Method and apparatus for obtaining maximum sail boat velocity

Details Method and apparatus for obtaining maximum sail boat velocity Method and apparatus for obtaining maximum sail boat velocity

1974-04-08

1976-02-03

Blix, Trygve M.

Ships

Sail or control means therefor

Specific sail structure or arrangement

73178R, 114144E, 114, B63H 904, G01C 2112

Patent

active

039358283

ABSTRACT:
In a sailboat, signals representing relative wind speed and slot wind speed are differentially compared to obtain a signal that represents the increase in wind speed in the slot over the relative wind speed approximately independent of incremental changes in relative wind speed approximately independent of incremental changes in relative wind speed. By observing the differential quantity upon relative adjustment of the sails, a sail setting can be selected to give maximum slot effectiveness. An instantaneously responsive thrust indicator is provided as a guide to overall sail trim effectiveness for maximum driving force on the hull.

REFERENCES:
patent: 3304778 (1967-02-01), Stuart
patent: 3398575 (1968-08-01), Saxl
patent: 3531988 (1970-10-01), Knotmeter
patent: 3618379 (1971-11-01), Lipton

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