Boat Design Forums  |  Boat Design Directory  |  Boat Design Gallery  |  Boat Design Book Store  |  Thanks to Our Site Sponsors

Go Back   Boat Design Forums > Design > OnBoard Electronics & Controls
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 08-24-2009, 06:24 AM
internetturk internetturk is offline
Junior Member
 
Join Date: Sep 2006
Rep: 10 Posts: 51
Location: Turkey
Hydrolic System for Spud

hi everybody,
I need some information about hydrolic system of the spud? Also I need some information about spud types.
Thanks,
Reply With Quote
  #2  
Old 08-24-2009, 09:49 AM
mark775
Guest
 
Posts: n/a
Mycorrhizal networks provide a potential pathway for the transfer of hydraulically lifted water between spuds.
Roots may be linked by shared or common mycorrhizal networks (CMNs) that constitute pathways for the transfer of resources. The movement of water by CMNs is potentially important to survival during drought, and the functional ecophysiological traits of individual mycorrhizals may be a component of this mechanism.
There are two fundamental methods by which water can move from one place to another: Diffusion and Bulk Flow.While gases can be compressed into smaller and smaller spaces, liquid water is not so compressible (some people even believe that a "boom" would occur when spuds achieve "plane" on a compressable media, but, of course not). Thus compression of water into a space surrounded by a cell wall produces turgor pressure. This form of hydraulic pressure is critical, for the opening and closing of stomata, flow processes in translocation in the phloem, exchange of materials within and between compartments, and for the rigidity and support for herbaceous (not supported by lignin in wood) plants. Turgor keeps petals and leaves extended into the air and prevents wilting.

Units of pressure are:
1 atmosphere = 14.7 lbs in-2 = 760 mm Hg = 1.013 bar = 0.1013 M Pa
typical tire pressure is 0.25 MPa. !

Capillarity, because of the slight charges of water moleules, and the fact that opposites attrect (water molecules obviously organize themselves through hydrogen bonds), because of diffusion but remember about bulk flow and its importance and osmosis and why water goes into the spud and not out!

Did you mean the "spud" that's for a boat? Others are certainly more qualified to tell...
Hydrolic System for Spud-potato-1-.jpg
Reply With Quote
  #3  
Old 08-30-2009, 04:39 PM
FAST FRED FAST FRED is offline
Senior Member
 
Join Date: Oct 2002
Rep: 700 Posts: 3,208
Location: Conn in summers , Ortona FL in winter , with big dock & room for O'nite stop .
Most of the spuds I have worked with are simply dropped in place and a deck crane pulls the spud to get underway.

IF you are talking about a self jacking spud barge , where the barge is lifted from the water a few feet by climbing up the spuds, the method I have seen is a rack welded on the spuds and a geared pinion lifts the barge.

But don't ask ME about the math to get this right!!

FF
Reply With Quote
Reply



Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
Barge with Spud internetturk Stability 3 03-17-2011 12:02 PM
Propulsion system Anilkumar Boat Design 0 01-27-2009 06:47 AM
FORSALE Gelcoat system/Resin System cbboatworks Marketplace 1 05-04-2007 05:52 PM
Hydrolic tranny problem IMSETFREE Diesel Engines 4 10-09-2006 03:49 AM
Exterior spud system for lcm8 landing craft bucanero Boat Design 2 09-12-2004 07:30 PM


All times are GMT -5. The time now is 02:46 AM.


Powered by: vBulletin Copyright ©2000 - 2012, Jelsoft Enterprises Ltd.
Web Site Design and Content Copyright ©1999 - 2012 Boat Design Net