FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH
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The DEZI Anemometer-Bivane is composed of the sensor and ground electronic devices. The wind velocity sensor is a four-blade propeller, which is made of foaming polyvinylbenzene, mounted on the front of the sensor assembly using a microbearing with extremely small friction and an inner diameter of 3mm. It only weighs 11.5g, thus making the required starting wind velocity of the wind velocity sensor small and the response speed vast. The bivane tail wing is shaped like a cross and is also made of foaming polyvinylbenzene. The stand and connector of the sensor are made of a light aluminum alloy and stainless steel. The bivane can turn freely facing the wind in both horizontal and vertical directions simultaneously. Hence the propeller always turns facing the wind direction. The electrical signals are transmitted through the micromoment conducting ring. The sensor assembly is installed on the platform through the help of three bolts. The wind velocity transformer uses the opti-electrical transformation principle to convert the rpm of the propeller into corresponding number of pulses, and, through a cable, the pulse signals are transmitted to indoor electronic devices for processing.