#4254424 - 04/30/16 12:44 AM
Re: Science Channel Impossible Engineering: Nuclear Submarine.
[Re: CyBerkut]
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Joined: Jan 2009
Posts: 5,699
NavyNuke99
One Man Wolfpack
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One Man Wolfpack
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Raleigh, NC
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The Jack was an experiment seeking a quieter result by getting rid of the reduction gears and using two concentric counter rotating shafts (and screws) powered by a low speed steam turbine. The downside being that with no reduction gears (and therefor no clutch) the main engine steam turbine could not be disconnected from the screw... so there was no Emergency Propulsion Motor to act as an alternative method of turning the screw.
All of the submarines in class had a "Secondary Propulsion Motor" that was hydraulically extended out of the bottom of the hull when needed. It was mainly there for maneuvering to, and away from, the pier. For the Jack, the SPM was also our Emergency Propulsion in the event of a loss of the main engine. Due to this 'work around' for emergency propulsion, the Jack was given the larger SPM utilized on Fleet Ballistic Missile subs, as well as the larger Emergency Diesel Generator that FBM's used. We were also equipped with 3 Ship's Service Motor Generators instead of the usual 2.
Whoa, I didn't know they'd played around with that prior to the Narwhal. Several of my Prototype instructors came directly from decommissioning Narwhal, and the stories they told... Made me wish I'd been born about 10 years earlier. Also, where the heck did they put the third SSMG?? It's a shame your reunion group wasn't able to get a tour of Maneuvering on a Virginia- it's a very, very far cry from an S5W, that's for sure!
" And any man who may be asked in this century what he did to make his life worthwhile, I think can respond with a good deal of pride and satisfaction: 'I served in the United States Navy.'"- John F. Kennedy
"NUKE-ular. It's pronounced NUKE-ular."- Homer Simpson
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#4254432 - 04/30/16 01:13 AM
Re: Science Channel Impossible Engineering: Nuclear Submarine.
[Re: NavyNuke99]
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Joined: Jul 2009
Posts: 9,619
CyBerkut
Administrator
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Florida
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The Jack was an experiment seeking a quieter result by getting rid of the reduction gears and using two concentric counter rotating shafts (and screws) powered by a low speed steam turbine. The downside being that with no reduction gears (and therefor no clutch) the main engine steam turbine could not be disconnected from the screw... so there was no Emergency Propulsion Motor to act as an alternative method of turning the screw.
All of the submarines in class had a "Secondary Propulsion Motor" that was hydraulically extended out of the bottom of the hull when needed. It was mainly there for maneuvering to, and away from, the pier. For the Jack, the SPM was also our Emergency Propulsion in the event of a loss of the main engine. Due to this 'work around' for emergency propulsion, the Jack was given the larger SPM utilized on Fleet Ballistic Missile subs, as well as the larger Emergency Diesel Generator that FBM's used. We were also equipped with 3 Ship's Service Motor Generators instead of the usual 2.
Whoa, I didn't know they'd played around with that prior to the Narwhal. Several of my Prototype instructors came directly from decommissioning Narwhal, and the stories they told... Made me wish I'd been born about 10 years earlier. Also, where the heck did they put the third SSMG?? The forward end of Engine Room Lower Level, up high. The third SSMG was connected to the TG-TG Tie bus and the Starboard DC bus. It made a weird electric plant lineup possible... Bring shore power in on the TG-TG tie bus and power the 3rd SSMG, then have both port and starboard protected vital busses simultaneously. It was nick-named the "Fillipini Flying Eagle" after some officer who had been on board earlier. It's a shame your reunion group wasn't able to get a tour of Maneuvering on a Virginia- it's a very, very far cry from an S5W, that's for sure!
Yes, it was a shame... They had the simulator for that as well at Groton, but being civilians at that point, we didn't have the needed clearance. The Virginia hadn't been commissioned yet, so it was actually the PCU Virginia simulator at that point. Still, being able to let the wives experience the motion simulators they had there was fun, and gave them a wee taste of the complexity, etc.
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#4254499 - 04/30/16 10:58 AM
Re: Science Channel Impossible Engineering: Nuclear Submarine.
[Re: CG2015]
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Joined: Jan 2001
Posts: 10,113
KraziKanuK
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Ottawa Canada
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CyBerkut, what class of boat were you on? I don't see a reply from CyBerkut? I never been to Connecticut. Now I want to go to see this: Had a tour with 3 other Canuck friends of an attack boat in 1978 while in New London.
