The Michigan Engineer News Center

Local engineering firm utilizes Michigan Aerospace wind tunnel to test pollution sensors

Livonia based engineering consulting firm Airflow Sciences utilized the University of Michigan’s 5’x7’ Wind Tunnel to test sensors used to monitor pollution from industrial exhaust stacks | Short Read
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IMAGE:  Airflow Sciences Team in the University of Michigan's 5'x7' Wind Tunnel

Aerospace alumnus, Robert Mudry (BSAE ’89 MSAE ’94), is president of Airflow Sciences Corporation, an engineering consulting firm based in Livonia, MI.  Nearly half (10) of the 25-person company is operated by University of Michigan engineering alumni. In 2019, they were contracted by the EPA to calibrate probes used to measure exhaust in industrial smoke stacks. The EPA sets strict guidelines for probe testing, including a requirement that the probe occupy less than 2% of the tunnel area. ASC’s own wind tunnel was too small to test the largest PM10 probe, so last summer a team from Airflow Sciences visited the University of Michigan to test the PM10 probe in the University’s 5’x7’ wind tunnel. 

Michigan Aerospace Technicians Tom Griffin and Chris Chartier assisted the Airflow Sciences team, which included a student intern from Michigan Aerospace and another from Michigan Mechanical Engineering. The test campaign utilized several important features of the University wind tunnel, most importantly the probes and sensors already built into the tunnel. The Airflow Science team could also test the probe at high flow speeds, since the University tunnel is capable of reaching flow of 250 ft/s (170 mph).

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The electrons absorb laser light and set up “momentum combs” (the hills) spanning the energy valleys within the material (the red line). When the electrons have an energy allowed by the quantum mechanical structure of the material—and also touch the edge of the valley—they emit light. This is why some teeth of the combs are bright and some are dark. By measuring the emitted light and precisely locating its source, the research mapped out the energy valleys in a 2D crystal of tungsten diselenide. Credit: Markus Borsch, Quantum Science Theory Lab, University of Michigan.

Mapping quantum structures with light to unlock their capabilities

Rather than installing new “2D” semiconductors in devices to see what they can do, this new method puts them through their paces with lasers and light detectors. | Medium Read