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Wind vane and anemometer7/21/2023 In red the information of the anemometer, in blue the same corrected information The result is more precise steering (performance gain) and, above all, fewer helm strokes and therefore reduced power consumption. Having a more accurate wind reading acts primarily on the autopilot. It has been fitted with a high-resolution digital decoder to obtain a sensitivity now close to a tenth of a degree. It is equipped with a new reel, the lightest, and the windvane blade has been redesigned. NKE has moreover improved its wind vane anemometer sensor. For it to be relevant, it is also necessary to install a high-performance wind sensor at the head of the mast. It subtracts in real time all the accelerations of the boat that disturb this measurement.Ī specific algorithm has been developed for the HR Processor (the brand's top-of-the-range control unit). Her masthead will have circulated through the air at good speed, recording first a headwind then a tailwind.īy installing a 3-dimensional accelerometer inside the boat to measure these boat movements, NKE manages to "de-noise" the apparent wind. Our boat will therefore have dived towards the trough of the swell then reared towards the next peak before starting again. That is to say that in 7 seconds a fixed point on the water will have undergone 2 wave crests. The period of a 1 metre swell can be around 7 seconds. The movements induced at the head of the mast cause the wind sensor to move in the air, which then measures a speed and an angle. To understand, imagine a sailboat at anchor on a windless day with a 1-metre swell. Heeling, pitching and swell propel the masthead at high speed. Perched high up, it suffers the effects of the wind (that's what we ask of it!), but is strongly disturbed by the movements of the boat. On a sailboat, the wind sensor ( speed and direction) is installed at the masthead.
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