Environmentally-resistant anemometer

Details Environmentally-resistant anemometer Environmentally-resistant anemometer

1976-04-27

1977-08-16

Goldstein, Herbert

Measuring and testing

Volume or rate of flow

Expansible chamber

G01F 110

Patent

active

040417590

ABSTRACT:
This invention relates to an improved helicoidal-bladed, cosine anemometer which is capable of accurately sensing very small elements of fluid flow at any angle of attack in hostile environments where extremes of temperature, dust, and moisture are encountered. This invention relies on principles of miniaturization which permit accurate measurement with a minimum of supporting equipment and which also permits thermal protection of the device in situations where temperature extremes are encountered. A notched lower end of the blade together with a plurality of parallel ridges around the circumference of the hub form a channel for deflecting air along the blade for the purpose of controlling the anemometer blade, tip, and edge vortices to eliminate dynamic pressures on adjacent blades which frequently occur in conventional bladed anemometers when the angle of fluid attack is large.

REFERENCES:
patent: 1479013 (1924-01-01), Sperry
patent: 1957681 (1934-05-01), Thompson
patent: 3670569 (1972-06-01), Partzsch
patent: 3756079 (1973-09-01), November
patent: 3766780 (1973-10-01), Aizawa et al.
patent: 3771362 (1973-11-01), Roberts

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