Notable Technical Inquiry

What defines hypersonic wind tunnel testing with “dirty flow?”

DSIAC was asked to define "dirty flow" in regards to hypersonic wind tunnel testing, specifically what limitations are associated with such testing (speed, debris used, etc.).  DSIAC subject matter experts at the Texas Research Institute Austin, Inc., detailed the purpose, process involved, and drawbacks of dirty flow testing. Particulate matter within hypersonic flows in wind tunnel testing is often used as part of flow visualization in hypersonic experiments, particularly for impulse experiments. The presence of particulate matter within the flow…

Voice From The Community

Matthew Thompson, Ph.D

Toray Composite Materials America (CMA), Inc./Manager, Technical Service,

My expertise is in carbon fiber composites solutions through my role in carbon fiber technical service at Toray CMA. I am familiar with carbon fiber manufacturing, properties, processing, specification, quality assurance, and composite analysis. I have given numerous technical presentations, written several papers, and hold four international patentspatents.  My background includes material development for additive manufacturing with Boeing Research & Technology. I have a Ph.D. in chemical engineering from West Virginia University, with a focus on processing thermoplastics and nanomaterials, and experience at Bayer MaterialScience (now Covestro) and the U.S. Naval Research Laboratory.  I am also the current chair for the Society of Plastics Engineers Additive Manufacturing Special Interest Group and hold a special interest for continuous carbon fiber additive manufacturing.

In This Issue

U.S. Department of Defense’s (DoD’s) Autonomous Vessel Sails Through Transit Test, Participates in Exercise Dawn Blitz

A Ghost Fleet Overlord unmanned surface vessel (USV), part of a partnership between the DoD’s Strategic Capabilities Office (SCO) and the Navy, recently […]

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