Investigation of Turbulence in Wind Tunnels by a Study of the Flow About Cylinders (1926)
NASA Technical Reports Server (NTRS) · leaf 17
e damping was large, and the natural frequency very low. When a larger Pitot tube was used with 3^-inch connections, we found at low and moderate speeds the blade impulses coining through, accompanied by an oscillation of frequency near 11 per second. At high speeds this low frequency alone (fig.… … B. Comparison of static of standard Pitot tube and wall cell; 43.3 inches of H-'mch tubing; 66 ft./sec. Time breaks, 0.03 sec. apart. Wind tunnel motor, 495 revolutions per minute. Frequency of blade impulses, 33 per second C. Comparison of static of large Pitot tube and wall cell; 43.3 inches of…
NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
![An illustration from Colour vision [electronic resource] : being the Tyndall lectures delivered in 1894 at the Royal Institution (1895)](https://img.insideoutlibrary.com/img/200/ia-b21285913-55-0.webp)
![An illustration from Die Physiologie der Farben [electronic resource] : für die Zwecke der Kunstgewerbe (1866)](https://img.insideoutlibrary.com/img/200/ia-b20425363-117-0.webp)
