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A sample wind tunnel layout showing some typical features including a test section and control room, a machine for pumping air continuously through ducting, and a nozzle for setting the test airspeed. A wind tunnel is "an apparatus for producing a controlled stream of air for conducting aerodynamic experiments". [1]
Phillips devised a wind tunnel in which he studied a wide variety of aerofoil shapes for use in providing lift. The tunnel was unusual in that the gas flow was provided by steam rather than air. [2] By 1884 he was able to register his first patent, and more were to follow.
Large Low Speed Wind Tunnel 2.1 m (6 ft 11 in) by 1.5 m (4 ft 11 in) Low Turbulence Wind Tunnel 0.8 m (2 ft 7 in) by 0.6 m (2 ft 0 in) Open Jet Wind Tunnel 1.1 m (3 ft 7 in) diameter United Kingdom University of British Columbia Boundary Layer Wind Tunnel [90] 2.5 m × 1.6 m × 23.6 m (8 ft 2 in × 5 ft 3 in × 77 ft 5 in)
In 1871 Wenham and colleague John Browning designed and constructed what was probably the world's first wind tunnel. Their experiments showed that high aspect ratio wings—long and narrow—had a better lift-to-drag ratio than short stubby wings with the same lifting area. Writing about his work, Wenham may have been the first scientist to use ...
The Siloam inscription, Silwan inscription or Shiloah inscription (Hebrew: כתובת השילוח), known as KAI 189, is a Hebrew inscription found in the Siloam tunnel which brings water from the Gihon Spring to the Pool of Siloam, located in the City of David in East Jerusalem neighborhood of Silwan ("Siloam" in the Bible).
The R. J. Mitchell Wind Tunnel is a closed test section, closed return type wind tunnel powered by a 746 kW (1,000 hp) electric motor. The test section is 3.5m wide by 2.4m high (11 ft by 8 ft) and the tunnel is capable of creating wind speeds of up to 40 m/s (90 mph).
The Wrights took a huge step forward and made basic wind tunnel tests on 200 scale-model wings of many shapes and airfoil curves, followed by detailed tests on 38 of them. An important discovery was the benefit of longer narrower wings: in aeronautical terms, wings with a larger aspect ratio (wingspan divided by chord – the wing's front-to ...
The newer Siloam Tunnel (Hebrew: נִקְבַּת הַשִּׁלֹחַ, Nikbat HaShiloaḥ), also known as Hezekiah's Tunnel (Hebrew: תעלת חזקיהו, Te'alát Ḥizkiyáhu), is a water tunnel that was carved within the City of David in ancient times.