Experimental Data on the Dynamic Properties of Several Propeller Vanes

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  • 1 Royal Netherlands Meteorological Institute (KNMI), De Bilt, The Netherlands
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Abstract

The dynamic properties of three types of commercially available propeller vanes were investigated in a wind tunnel. The same was done for the cup anemometer and wind vane as used on the 200 m mast at Cabauw, the Netherlands, as well as for the trivane, used for three-dimensional turbulence measurements. For these instruments the distance constant, damping ratio and damped wavelength were determined as well as the propeller response to a constant air speed as a function of the yaw angle. The results show differences from the manufacturer's specifications. Compared with the other instruments, the trivane appeared to be about twice as fast in response to variations of the wind vector. Between the other instruments there were no large differences.

Abstract

The dynamic properties of three types of commercially available propeller vanes were investigated in a wind tunnel. The same was done for the cup anemometer and wind vane as used on the 200 m mast at Cabauw, the Netherlands, as well as for the trivane, used for three-dimensional turbulence measurements. For these instruments the distance constant, damping ratio and damped wavelength were determined as well as the propeller response to a constant air speed as a function of the yaw angle. The results show differences from the manufacturer's specifications. Compared with the other instruments, the trivane appeared to be about twice as fast in response to variations of the wind vector. Between the other instruments there were no large differences.

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