X-15 CFD Images on Postage Stamps
NASA Langley Research Center performed the CFD calculations used to produce the images on the stamps. The aim of the CFD calculations, performed in the 1990s, was to demonstrate the ability to accurately capture geometry using laser digitizing technology for airflow simulation.
The X-15 was a hypersonic rocket plane launched from under the wing of a Boeing B-52 Stratofortress. During 199 flight in the 1960s the X-15 attained a maximum altitude of 67 miles (108 km) and a maximum speed of Mach 6.85 (4520mph, 7274km/h).