Measuring and testing – Navigation – Leeway incidence or side-slip
Patent
1987-01-23
1988-03-15
Ruehl, Charles A.
Measuring and testing
Navigation
Leeway incidence or side-slip
G01W 102
Patent
active
047304880
ABSTRACT:
A windsock used for indicating wind direction is provided on an upper side with a multiplicity of spaced chevrons for enhancing the detection of wind direction. The chevrons are spaced from one another by such distances that each chevron represents the addition of 4 or 5 knots to the prevailing wind velocity. Accordingly, if 4 chevrons are visible from above, the prevailing wind speed is 4 to 5 knots greater than if only 3 chevrons are visible from above.
REFERENCES:
patent: 2617298 (1952-11-01), Grinley
patent: 3696672 (1972-10-01), Lindsay
patent: 4286463 (1981-09-01), Cole
Ruehl Charles A.
The Spark Corp.
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