03/14272937397351-500x333.jpg)
Photo: Lockheed Martin
The HSWT and a facility in Missouri are the only two polysonic (subsonic-transonic-supersonic), adjustable Mach-number wind tunnels in the U.S.
Lockheed Martin plans to make investments to improve the facility.