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

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

Steve
desirableroasted
07-17-14, 07:06 PM
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.
Pisces
07-18-14, 07:19 AM
...
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. :/\\!!
banryu79
07-18-14, 08:21 AM
Great, start giving ideas to Bernard on how to use that spiral slide while he is on watch duty. :/\\!!
:har:

- But... I'm taking wind measurements, herr kaleun!! -
Bernard
Archer7seven
07-19-14, 12:37 AM
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.
d@rk51d3
07-19-14, 02:33 AM
Used in bridge construction too, IIRC.
desirableroasted
07-19-14, 04:15 AM
and some brands of birthday candles.
Pisces
07-19-14, 05:49 AM
For those still sliding around in circles around the periscope mast trying to figure out what is meant in this topic:

http://www.uboataces.com/photos/2005914216133225.jpg