Fig. 1. Anemometer assembly. 



STATIC CALIBRATION 



Wind tunnel tests were conducted at the Round 

 Hill Field Station of the Department of Meteor- 

 ology, Massachusetts Institute of Technology, 

 to evaluate the performance of the Beckman- 

 Whitley cups and the mechanical portions of the 

 anemometer. The results that were used in the 

 circuit design are shown in tabular form. They 

 are averages for the k anemometers tested. 



Miles/hr Meters/sec Pulses/sec Rev/min 



30 



10 



1 



13.1m 



lt-.U70 

 O.Ut-7 



260.00 

 86.67 



8.66 



520.00 



173.3^ 

 17.30 



No departure from linearity could be detected 

 on wind tunnel tests. However, allowance had to 

 be made for a certain amount of background noise 



1^9 



