Measuring and testing – Navigation – Leeway incidence or side-slip
Patent
1978-06-08
1979-12-11
Ciarlante, Anthony V.
Measuring and testing
Navigation
Leeway incidence or side-slip
308135, G01W 100
Patent
active
041776739
ABSTRACT:
An anemometer includes a rotor assembly having front and rear bearings rotatably secured to axially spaced apart front and rear portions of a fixed rotor support shaft. Radially projecting rotor blades rotate with the bearings about the axis of the shaft in response to fluid flow directed against the blades substantially parallel to the axis of the shaft. The front bearing includes a first tapered bearing surface which tapers wider toward the rear of the shaft and bears directly against a corresponding second tapered bearing surface on the shaft. The second tapered bearing surface provides thrust and radial support upstream of the center of gravity (c.g.) and aerodynamic center of the rotor assembly for loads imposed on the rotor assembly by fluid flowing axially from front to rear along the axis of the shaft. This tends to minimize transverse motion of the rotor from bearing wear during use, resulting in accurate readings over an extended period of use of the instrument.
REFERENCES:
patent: 377426 (1888-02-01), Farmer
patent: 2652228 (1953-09-01), Merrick
patent: 2877945 (1959-03-01), Trebilcock
patent: 3222001 (1965-12-01), Dvorin
patent: 3823611 (1974-07-01), Rudow et al.
patent: 3878718 (1975-04-01), Sugiyama et al.
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