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صورة:Schlieren photograph of T-38 shock waves.jpg


Summary

Schlieren photograph of T-38 shock waves at Mach 1.1, 13,000 feet Photo Number: EC94-42528-1 Photo Date: December 13, 1993 Formats: 513x480 JPEG Image (143 KBytes) 1096x1024 JPEG Image (678 KBytes) 2997x2800 JPEG Image (4,664 KBytes) Photo Description: This is Dr. Leonard Weinstein's Schlieren photograph of a T-38 at Mach 1.1, altitude 13,700 feet, taken at NASA Wallops in 1993. Project Description: Schlieren photography (from the German word for "streaks") allows the visualization of density changes, and therefore shock waves, in fluid flow. Schlieren techniques have been used for decades in laboratory wind tunnels to visualize supersonic flow about model aircraft, but not full scale aircraft until recently. Dr. Leonard Weinstein of NASA Langley Research Center developed the first Schlieren camera, which he calls SAF (Schlieren for Aircraft in Flight), that can photograph the shock waves of a full sized aircraft in flight. He successfully took a picture which clearly shows the shock waves about a T-38 aircraft on December 13, 1993 at Wallops Island, MD. The camera was then brought to the NASA Dryden Flight Research Center because of the high number of supersonic flights there. NASA Photo by: Dr. Leonard Weinstein Keywords: Schlieren; T-38; Dr. Leonard Weinstein; NASA Langley Research Center; Wallops

source:http://www1.dfrc.nasa.gov/Gallery/Photo/Schlieren/HTML/EC94-42528-1.html

Licensing

Public domain
 This file is in the public domain because it was created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (NASA copyright policy page or JPL Image Use Policy).

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