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Originally Posted by timmyg00
I can hear it now: "Why not put the sensors in a UUV or pod on a tow-cable that you let float to the surface?" For one thing, a cable can break or be fouled, rendering the UUV/Pod useless. For another, a UUV/Pod will be less stable at PD or the surface than the sub itself, more at the mercy of rough seas than the larger platform.
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Originally Posted by Dr.Sid
What about sensors on floating platform connected by cable ?.... Or something like UUVs equipped with cameras, RWR or Radar masts.
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See, i knew somebody would say that...
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Originally Posted by Dr.Sid
Sure .. snorkel is a problem, but you don't need it that much.
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Right, and when you need it and don't have it, how would you feel about it then? Pretty chagrinned that you let the bonehead engineers back on land sell you a sub with no snorkel, after you suffer a major power plant casualty, battery runs low, and you with no diesel generator...
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Originally Posted by Dr.Sid
Or even better, UAV (unmaned airborne vehicle) inside UUV, with both radar and cameras.
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and how do you propose to control it without radio masts?
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Originally Posted by Dr.Sid
Or just long mast supported with wires .. like snorkel on german subs - folded backward on the hull (or inside hull cavity).
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More drag and self-noise. Not an option. This is why submarine designers (including the Germans, with the Type XXI sub) removed external projections, such as guns and railings, and moved antennas and sensors into a
protected, streamlined sail.
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Originally Posted by Bubblehead Nuke
One reason for the sail is that the boat can be deeper and still pierce the surface interface. Thus the boat is less affected by wave action and surface tension/ducting.. If you place these masts and sensors in the hull, you have to have a MUCH longer mast, which will vibrate as it travels thru the water. Since you are talking a long, fairly stiff shaft, this means that you will have low frequency harmonics which travel better in the water. Also, you will be REALLY speed limited with this extra long mast supported from just one end. If you make the masts short so that these are not issues, then think of how close to the surface you will have to be. It would mean that anything over a state 2 or so sea would be impossible due to wave action.
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Much better technical explanation than mine.... typical nuke...
TG