Abstract: Anemometer for independently measuring wind speed and direction in fluid medium. A second anemometer portion has at least one attribute resulting in different wind resistance in fluid medium than a first anemometer portion, such as a different: mass, shape, density, specific gravity, drag coefficient and/or freedom of motion. Different wind resistance causes inclination of anemometer when deployed to fall autonomously along a trajectory of fluid medium, where anemometer drag coefficient curtails initial ballistic trajectory such that anemometer enters free-fall descent after deployment. Anemometer includes inclinometer to obtain inclination measurements, and memory/transmitter to store/transmit inclination measurements. Local wind direction/speed is determined from inclination measurements based on direction/degree of anemometer inclination in correlation with measurement timings. Anemometer may be deployed from moving airborne platform.

Abstract: Anemometer for independently measuring wind speed and direction in fluid medium. A second anemometer portion has at least one attribute resulting in different wind resistance in fluid medium than a first anemometer portion, such as a different: mass, shape, density, specific gravity, drag coefficient and/or freedom of motion. Different wind resistance causes inclination of anemometer when deployed to fall autonomously along a trajectory of fluid medium, where anemometer drag coefficient curtails initial ballistic trajectory such that anemometer enters free-fall descent after deployment. Anemometer includes inclinometer to obtain inclination measurements, and memory/transmitter to store/transmit inclination measurements. Local wind direction/speed is determined from inclination measurements based on direction/degree of anemometer inclination in correlation with measurement timings. Anemometer may be deployed from moving airborne platform.

Abstract: Wind parameter indication device and method for providing an indication of wind speed and wind direction. The device is deployed along an aerial trajectory toward a ground surface, such as after being ejected from an aircraft in flight. The device includes an anemometer, an altimeter, a compass, a processor and a transmitter. The anemometer obtains local wind speed and local wind direction measurements along the trajectory. The altimeter obtains altitude measurements along the trajectory. The compass obtains direction measurements along the trajectory. The device may further include an accelerometer, for obtaining acceleration measurements along the trajectory. The processor determines a wind speed value and a wind direction value associated with a predetermined altitude of the device. The transmitter transmits the determined wind speed value and wind direction value to a remotely located receiver.

Abstract: Wind parameter indication device and method for providing an indication of wind speed and wind direction. The device is deployed along an aerial trajectory toward a ground surface, such as after being ejected from an aircraft in flight. The device includes an anemometer, an altimeter, a compass, a processor and a transmitter. The anemometer obtains local wind speed and local wind direction measurements along the trajectory. The altimeter obtains altitude measurements along the trajectory. The compass obtains direction measurements along the trajectory. The device may further include an accelerometer, for obtaining acceleration measurements along the trajectory. The processor determines a wind speed value and a wind direction value associated with a predetermined altitude of the device. The transmitter transmits the determined wind speed value and wind direction value to a remotely located receiver.