Defense Systems Digest - 29 January 2019

Source: Photo Credit:  NASA.

Notable Technical Inquiry

What are the material properties of common structural building materials in the strain rate range of 0.001 to 100 s-1?

The Defense Systems Information Analysis Center (DSIAC) received a request for information on material properties of different common construction/building materials...

 Professor of Aerospace Engineering, U.S. Air Force Institute of Technology (AFIT)

Voice From The Community

Dr. Robert Greendyke
Professor of Aerospace Engineering, U.S. Air Force Institute of Technology (AFIT)

I have worked in the field of hypersonic Computational Fluid Dynamics and radiative signatures, as well as hypersonic thermophysics for over 30 years. At AFIT, I teach the Hypersonic and Air Weapons course sequences to military and Department of Defense (DoD) civilians at the Master’s and PhD levels. I also conduct research into advanced hypersonics phenomenon and simulation of both domestic and foreign hypersonic vehicles. In addition, I provide various short courses in hypersonic physics to a variety of DoD and Intelligence Community member organizations.

Featured News

U.S. Army photo by Spc. Adeline Witherspoon, 2nd SBDE PAO

Many new technologies are introduced to the world with untold hype and fail to live up to their promise, both in terms of promised improvements and user adoption. This has not been the case for AM.

AM can produce a component in a layer-wise fashion rather than starting with a block of material and removing pieces using milling, cutting, or lathing processes.

AM machines require connections to other computers for a wide range of reasons; this provides the means to potentially gain access to an AM machine. An adversary gaining access to an AM machine is potentially far more dangerous than access to a modern digital computer numeric-controlled subtractive machining machine. Read More