posted on Apr, 8 2005 @ 06:57 AM
Originally posted by rogue1
Sp paperplane, what propulsion system do you think is better, Props or Pump Jet Propulsors ?
depends on the type of sub and what you want to use it for, for SSN's and SSBN's, pumpjets win out everytime. They are much quieter, have a higher
power density/volume ratio, the rotating parts are enclosed (potected in shallow water and swimmers are safer round it). They are however more
complex to design and maintain, therefore the more expensive choice. It is only really the 3 big western navies that use them (US UK and France).
Russia and china have toyed with the idea but havent adopted it yet (as far as i know). I dont know of any DE or AIP subs that have them on as yet.
Props are easy to design and make reasonably quiet, they are also probably a little more robust. In the end it is up to the customer and the
designers to decide whats best for their needs.
You can kind of sea a pump jet in one of the pictures at:
[edit on 8-4-2005 by paperplane_uk]