Miniature drag force anemometerA miniature drag force anemometer is described which is capable of measuring dynamic velocity head and flow direction. The anemometer consists of a silicon cantilevered beam 2.5 mm long, 1.5 mm wide, and 0.25 mm thick with an integrated diffused strain gage bridge, located at the base of the beam, as the force measuring element. The dynamics of the beam are like that of a second order system with a natural frequency of about 42 kHz and a damping coefficient of 0.007. The anemometer can be used in both forward and reversed flow. Measured flow characteristics up to Mach 0.6 are presented along with application examples including turbulence measurements.
Document ID
19780033488
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Krause, L. N. (NASA Lewis Research Center Cleveland, OH, United States)
Fralick, G. C. (NASA Lewis Research Center Cleveland, Ohio, United States)