Defense

August 7, 2013

AEDC’s Range-G in operation for 50 years

David Brown and Troy Perry installed a slug projectile with a pitch motor into the 8-inch bore diameter barrel of AEDC’s Range-G two-stage, light gas gun at a velocity of 8,200 feet per second.

 

Since the summer of 1963, when the Arnold Engineering Development Complex’s Hypervelocity Ballistic Range-G came into operation, the facility has tested items for boundary-layer studies to hypersonic plasma mitigation studies.

The range is used to conduct kinetic energy lethality and impact phenomenology tests. It is the largest two-stage, light-gas gun system in the U.S. that provides “soft launch”, minimized acceleration loading, capability to launch extremely high-fidelity missile simulation at hypervelocity speeds.

Range-G is capable of launching projectiles at velocities up to 23,000 feet per second. Projectiles up to eight inches in diameter are launched into a 10-foot diameter, 930-foot long instrumented tank that can be maintained at pressure altitudes from sea level to 225,000 feet.

The use of 3-D finite-element analysis software, ABAQUS, coupled with the AEDC light-gas gun code provides a seamless projectile design capability.

The unique ability to duplicate real flight, although at subscale, makes it the ideal facility for a variety of testing requirements such as, aerodynamic, aerothermal heating assessments, wake physics and material phenomenology.

 

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 the Arnold Engineering Development Complex.

 

Laser-illuminated 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.




All of this week's top headlines to your email every Friday.


 
 

 

Headlines July 27, 2015

News: U.S.-Turkey deal aims to create de facto ‘safe zone’ in northwest Syria – Turkey and the United States have agreed on the outlines of a de facto “safe zone” along the Turkey-Syria border under the terms of a deal that is expected to significantly increase the scope and pace of the U.S.-led air war against...
 
 

News Briefs July 27, 2015

Putin OKs maritime code calling for strong Atlantic presence Russian President Vladimir Putin has approved a new version of the country’s maritime doctrine that calls for maintaining a strong Russian presence in the Atlantic Ocean amid concerns about NATO expansion. The doctrine, which covers naval, merchant marine and scientific maritime issues, also adds the Antarctic...
 
 
Army photograph by SFC Walter E. van Ochten

U.S., Ukraine, Romania, Bulgaria train together at Rapid Trident 2015

Army photograph by SFC Walter E. van Ochten U.S. soldiers, of the 3rd Platoon, 615th Military Police Company, 709th Military Police Battalion, react as they conduct reacting to contact training as part of their situational trai...
 

 
nasa-astronaut

Astronaut Stephen Frick retires from NASA

Astronaut Stephen Frick has retired from NASA to accept a position in the private sector. Frick, who flew as both a shuttle pilot and commander, left the Agency July 13. Steve has been a great asset to the astronaut office and ...
 
 
Army photograph by Sgt. Juana M. Nesbitt

Estonian, US forces receive new jump wings

Army photograph by Sgt. Juana M. Nesbitt Pvt. Kalmer Simohov, of Parnu, a volunteer with the Estonian Defense League, receives his U.S. Army Airborne wings following the joint airborne operations exercise at a drop zone in Nurm...
 
 

Lockheed Martin, StemRad studying first-responder radiation shield for potential deep-space application

StemRad, Ltd. and Lockheed Martin have initiated a joint research and development effort to determine if StemRad’s radiation shielding technology ñ originally designed for first-responders ñ could help to keep astronauts safe on deep-space exploration missions. This collaboration is part of Lockheed Martin’s ongoing effort to establish international partnerships for human explorat...
 




0 Comments


Be the first to comment!


Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>