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Old 07-16-14, 10:15 PM   #1
maillemaker
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Default What is the spiral thing wrapped around the periscope shaft?

What is the spiral thing wrapped around the periscope shaft?

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Old 07-17-14, 08:26 AM   #2
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They are wires, designed to disrupt the water flow around the periscope and help keep the vibration down.
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Old 07-17-14, 02:21 PM   #3
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Cool.

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Old 07-17-14, 07:06 PM   #4
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Quote:
Originally Posted by Sailor Steve View Post
They are wires, designed to disrupt the water flow around the periscope and help keep the vibration down.
I could have sat here from here to Sunday and I never would have come up with that.

The stuff you learn just hangin' around.
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Old 07-18-14, 07:19 AM   #5
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Quote:
Originally Posted by desirableroasted View Post
...
The stuff you learn just hangin' around.
Great, start giving ideas to Bernard on how to use that spiral slide while he is on watch duty.
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Old 07-18-14, 08:21 AM   #6
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Originally Posted by Pisces View Post
Great, start giving ideas to Bernard on how to use that spiral slide while he is on watch duty.


- But... I'm taking wind measurements, herr kaleun!! -
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Old 07-19-14, 12:37 AM   #7
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You will notice them on some car antennas too. It forces the resistance to move along the surface rather than against it. It supposedly also reduced the wake.
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Old 07-19-14, 02:33 AM   #8
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Used in bridge construction too, IIRC.
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Old 07-19-14, 04:15 AM   #9
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and some brands of birthday candles.
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Old 07-19-14, 05:49 AM   #10
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For those still sliding around in circles around the periscope mast trying to figure out what is meant in this topic:

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