 | The "not secret anymore" propellor on a Trident sub.| Modern Discuss The "not secret anymore" propellor on a Trident sub. in the Other Eras forums; Some guy found this at the Bangor Naval Yard while looking through Microsoft virtual earth. If the USN considered it ... |
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09-03-2007, 07:16 PM
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#2 | | Senior Member
Join Date: Jun 2007 Location: Pine Mountain Lake, California
Posts: 753
Country:  | Quote:
Originally Posted by syscom3  | They've definitely got a very scythe-like shape to them; not really surprising when you consider what the latest propellers look like. Must must make them more efficient and, I assume, quieter. | 
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09-03-2007, 10:24 PM
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#3 | | IP/Mech THE GREAT GAZOO
Join Date: Apr 2005 Location: Colorado, USA
Posts: 13,251
Country: | Pitch angles, blade thickness, blade warp and material are still an unknown. A dumb thing to do IMO but if it was that super secret it would of been covered...
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09-04-2007, 06:42 AM
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#4 | | Older Than Dirt
Join Date: Jul 2007 Location: Virginia Beach, Virginia
Posts: 5,057
Country: | Couldn't be too much of a secret if they left it open to prying eyes.
Joe has a point about composition, thickness of the blades, angles, etc.
Charles
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09-04-2007, 08:09 AM
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#5 | | Senior Member
Join Date: Mar 2006 Location: Phila, Pa
Posts: 2,525
Country: | Yeah, agree with Joe. So they know the basics of the design. The bad guys out there have probably figured that out by now. But the details (as listed above) is where the real info is. And that picture isn't going to help.
Agree, should've been covered up. Not a great big deal that it wasn't. | |
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09-04-2007, 09:57 AM
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#6 | | aka Dickcheese
Join Date: Apr 2005 Location: Washington State
Posts: 10,494
Country: | Worked at Todd Shipyards while in college. They had an old fast frigate that I worked a refit. They even covered up that old gals propeller.
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09-04-2007, 01:18 PM
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#7 | | Der Crewchief
Join Date: Nov 2004 Location: Ansbach, Germany
Posts: 29,856
Country:  | By looking at it, it looks similiar to most modern sub props.
I think Joe is right and the real "secret" in it is the pitch angles, blade thickness, blade warp and material. Those are still unknown.
__________________  US Army Blackhawk Crewchief 2000-2006 Classic ww2aircraft.net quotes: fly boy said: "isn't that the first jet bomber? becasue i have flown one in a flight sim before and i know how it handles" "wait what ok who made the b-2 crash come on people that messed up its a b-2" "ah yes the mistel those things are so annoying is games and in real life" | |
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09-04-2007, 01:42 PM
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#8 | | Senior Member
Join Date: Dec 2006 Location: Fresno, CA
Posts: 2,401
Country: | Perhaps it's dis-information..
The prop could be a fake....
You have to wonder how long props will be practical anyway with advances in magnetism and superconductivity ... How far off are engines with no moving parts?
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Last edited by comiso90 : 09-04-2007 at 02:47 PM.
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09-04-2007, 02:07 PM
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#9 | | Der Crewchief
Join Date: Nov 2004 Location: Ansbach, Germany
Posts: 29,856
Country: | That could be true as well.
__________________ US Army Blackhawk Crewchief 2000-2006 Classic ww2aircraft.net quotes: fly boy said: "isn't that the first jet bomber? becasue i have flown one in a flight sim before and i know how it handles" "wait what ok who made the b-2 crash come on people that messed up its a b-2" "ah yes the mistel those things are so annoying is games and in real life" | |
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09-04-2007, 02:49 PM
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#10 | | Senior Member
Join Date: Dec 2006 Location: Fresno, CA
Posts: 2,401
Country: | from wiki:
The magnetohydrodynamic drive, or "caterpillar drive", which has no moving parts was popularized as a submarine propulsion system by the movie version of The Hunt for Red October, written by Tom Clancy, which portrayed it as a virtually silent system.
Although experimental surface ships have been built with this propulsion system, speeds have not been as high as expected. In addition, the drive system can induce bubbles to form, compromising stealth, and the low efficiency leads to very high required reactor powers. These factors make it unlikely to be considered for any military purpose.
But who knows, I'd like to believe there is a purpose to showing the prop
.
__________________ “Despite the threat of SAMs and increasing visibility on 31 January 1991, one gunship opted to stay and continue to protect the Marines. A SAM subsequently shot down this AC-130H, call sign Spirit 03. All 14 crew members of Spirit 03 perished." www.NewMediaPerspective.com | |
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09-04-2007, 03:27 PM
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#11 | | Senior Member
Join Date: May 2007
Posts: 1,448
Country:  | One thing is certain, satellite imagery has improved in 20 yrs!
Remember 'RAM-K' from 1987? They produced colourful images, 3-views, performance estimates and dimensions (based on the concrete squares!) from this satellite shot.  | |
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09-04-2007, 03:27 PM
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#12 | | Senior Member
Join Date: Feb 2006 Location: Colorado, USA
Posts: 1,506
Country: | George Bush:
"Here is a fake prop Putin. Just you don't know it. Heh, Heh, Heh, Heh."
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