Measuring and testing – Navigation – Leeway incidence or side-slip
Patent
1978-12-06
1980-06-10
Goldstein, Herbert
Measuring and testing
Navigation
Leeway incidence or side-slip
73204, G01P 512, G01W 104
Patent
active
042066387
ABSTRACT:
A directional heat loss anemometer transducer for sensing both the speed and direction of motion of a fluid, liquid or gas in which the transducer is immersed. The transducer is constructed of fine long cylindrical resistive conductors which are axially disposed about a supporting body wherein at least two conductors serve as a direction sensing pair which can also be used to determine impinging fluid speed. For flow in opposite directions across the transducer a third conductor can be used to independently sense speed when it is mounted so as to function as a freely supported fine cylinder. The direction sensing conductors are joined to the supporting body by an adhesive connecting means thereby preventing independent flow between the individual conductors of the conductor pair. The electrical conductors can be metallic or resistive films which are deposited on a cylindrical supporting body, or they may be individual wires of circular cross-section. Each conductor which is actively used is made of a material which exhibits a change in its electrical resistance as a function of temperature. Electrical connections are provided at each end of each conductor to permit each conductor to be separately excited by an electrical current. Typically, the transducer is operated in air so as to provide a non-moving parts means for measuring a particular component of wind speed, and a pair of orthogonally mounted similar transducers can be used to determine sine and cosine components of wind speed.
REFERENCES:
patent: 2981104 (1961-04-01), Auger
patent: 3991624 (1976-11-01), Davies
patent: 4024761 (1977-05-01), Djorup
Goldstein Herbert
Mentag Robert G.
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