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03-12-06, 01:15 PM | #16 | |
Grey Wolf
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DOLPHIN 38 |
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03-12-06, 01:24 PM | #17 |
Mate
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i just saw, all the improved 688s have their planes on their hull.
All the 688s in SC are (i) improved. Above is the SSN-700 Dallas, a non improved one, and it has them on the sail. above is the USS Greenville, second to last of the 688(i) class. no planes on the sail. But i would really like to see them on the sail, to me it just looks better. |
03-12-06, 02:03 PM | #18 | |
Watch
Join Date: Jan 2005
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Mark Nagorniuk |
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03-12-06, 02:29 PM | #19 | |
Navy Seal
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03-12-06, 08:33 PM | #20 | ||
The Old Man
Join Date: Jul 2003
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Copyrighted from www.subguru.com |
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03-13-06, 08:01 AM | #21 | |
Navy Seal
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My mistake with the Virginia,
However, Quote:
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03-13-06, 08:05 AM | #22 |
Sub Test Pilot
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The al'fa had such a squat sail that if it turned full rudder at top speed it would well roll and roll imagine the crew inside a tumble dryer
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03-13-06, 09:32 AM | #23 |
Navy Seal
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Hmm, not sure about that...
Take a look at this http://203.10.217.104/publications/3...TO-TR-1622.pdf Page 33, apparently the squatter sail loses hydrodynamic efficiency. There is also a bit about snap roll but it is ambiguous as to whether he is referring to Russian or US sails. |
03-13-06, 08:49 PM | #24 |
Ocean Warrior
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Hmmm...That's interesting Xabba. Just a small question in regard to the Russian sail design. Doesn't it have less turbulent flow at the trailing edge than the American design due to the fact that it has more of a curvature (roundness) in shape? It may be less efficient than American sails hydrodynamically, but perhaps has a better shape in reducing hull flow noise? What is your opinion?
BTW, I had no idea the Russians intended the blended sail for roll risks when high speed maneuvering. But makes sense when you look at what subs like the Alfa could do. Sea Demon |
03-14-06, 02:30 AM | #25 | |
Sub Test Pilot
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Intresting read ive printed it out and have contacted a friend of mine to see its worth.
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03-14-06, 05:14 AM | #26 | ||
Navy Seal
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It seems we are confusing 'snap roll' with 'foil roll' Snap roll being a sudden departure foil roll being a result of water flowing round the sail as described in the quote. Size of sail does influence how much 'foil roll' you get and therefore Russian subs suffer from it less. This is shown with further clarification below. Quote:
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03-14-06, 06:58 AM | #27 |
Sub Test Pilot
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Seems that way, but having a large sail has some advantages.
For a start dont have to go so shallow at PD and un the risk of exposure (akula's do some times).
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09-17-20, 07:17 PM | #28 | |
Bilge Rat
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Quote:
The new sail design doesn't change the outward appearance of the sail compared to previous Virginia class submarines. |
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09-17-20, 08:56 PM | #29 |
Gefallen Engel U-666
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Welcome aboard!
JessIam!you are nominated for necro of the year,We've been waiting 14 years for this info!
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"Only two things are infinite; The Universe and human squirrelyness; and I'm not too sure about the Universe" |
09-17-20, 10:39 PM | #30 |
Born to Run Silent
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All right! Awesome, and it's not even a spammer. Good job!
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