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Hoover Inc. recalled about 142,000 Hoover WindTunnel Canister Vacuums after 69 reports of them overheating or shorting, even when turned off, said the U.S. Consumer Product Safety Commission. So ...
Vertical wind tunnels have a test section with air flowing upwards. Photography is used to record free-flight spin characteristics of aircraft models. Nets are installed above and below the test section to prevent the model from moving too high and to catch it when the air stops flowing. [31]
Free-jet NASA Glenn Engine Components Research Lab [53] United States NASA Glenn Hypersonic Test Facility [54] Hypersonic United States NASA Glenn Icing Research Tunnel [51] 3 m × 2 m × 6 m (9 ft × 6 ft × 20 ft) Subsonic Icing United States NASA Glenn Propulsion Systems Laboratory [55] Active Diameter 7 m (24 ft) by 12 m (38 ft) long
The power required to run a supersonic wind tunnel is enormous, of the order of 50 MW per square meter of test section cross-sectional area. For this reason most wind tunnels operate intermittently using energy stored in high-pressure tanks.
Hoover Inc. announced a recall of its Hoover WindTunnel bagless upright vacuums after receiving reports of the machines burning carpets and a consumer's hand, the U.S. Consumer Product Safety ...
AGARD-B standard wind tunnel model on the model support of the T-38 wind tunnel Theoretical geometry of the AGARD-B standard wind tunnel model and its sting fixture; all dimensions are relative to body diameter D (dimensions according to.
The first human to fly in a vertical wind tunnel was Jack Tiffany in 1964 at Wright-Patterson Air Force Base located in Greene and Montgomery County, Ohio.. In 1982 Jean St-Germain, an inventor from Drummondville, Quebec, [2] sold a vertical wind tunnel concept to both Les Thompson and Marvin Kratter, both of whom went on to build their own wind tunnels.
Transonic wind tunnels, between Mach 0.75 and Mach 1.2 (920 and 1,500 km/h; 570 and 910 mph; 260 and 410 m/s), are designed on similar principles as subsonic tunnels but present additional challenges, primarily due to the reflection of shock waves from the walls of the test section.