![](http://www.alamy.com/thumbs/6/A28A6476-BF3A-4E4C-986E-CB513A0168DE/PH7Y64.jpg)
The high-speed laser system, pictured, non-intrusively measures the velocity of the flow field at AEDC Hypervelocity Tunnel 9. The lower uncertainty of measurements through the utilization of this system are helping Tunnel 9 reach its goal of testing at speeds of up to Mach 18.
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Photo credit: © Barney Low / Alamy / Afripics
License: Licensed
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Keywords: aedc, afb, afmc, aftc, air, america, archive, armed, army, arnold, center, command, complex, defence, development, engineering, force, forces, materiel, military, navy, reportage, service, serviceman, servicemen, soldier, states, test, united, usa