This blade, number 218, was one of about 250 to make up the Transonic Pressure Wind Tunnel at NASA Langley Research Center. The wind tunnel was built in the 1950s, and torn down in 2012. Dr. Richard Whitcomb used the wind tunnel to design the supercritical wing, which led to improvements in aerodynamic efficiency and reduced fuel consumption. He also used this tunnel to develop the area rule, which enabled aircraft to exceed the speed of sound.
On loan from NASA Langley Research Center