Apparatus to determine the optimum setting of a boat sail

Abstract

An apparatus to measure and display the pressures developed on the surfaces of a boat sail. This apparatus uses an electronic module that attaches to the sail to measure and calculate the surface pressures or differential pressure and transmit this data via wireless link to a separate display unit. The display unit provides a visual display of the measured pressures and a peak indication of the maximum or minimum pressures measured.

1 . An apparatus for measuring and displaying the differential pressure across a boat sail, said apparatus comprising one or more pressure measuring module temporally attached to one or both sail surface, and a display unit, said pressure measuring module having the ability to measure the pressure on both of the sail surfaces, calculate the differential pressure between the sail surfaces, and transmit the differential pressure data to the display unit via a wireless means, said display unit having means to receive the wireless data, means to process the data, and means to display the value or relative value of the measured differential pressure and the peak value or relative peak value of the measured differential pressure. 
   
   
       2 . An apparatus for measuring and displaying the pressure on both sides of a boat sail, said apparatus comprising one or more pressure measuring modules temporally attached to one or both sail surfaces and a display unit, said pressure measuring module having the ability to measure the pressure on one or both of the sail surfaces, process the data, and transmit the pressure data to the display unit via a wireless means, said display unit having means to receive the wireless data, means to process the data, and means to display the value or relative value of the measured pressures and the maximum or minimum peak value or relative value of the measured pressures.