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Columbia Class attributes |
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Rontini599 
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Joined: 23 Aug 2016 Location: Sheridan, WY Status: Offline Points: 723 |
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 Topic: Columbia Class attributesPosted: 30 May 2018 at 3:28pm |
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1. Electric Propulsion-no reduction gears-much quieter 2. X shape stern control surfaces with stern planes inside the housing of the propulsor (water jet) drive system. (No prop) 3. Maneuvering Room area is 3 levels. Top level is Advanced Seal Delivery System. 4. Retractable bow (sail planes) 5. 6 mast sail vs Ohio's 10. 6. Bow Dome is composite material to better pass signals through 7. Same length as Ohio but 1 foot wider 8. HY100 Stainless hull coated with rubber material 9. New reactor control rod surfaces for better reactor control. 10. 42 year life 11. 2027 should see the first one in the water. 12 to replace current 16 Ohios. Because of increased reactor core life, less overhauls, thus balancing out the 12/16 ratio. 12. D-5 Trident II missiles 13. First cost is $6.2 billion then down to $4.2 billion
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My heroes wear dog tags, not shoulder pads
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SaltiDawg
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Joined: 03 Jan 2016 Location: Rockville, MD Status: Offline Points: 2866 |
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Posted: 30 May 2018 at 6:49pm |
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Ron, The Columbia Class will have a ducted propulsor (Prop.). We examined moving the aft control surfaces inboard on ducted propulsors years ago.
Edited by SaltiDawg - 09 Jun 2018 at 7:34pm |
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Sewer Pipe Snipe
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Joined: 04 Jan 2016 Location: Albany, GA Status: Offline Points: 5723 |
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Posted: 31 May 2018 at 8:37am |
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Sounds like Red October!
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Walt,
Had I done everything right throughout my life, the World wouldn't have noticed. |
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Curt
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Joined: 13 Jan 2016 Location: Virtinia Status: Offline Points: 575 |
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Posted: 31 May 2018 at 9:44am |
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Are you sure about:
1 Maneuvering Room area is 3 levels? 2 Retractable bow (sail planes)? |
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Thanks,
Curt |
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Rontini599
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Joined: 23 Aug 2016 Location: Sheridan, WY Status: Offline Points: 723 |
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Posted: 01 Jun 2018 at 10:38pm |
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Just reported what I read. I don't make this stuff up. Above Maneuvering was the Advanced Seal Delivery sytem and below is what looked like a pump room. US20070126297A1 - Shaftless propeller - Google Patentspatents.google.com/patent/US20070126297 A shaftless propeller may be made to ... A shaftless electrically driven propulsion propeller for use in an ... Ship pod-mounted hydrojet unit . .. Shaftless Propulsion Technology for Next-Generation Nuclear ... |
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My heroes wear dog tags, not shoulder pads
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SaltiDawg
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Joined: 03 Jan 2016 Location: Rockville, MD Status: Offline Points: 2866 |
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Posted: 02 Jun 2018 at 9:11pm |
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Respectfully, my post above stands, does it not?
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gerry
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Posted: 03 Jun 2018 at 12:48am |
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I'm guessing whoever wrote the article that Ron read confused "Maneuvering" with "Engine Room". Info I have seen on Colombia class had a large 3 level engine room, and there is indeed a SEAL staging/lockout facility in ERUL.
re: Bow planes vs sail planes - again, probably a non-submariner writing the article. Retractable... I can see foldable like the old fleet boats. Retractable though... seems like it would waste a lot of space and be a potential maintenance problem. *shrug* Shaftless propeller (again, terminology... wouldnt we call it a screw?) - now that's voodoo. I mean, if you're turning a screw there has to be SOME sort of a shaft from the motor producing the motive force to the screw. Isnt a "propulsor" a different thing than a "propeller"? Aren't "propulsors" similar to a jet pump?
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MT2/SS
USS Simon Bolivar - SSBN 641 (B) USS Henry M. Jackson - SSBN 730 (B) USSVI - Wyoming Base |
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Flapper
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Joined: 04 Jan 2016 Location: Tucson AZ Status: Offline Points: 2086 |
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Posted: 03 Jun 2018 at 2:08pm |
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Bow planes are retractable to avoid damage while berthed and during close quarters surfaced maneuvering, and for blue-nose ops when surfacing through ice.
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ET1ss Nuke; 1962 - 1973. SSN-588, CVA-63, SSBN-629 BLUE, SSN-669 PLANKOWNER, FICPAC
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Flapper
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Posted: 03 Jun 2018 at 5:15pm |
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From the patent link Ron provided:
Each blade is attached to the inside of an annular ring, tips in toward common axis of rotation. Permanent magnets are mounted on outer rim of ring.  That 'shaftless' design improves flow efficiency a lot, and it reduces cavitation significantly. The unit is 'spun up by big electromagnet coils contained in the outer housing of the propulsor assembly. The shaftless direct electric drive allows elimination of the noisy reduction gears in current use. Edited by Flapper - 03 Jun 2018 at 5:22pm |
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ET1ss Nuke; 1962 - 1973. SSN-588, CVA-63, SSBN-629 BLUE, SSN-669 PLANKOWNER, FICPAC
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SaltiDawg
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Joined: 03 Jan 2016 Location: Rockville, MD Status: Offline Points: 2866 |
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Posted: 04 Jun 2018 at 7:56pm |
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No disrespect, but that Google Pattern has nothing to do with the SSBN(X). it is for a motorized propulsor in size up to 24Kw. Edited by SaltiDawg - 09 Jun 2018 at 7:35pm |
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