NASA starts wind tunnel tests for its quiet supersonic jet

NASA's plans for a quiet supersonic jet, the QueSST, just became tangible: the agency and Lockheed Martin have started wind tunnel tests for the future X-plane. It's a scale model at this stage, but it will be subjected to winds as high as Mach 1.6 (...

Visualized: Boeing supersonic airliner concept soars in a wind tunnel, quietly

Visualized Boeing's supersonic airliner design carves wind tunnel air, quietly

No, you're not looking at an early preview of Star Wars Episode VII -- it just might represent the future of air transport, though. Boeing has spent years developing a truly quiet supersonic airliner concept, the Icon II, and what you see is an aerodynamics test of a mockup in a vaguely Death Star-like wind tunnel at NASA's Glenn Research Center. The starfighter design is for more than just show, as you'd suspect. Its V-tail design moves sonic booms further back, reducing the chance that shockwaves will reach the ground (and our ears) intact, while the top-mounted engines isolate engine noise. Boeing and NASA are ultimately hoping for production passenger aircraft discreet enough to fly over land at supersonic speeds, although we can't help but think that the sci-fi look is a convenient bonus.

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Source: New Scientist

Wind tunnel PC case pushes the air cooling envelope, does its thing for cancer research

Wind tunnel PC case pushes the air cooling envelope, does its thing for cancer research

Pushing air cooling to its limits might mean buying a bigger fan to the mortal PC builder, but for Mike at Total Geekdom, it meant constructing a wind tunnel case. Built from a box fan, medium-density fiberboard, lexan and aluminum, the tunnel increases airspeed by about 240 percent and cools its contents with a brisk 9 mph breeze. At full bore, however, the fan churns out air speeds between 26 and 30 mph inside the case's sweet spot. As for computer hardware, the rig packs an Ivy Bridge 3770K processor, a pair of Radeon 7970 (Sapphire Dual-X) GPUs, 8GB of RAM and a 40GB SSD. There's still room to overclock the beast, but it currently keeps its CPU humming at 4.5GHz with temperatures between 64 and 65 degrees Celsius, and can run its GPUs at 1225MHz with core temperatures at 46 and 56 degrees Celsius. So, what does one do with a wind tunnel-cooled PC? Why donate time and computing processes for cancer research through the World Community Grid project, of course. For photos, performance specs and a full break down of the construction process, hit the bordering source link.

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Source: Total Geekdom