File:Shockwave pattern around a T-38C observed with Background-Oriented Schlieren photography (1).jpg
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Summary[edit]
DescriptionShockwave pattern around a T-38C observed with Background-Oriented Schlieren photography (1).jpg |
English: Air-to-air photography of a Northrop T-38 Talon in supersonic flight over the Mojave Desert reveals air density changes caused by flow regime transition around the aircraft, and the turbulent exhaust of the aircraft’s jet engines.
This photo was acquired using a technique named Air-to-air Background-Oriented Schlieren (AirBOS). The process involves imaging with a high-speed camera mounted on the bottom of a Beechcraft B-200 King Air aircraft while the T-38C passes underneath. The pattern formed by the desert ground underneath the aircraft is filmed separately, and then removed digitally from the captured images during post-processing. This reveals the distortions created by the shockwaves, which result from the change in the air’s refractive index caused by density changes. Deutsch: Luftbildfotografie einer Northrop T-38 Talon beim Überschallflug über der Mojave-Wüste. Sie zeigt Änderungen der Luftdichte, die durch die Strömungsbeeinflussung durch das Flugzeug und die turbulenten Abgase der Triebwerke des Flugzeugs verursacht werden. Dieses Foto wurde mit der "AirBOS"-Technik (Air-to-Air Background-Oriented Schlieren) aufgenommen. Der Prozess umfasst die Bildgebung mit einer Hochgeschwindigkeitskamera, die an der Unterseite einer Beechcraft B-200 King Air angebracht ist, während die T-38-Talon unter ihr fliegt. Das vom Wüstenboden unter dem Flugzeug gebildete Muster wird separat aufgenommen und dann während der Nachbearbeitung digital aus den diesen Bildern entfernt. Dies offenbart die durch die Stoßwellen verursachten Verzerrungen, die sich aus der Änderung des Brechungsindex der Luft aufgrund von Dichteänderungen ergeben. |
Date | |
Source | https://www.nasa.gov/centers/armstrong/features/shock_and_awesome.html |
Author | NASA & US Air Force: J.T. Heineck / Ed Schairer / Maj. Jonathan Orso / Maj. Jeremy Vanderhal |
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Licensing[edit]
Public domainPublic domainfalsefalse |
This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) | ||
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current | 06:15, 30 August 2015 | 4,307 × 2,400 (578 KB) | Ariadacapo (talk | contribs) | User created page with UploadWizard |
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Pixel composition | RGB |
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Orientation | Normal |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | Adobe Photoshop CS5 Windows |
File change date and time | 14:31, 14 May 2015 |
Date and time of digitizing | 11:14, 24 March 2015 |
Color space | sRGB |