Measuring and testing – Navigation – Leeway incidence or side-slip
Patent
1979-11-13
1980-12-30
Ruehl, Charles A.
Measuring and testing
Navigation
Leeway incidence or side-slip
340 25, G01W 104
Patent
active
042416043
ABSTRACT:
A new and improved device for measurement and visual indication of both wind direction and wind speed. The device is suitable for use as a visual aircraft landing aid located at or near an airport to provide both wind direction and wind speed information to pilots desiring to land at the airport. A cylindrical lamp housing having a wind vane mounted on its top is rotatably mounted on a support post having a high intensity lamp mounted on its top and centered in the lamp housing. A lens is mounted on the interior surface of the cylindrical sides of the lamp housing at a location directly below the wind vane. The lens projects light emitted from the lamp to a concentric ring-shaped light scattering target positioned on the ground surrounding the device. When the wind vane is moved by the wind, the lamp housing and lens rotates and moves the lamp image to a new location on the target to visually indicate the wind direction. A revolving cup anemometer is mounted on the top cover of the lamp housing and concentric with the support post. The drive shaft of the anemometer rotates a shutter between the lamp and the lens to interrupt light transmission, and thereby, flash the lamp image on the target at a rate which is responsive to the wind speed. In addition, the revolving action of the shutter will cause the lamp and the lamp housing to appear to flash at a rate which is responsive to the wind speed.
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patent: 3762876 (1973-10-01), Koehler
Reese, II Benjamin P.
Ruehl Charles A.
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