There was only 16 squadrons of RAF fighters that used 100 octane during the BoB. The Fw190A could not fly with the outer cannon removed. There was no Fw190A-8s flying with the JGs in 1945.
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#4254619 - 04/30/16 06:17 PM
Re: Science Channel Impossible Engineering: Nuclear Submarine.
[Re: CG2015]
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Joined: Sep 2001
Posts: 24,712
Dart
Measured in Llamathrusts
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Measured in Llamathrusts
Lifer
Joined: Sep 2001
Posts: 24,712
Alabaster, AL USA
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Sea trials up a submarine - the ultimate in "Hey, y'all, watch this!" *shudder* As to a woman being in charge of ensuring the quality of every wire, fitting, pipe and sheet of steel that goes into the construction of a submarine, I'd say that it's probably best. Women can be very picky, and that's what one would want, and they can usually find out when it's on sale.
Ha! Sexism used to my advantage!
The opinions of this poster are largely based on facts and portray a possible version of the actual events. More dumb stuff at http://www.darts-page.comFrom Laser: "The forum is the place where combat (real time) flight simulator fans come to play turn based strategy combat."
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#4515450 - 04/09/20 12:02 PM
Re: Science Channel Impossible Engineering: Nuclear Submarine.
[Re: VF9_Longbow]
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Joined: Jan 2011
Posts: 19
MadMike
Junior Member
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Junior Member
Joined: Jan 2011
Posts: 19
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I don't think the tour was the cause of that. They did an emergency surface / venting of all the ballast tanks which made it rocket up out of the water. They didn't check for surrounding surface contacts well enough though. It killed a high school student. I absolutely agree with you. The price of conventional energy is on the rise, due to the ever-widening gap between demands and supply. The main reason for such shortages is the depletion in natural resources, such as coal, which is the main fuel used for electrical energy generation. This fact has always interested and embarrassed me. I am now writing an essay on a topic related to Mechanical Engineering. At https://studydriver.com/mechanical-engineering-essay/, I found sample essays, reflections, and articles related to a topic that I needed for my research.
Last edited by MadMike; 04/19/20 07:34 AM.
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#4515757 - 04/11/20 05:15 AM
Re: Science Channel Impossible Engineering: Nuclear Submarine.
[Re: CG2015]
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Joined: Jul 2006
Posts: 707
Docjonel
Member
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I live not far from Electric Boat and the Groton sub base. I once asked a former skipper how deep they dove, knowing full well he would never answer such a question. "Very deep." How fast do they go? "Very fast." I asked with a smile on my face and he answered in the same manner.
"For what shall it profit a man, if he shall gain the whole world, and lose his own soul?" -- Mark 8:36
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#4515782 - 04/11/20 11:38 AM
Re: Science Channel Impossible Engineering: Nuclear Submarine.
[Re: Docjonel]
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Joined: Apr 2015
Posts: 13,735
F4UDash4
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SC
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I live not far from Electric Boat and the Groton sub base. I once asked a former skipper how deep they dove, knowing full well he would never answer such a question. "Very deep." How fast do they go? "Very fast." I asked with a smile on my face and he answered in the same manner. My nextdoor neighbor is a former submariner, USS Sunfish (SSN-649), and he's pretty much the same if you ask him any particulars about his experience.
"In the vast library of socialist books, there’s not a single volume on how to create wealth, only how to take and “redistribute” it.” - David Horowitz
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#4515798 - 04/11/20 01:17 PM
Re: Science Channel Impossible Engineering: Nuclear Submarine.
[Re: CG2015]
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Joined: May 2010
Posts: 5,534
Alicatt
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Ice Cold in Alex or Eating in ...
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Fellow hotel owner from the next village back home in Scotland was a Chief Petty Officer on the Conqueror during its voyage around the Falklands in 1982 and the man that fired the torpedoes at the Belgrano, I also had the exec from one of Conqueror's sister ships as a regular customer, both were always good for a tale or two. The hotel owner was known locally as "the man that sank the Belgrano" or Belgrano Bill (Unrelated link but about Bill Budding: Man jumps naked from burning house ) and a link to an oral history in the Imperial War Museum by some of the crew of the Conqueror including Bill https://www.iwm.org.uk/collections/item/object/80024877 (media not available online - you have to ask for it)
Chlanna nan con thigibh a so's gheibh sibh feoil Sons of the hound come here and get flesh Clan Cameron
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