Thread: pitch and DEMON
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Old 06-26-07, 02:14 AM   #6
arl85
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Join Date: May 2007
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Quote:
Originally Posted by arl85
so, if you set the pitch to the max and the engine to ahead 1/3 you are able to obtain a speed of 11 knots but the towed array show me the same noise of when i go to 5 knots!
so changing the pitch will raise my speed...but since propeller rotate at previous speed the noise generated will be the same?

I think it should not be in this way...the TA should show noise increasing...or not? :hmm:

Quote:
Originally Posted by Bubblehead Nuke
Um, Demon works by displaying a bladerate based on repeditive harmonics. Thus if the RPM is constant then the bladerate shown will be constant regardless of the pitch the blades are set at.[...]What used to happen was demon showed a bladerate proportional to ship speed that did to take into account blade pitch.
I think so...but using the TA of FFG to analyze my own noise i can only see the speed, not the bladerate...
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