Quote:
Originally Posted by koputai
I'm not interested in getting in to a fight here, especially on a topic way off that of these forums.
YOU said:
"used for tracking submarines with some cute water penetrating long wave length radar."
Which is fanciful.
YOU said:
"these subs are capable of speeds in excess of 160 KMH"
Which is just plain bullsh**.
Let alone all the Kursk and associated conspiracy theory stuff.
My side of this discussion ends here.
Cheers,
Jason.
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Here is an answer to fanciful for you...
<A href="http://www.agu.org/cgi-bin/SFgate/SFgate?&listenv=table&multiple=1&ra nge=1&directget=1&application=sm99& database=%2Fdata%2Fepubs%2Fwais%2Fi ndexes%2Fsm99%2Fsm99&maxhits=200&=" OS51A-03">http://www.agu.org/cgi-bin/SFgate/SFgate?&listenv=table&multiple=1&ra nge=1&directget=1&application=sm99& database=%2Fdata%2Fepubs%2Fwais%2Fi ndexes%2Fsm99%2Fsm99&maxhits=200&=" OS51A-03"
I'd pay attention to the part that reads...
"
In the meantime, our vast ocean floors... lag farther and farther behind, as ships ensonify the seafloor at meters per second, vs km per second for electromagnetic-imaging spacecraft. The GEOSAT and ERS radar altimetry missions have produced the best-resolution, homogenous global-ocean images, revealing the geoid down to spatial wavelengths of ca 15 km, a vast improvement over previous images."
Check this out as well...
http://earth.esa.int/workshops/venic...ticipants/431/
Especially the part...
"It was the ERS missions, however, which provided the first altimetric coverage of the high Arctic that allowed the first views of the polar ocean floor and of a highly dynamic sea ice cover to be revealed."
I can only imagine what a purpose built milsat designed souly for looking for subs would be capable of, but I bet it does a damn good job!
Now about nuke subs being faster than your average family car.
At 900m deep there is 1294 PSI pressure on the hull! This pressure, although great, allows some remarkable things to happen. All that pressure allows the sub to avoid propellor cavitation, which is the main source of position giving away noise. The deeper they run, the less prone a subs prop, or its hull, is likely to break from laminar flow, and higher surface drag, and then create turbulent flow and cavitation noise... Run deep = run fast.
http://query.nytimes.com/gst/fullpag...pagewanted=all
As for my information of submarines being capable of speeds in excess of 160 kmh, check this thread, and any others you can find....
http://www.defencetalk.com/forums/showthread.php?t=3701
Some there report Akula Class subs being recorded doing 93KMH, several years ago.
And if a Tuna fish can do 50 knots, then a new design nuke sub with maybe a 150+ MW powerplant, and laminar flow hull design, with a hull pressure of 1294 PSI on it to help that laminar flow, and prevent prop cavitation, it only has to find another 67KMH to get to 100MPH.
If you read some of the articles some guys are forwarding numbers of 100 knots, which would be 185KMH.
I might also mention that the US spy plane the SR71 Blackbird was classified and remained utterly top secret from the time it was designed and first flew in the 1950s, to when it first came out of the closet in the 1970s. I might also add that even though the SR71 Blackbird spy plane was decommisioned close to ten years ago its maximum speed STILL REMAINS CLASSIFIED. And, more importantly its a damn sight easier to hide a submarine and its top speed than it is an aircrafts. If you haven't noticed.
I love your thinking mate. If you don't think its possible nobody else can have done it.
I think more on the lines of nothing is impossible, it just takes lots longer and costs more. Which is perfect for the military.
