prop shrouds

I don't mind kicking a virtual hornet's nest.I'll use a hi tech solution
you know like a virtual can of raid
If it's ignorance is a problem,then information can cure that one very easily'

stewart

 

Stewy,

You don't seem to be able, or willing, to answer any of my questions.

Let me try one more, but don't answer it if you're not comfortable:

How old are you? You know, what is your age?

-Tom

 

I'm not getting involved in this banter, but just going to suggest someone looking up the proper application for a kort nozzle, and then also ask why race boats don't use them if they are so great for high speed?

 

In the UK, gas is not gasoline. That would be petrol.

 

Gas turbine.. not gasoline. Some gas turbines can burn about every combustible fluid from terpentine to bunker oil, so there is a possibility burn gasoline too but that still however a gas turbine...

 

to one and all and 'anthony'

Anthony:''' oft its said the apple falls not far from the tree''''
I can only express hope one day you may communicate with your son


I am happily married over 2o some odd years thank you very much




I think a few things need to be said to stabilize the 'deck' Firstly, I opened a thread for obvious reasons: to talk about it! I wish for the discussion to be fruitful in order for coherent thought. Perhaps even a meaningful mutual sharing of ideas and concepts that might be applied to marine propulsion.
The mere mention of propeller guards is akin to throwing a mouse into a herd of elephants... you'd think it was a TABOO.
I am sorry I haven't addressed Tommy's queries as of yet but I will ....
I will fill out my profile for interested parties .. so he can see even old men.... misspell.
I will not dumb down my syntax. Sorry if you don't like it I will promise to spell check (Is that what those lil redlines are...)
I will try to watch those nasty run on sentences too. I didn't know it was a criminal act in Gonzo world. But in truth, your 'style' I personally find to be quite acerbic sir.

Stewart Loeblich

 

You keep on being obnoxious. It is not TABOO, it is you not answering any of the direct questions posted. Please back some of your claims. For example that the difference in propeller or impeller ducting is the only cause of the difference in speed between a submarine and a torpedo.

 

your questions are ridiculous gonzo as is your obnoxious style

 

It would cost a great deal of money to put a huge cowling for a nuke boat's huge prop.
The reason it is used in a torpedo is to optimize its high speed performance.
It's not rocket science, its using a multiple propeller system on one shaft.
That's causes turbulence inherently of itself the cowling provides a solution so the multiple propeller system's turbulence problems.
I understand confusion on this concept but please try to think out of the box a little

Why do you think the military uses multiple propellers?
for ultimate speed and power ratio . I was trying to bring something forward that could possible help everyone. We all want more speed, and no loss of power.So common goals can equal a common good.
Let's act like adults here. Gonzo the trash talk is what is truly obnoxious

gasoline not gas my mistake
slang seems to spin it worked, just like throwing gas 'er petrol on the fire to blaze bright...

a bemused
Stewart

 

Well Tom I'm 57 and very comfortable so what.....

 

Waterwar: like many other dilettantes, instead of answering questions about your claims you resort to personal attacks.

 

One reason, and probably the major reason, contra-rotating propellors are used on torpedos to keep the torpedo from spinning. A torpedo with a single propellor needs fins to counteract the torque of the propellor. Contra-rotating propellors can also be more efficient, particularly at higher speeds. Shrouds are not required by contra-rotating propellors. Most US Navy torpedos have had contra-rotating propellors without shrouds. An official history of US torpedo developmen, now de-classified, is available at http://www.hnsa.org/doc/jolie/index.htm

 

Waterwar, the topic is a good one and has been ongoing one over the years, it's an interesting topic and worth some new input The problem i think was in your excitement to create debate you took the wrong approach by using the tool of confrontentation to create debate instead of querry. We're probably all guilty of this at some point in our life, it's usually a sign of higher levels of tetosterone thus the question on your age.Good for you if your levels are high but bad for you if you want meaningful debate. Thats why old guys mellow and become more patient and wise. So me thinks if it's not too late you could re tone your post and a transfer of info could possibly occur. Geo.

A yacht is not defined by the vessel but by the care and love of her owner.

 

It helps to provide data to back up claims that the conventional understanding is all wrong, particularly when a topic has been studied for many decades.

 

Do you have ANY data to back up this claim other than the simple logic:
1) Subs and torpedos are fast.
2) Some fast subs and torpedos have shrouded propellors.
3) Therefore fast subs and torpedos ARE fast because the have shrouded propellors.

Conclusion 3) is flawed. Fast subs and torpedos MAY be fast beause they have shrouded propellors, BUT they MAY be fast for other reasons.
AND it is possible that they might be faster if designed without the shroud.

Again, anything else to support your claim?