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09-03-2007, 06:07 PM
| #1 | |
| Senior Member  Join Date: Jun 2005 Location: Orange County, CA
Posts: 9,504
| The "not secret anymore" propellor on a Trident sub. Quote:
Live Local Search
__________________ "Pilot to copilot..... what are those mountain goats doing up here in the clouds?" | |
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09-03-2007, 08:16 PM
| #2 |
| Senior Member  Join Date: Jun 2007 Location: Pine Mountain Lake, California
Posts: 981
| 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, 11:24 PM
| #3 |
| IP/Mech THE GREAT GAZOO   Join Date: Apr 2005 Location: Colorado, USA
Posts: 15,291
| 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...
__________________ "IF ITS RED OR DUSTY, DON'T TOUCH IT"  |
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09-04-2007, 07:42 AM
| #4 |
| Older Than Dirt  Join Date: Jul 2007 Location: Virginia Beach, Virginia
Posts: 6,550
| 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
__________________  I can only please one person per day. Today is not your day. Tomorrow doesn't look good either.... |
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09-04-2007, 09:09 AM
| #5 |
| Senior Member Join Date: Mar 2006 Location: Phila, Pa
Posts: 3,184
| 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, 10:57 AM
| #6 |
| aka Dickcheese  Join Date: Apr 2005 Location: Washington State
Posts: 12,842
| 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.
__________________  "Some people spend an entire lifetime wondering if they made a difference in the world. But, the [U.S.] Marines don't have that problem." -- Ronald Reagan Master of Duplicate Posts |
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09-04-2007, 02:18 PM
| #7 |
| Der Crewchief  Join Date: Nov 2004 Location: Ansbach, Germany
Posts: 31,700
| 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.
__________________  fly boy said: "isnt that the first jet bomber becasue i have flown one in a flight sim before and i know how it handles" syscom3 said: "In fact, UAVs are probably far safer than manned aircraft because they are always aware of whats going on and not distracted by things like coffee being spilled on a lap or "whys this light off, is the light bulb burned out?" |
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09-04-2007, 02:42 PM
| #8 |
| Senior Member  Join Date: Dec 2006 Location: FL
Posts: 3,097
| 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?
__________________ “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."   Last edited by comiso90; 09-04-2007 at 03:47 PM. |
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09-04-2007, 03:07 PM
| #9 |
| Der Crewchief Join Date: Nov 2004 Location: Ansbach, Germany
Posts: 31,700
| That could be true as well.
__________________ fly boy said: "isnt that the first jet bomber becasue i have flown one in a flight sim before and i know how it handles" syscom3 said: "In fact, UAVs are probably far safer than manned aircraft because they are always aware of whats going on and not distracted by things like coffee being spilled on a lap or "whys this light off, is the light bulb burned out?" |
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09-04-2007, 03:49 PM
| #10 |
| Senior Member Join Date: Dec 2006 Location: FL
Posts: 3,097
| 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." |
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09-04-2007, 04:27 PM
| #11 |
| Senior Member  Join Date: May 2007
Posts: 1,956
| 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, 04:27 PM
| #12 |
| Senior Member  Join Date: Feb 2006 Location: Colorado, USA
Posts: 1,853
| George Bush: "Here is a fake prop Putin. Just you don't know it. Heh, Heh, Heh, Heh."
__________________  "His motor's conked out!" "What's the differance, they're all Nazis!" "Luke, shut up!" "Fear the hook!" "Oh.....I wanna fly." "You mean the kind that go under water and fly up the stairs?" "What you doing? Oh Nooooo!" |
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