SUBMARINEMUSEUMS.ORG

Welcome, Guest. Please login or register.
June 18, 2018, 03:29:42 AM

Login with username, password and session length
Search:     Advanced search
submarineshop.com" width="230" height="32
11074 Posts in 1379 Topics by 184 Members
Latest Member: SonofaClamagoreVet
* Home Help Search Calendar Personal Messages Members Login Register
+  SUBMARINEMUSEUMS.ORG Forum
|-+  General Boards
| |-+  Submarine Related Chatter
| | |-+  Flank speed
« previous next »
Pages: [1] Go Down Print
Author Topic: Flank speed  (Read 2554 times)
DaveyJ576
Seaman Apprentice
*

Total BZs: 1
Offline Offline

Posts: 4


View Profile
« on: February 09, 2010, 06:34:26 PM »

Okay, I am having a major brain fart.

What was the engine/battery combination that was necessary to get a flank bell? Obviously you needed four engines on line, but I can't remember what else was needed to get to a flank bell. The battery had to be lined up differently, but was it series or parallel? Getting old sucks. Memory is the first thing to go!

Thanks

Dave
Logged
Lance Dean
USS Drum Fan
Forum Administrator
*

Total BZs: 10
Offline Offline

Posts: 1534


John calls me "Gunner"


View Profile WWW
« Reply #1 on: February 11, 2010, 08:59:43 AM »

I have no idea.  I would lean towards the batteries being lined up in parallel for flank.
Logged

Rick
Former Director, Muskogee War Memorial
Chief Petty Officer
*

Total BZs: 5
Offline Offline

Posts: 815


View Profile
« Reply #2 on: February 16, 2010, 09:15:11 AM »

I am dusting some old electronic theroy our now...

as I recall If you have 2 power sourced in series you increase you voltage, if they are in paralell you increase your current.   This would tell me that you would want them in parallel to increase the overa ll work force (current). 
Logged
Mark Sarsfield
Former USS Batfish Volunteer
Chief Petty Officer
*

Total BZs: 9
Offline Offline

Posts: 1532



View Profile
« Reply #3 on: February 17, 2010, 04:39:28 PM »

I agree with Rick.  The motors will always run on the same input voltage regardless of speed.  So, a faster screw means more current being applied.  Thus, a parallel hook-up.
Logged


Regards,
Mark Sarsfield
USS Batfish reenactor



"If you have one bucket that can hold 5 gallons and one bucket that can hold 2 gallons, how many buckets do you have?" - IQ test from Idiocracy
Paul Farace
USS Cod Volunteer
Chief Petty Officer
*

Total BZs: 12
Offline Offline

Posts: 572



View Profile
« Reply #4 on: March 01, 2010, 10:13:30 AM »

Are you preparing to get underway? If so, can I go along?   smitten

-- I'll bring a paddle for that extra half-knot of speed...
Logged

Johnny Cash's third cousin, twice removed
JTheotonio
Chief Petty Officer
*

Total BZs: 8
Offline Offline

Posts: 771



View Profile WWW
« Reply #5 on: March 16, 2010, 11:34:06 AM »

Running parallel to increase current - gives more torquing power, more turns, if you do this you will decrease the ampere-hour rating of the battery, meaning it aint going to last too long.

from the manual:
Various combinations of armatures in series or in parallel, including the coupling of all four motors in series for dead slow operation, may be obtained, for either surface or submerged operation, through the main control cubicle.

For surface operation, motor speed control is accomplished by controlling the generator speed and shunt field, thus varying the voltage supplied. When submerged, speed is controlled by varying the motor shunt field or by connecting the motors in different combinations of series and parallel. Reverse operation is accomplished by reversing the direction of the flow of current in the motor armature circuit.

For surface operation, using the various combinations of armatures and taking power from the main generators, the motors develop from 20 hp to 2700 hp per propeller shaft at speeds ranging from approximately 67 rpm to 282 rpm.
For submerged operation, using various combinations of armatures and taking power from the batteries, the motors develop power ranging from 30 hp to 1719 hp per propeller shaft and give a speed range from 38 rpm to 219 rpm.
Logged

-----
From the Forward Torpedo Room

John
Pages: [1] Go Up Print 
« previous next »
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.21 | SMF © 2006-2007, Simple Machines Valid XHTML 1.0! Valid CSS!
USSVI LIB Restoration Supporter HNSA USSVWWII


Google last visited this page May 12, 2018, 12:43:23 PM