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Colin Vandercreek, a University of Maryland student, works in the Arnold Engineering Development Complex White Oak Student Lab developing non-intrusive diagnostics for use in the Hypervelocity Wind Tunnel 9. (Coutesy photo)




Colin Vandercreek, a University of Maryland student, works in the Arnold Engineering Development Complex White Oak Student Lab developing non-intrusive diagnostics for use in the Hypervelocity Wind Tunnel 9. (Coutesy photo)

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An extensive outage for maintenance occurs at Hypervelocity Wind Tunnel 9 once every five to ten years. After a complete tear down and refurbishment, the facility’s operation and maintenance staff rig one of nine high-pressure control valves in order to lift it into place. These valves are uniquely designed to handle the volumetric flow rates of the wind tunnel. (Photo by AJ Spicer)
These three driver large vessels can be pressurized to 40,000 pounds per square inch and are one of the enabling technologies that make Hypervelocity Wind Tunnel 9 unique. During major maintenance they are rolled outside of the tunnel building into a maintenance bay. The gray steel fixture, pictured, is used to extract the central plug out of each driver vessel. (Photo by AJ Spicer)
Hypervelocity Wind Tunnel 9 staff looks on as the test crew executes run 4000. (Photo by Arnold Collier)
Air Force HiFEX vehicle geometry readying for test in the Arnold Engineering Development Complex (AEDC) Hypervelocity Wind Tunnel 9. Novel airframe/engine integration combine with advanced test and evaluation techniques in a world-unique test environment to gain the very first data sets for this international US-German cooperative program as scientists and engineers look to the future of space access.
Inna Kurits, Arnold Engineering Development Complex (AEDC) Tunnel 9 test engineer, checks the Air Force HiFEX vehicle geometry for final readiness before being tested in the AEDC Hypervelocity Wind Tunnel 9. Novel airframe/engine integration combined with advanced test and evaluation techniques in a world-unique test environment to gain the very first data sets for this international US-German cooperative program as scientists and engineers look to the future of space access.
Air Force Project Engineer and Purdue University graduate student George Moraru examines the illuminated temperature sensitive paint (TSP) coating on the large, 7-degree cone prior to the test program. The testing is performed under the Test Resource Management Center (TRMC) and the Air Force Office of Scientific Research (AFOSR) funded Hypersonic Center of Testing Excellence (CoTE). (Photo by Michael Smith)
Electrical contractors replace high-voltage electrical cable at the Arnold Engineering Developement Complex (AEDC) Hypervelocity Wind Tunnel 9, White Oak, Md. as part of a team effort to return the test facility back to operational status. (Photo provided)
LASER-ILLUMINTAED PHOTOGRAPHY was developed at the Arnold Engineering Development Complex to study ablative effects on a 12,000 mph free-flight projectile in the Center’s 1,000-foot hypervelocity ballistic range. The technique provided a photographic exposure equivalent to 20 billionths of a second. (1970 AEDC Photo)
AEROBALLISTIC LAUNCH PREPARATION-Final step is the insertion of powder charge into breech launcher. In sequence, powder compresses hydrogen, hydrogen drives piston, piston compresses hydrogen in pump tube which accelerates model to desired velocity. The free-flight models will be fired through the 1,000-foot range at velocities up to and exceeding Mach 20. The test unit, 1,000-ft Hypervelocity Range-G, is part of the von Karman Gas Dynamics Facility at AEDC. (1963 AEDC Photo)
LASER-ILLUMINTAED PHOTOGRAPHY was developed at the Arnold Engineering Development Complex to study ablative effects on a 12,000 mph free-flight projectile in the Center’s 1,000-foot hypervelocity ballistic range. The technique provided a photographic exposure equivalent to 20 billionths of a second. (1970 AEDC Photo)
AEROBALLISTIC LAUNCH PREPARATION-Final step is the insertion of powder charge into breech launcher. In sequence, powder compresses hydrogen, hydrogen drives piston, piston compresses hydrogen in pump tube which accelerates model to desired velocity. The free-flight models will be fired through the 1,000-foot range at velocities up to and exceeding Mach 20. The test unit, 1,000-ft Hypervelocity Range-G, is part of the von Karman Gas Dynamics Facility at AEDC. (1963 AEDC Photo)