[IC27A] Re: a rudder with a mind of it's own

Tue, 30 Mar 2010 12:42:18 -0700 

can one put a kort nozzle around an inboard prop?

--- In [email protected], captain...@... wrote:
>
> A Kort nozzle
>  
>  
>  
> In a message dated 3/30/2010 3:13:28 P.M. Eastern Daylight Time,  
> hardiman...@... writes:
> 
> 
> 
> What is that circular thingy around your outboard prop  called?  (and where 
> can I get one)
> 
> ~Dan Hardiman
> 
> ---  On Tue, 3/30/10, captain...@...  <captain...@...> wrote:
> 
> 
> From:  captain...@... <captain...@...>
> Subject: Re: [IC27A]  Re: a rudder with a mind of it's own
> To:  [email protected]
> Date: Tuesday, March 30, 2010, 2:47  PM
> 
> 
> 
> 
>  
> In a message dated 3/30/2010 2:41:39 P.M. Eastern Daylight Time,  
> alec...@... writes:
> 
>  
> 
> 
> Hi David,
> having also an outboard, going reverse is  really difficult. Could you give 
> us more precision on what kind of  tip etc where is it placed? Do you have 
> pictures or  drawings?
> Tks
> Alec
> 
> --- In _ic...@yahoogroups. com_ 
> (mip://0575f7c0/mc/[email protected]) ,  captaindah@ .. wrote:
> >
> > By experiment, I added a tip  to the base of my rudder's trailing edge. 
> > Over the years, I  extended that tip twice and am now satisfied with the 
> >  compensation it affords my rudder pressure. My outboard washes  directly 
> onto 
> > the rudder when in reverse. And though it  dynamically pressurizes my 
> rudder 
> > in that situation, I like  it as I know it is coming and it allows me to 
> > precisely  control my reversing situations. The tip is below the thrust 
> of my  
> > outboard which has a Kort nozzle which focuses its thrust  and eliminates 
> > propeller tip vortex.
> > 
> > David  Hoyt
> > Sovereignty
> > Catalina 27 #65
> >  ahsovereignty
> > 
> > 
> > In a message dated 3/30/2010  10:04:41 A.M. Eastern Daylight Time, 
> > joe@  writes:
> > 
> > 
> > 
> > 
> > 
> >  
> > I just can’t resist… Perhaps the best way to stop this  
> > problem 
> would be 
> > to cut off the head of the rudder as in  decapitation. I am betting you 
> > meant cavitation and spell  check â€Å"helped†you out. Cavitation is 
> when water 
> > swirls  into a funnel and air is sucked into the prop field and instead 
> of  
> > pushing water it is pushing air/water mix. 
> > Joe  McCary 
> > Aeolus II. #4795, West River, MD 
> >  _www.aeoluswestrive rwww._ (mip://019d1c30/ www.aeoluswestri ver.net) 
> >  joe at photoresponse dot com
> > 
> > 
> > 
> >  
> > From: ic...@yahoogroups. ic...@yahoogroups. <WB  ic...@yahoo IC27On 
> Behalf Of 
> > Sneddon, Keith - ES/IS.  
> > Under power from an inboard, the flow over the rudder is  usually at a 
> much 
> > higher velocity, and because of that plus  the proximity of the prop to 
> the 
> > rudder, is very turbulent  (small scale phenomena) plus not very 
> organized 
> > as per  direction (due to swirl, capitation,etc. ). 
> > 
> >  
> > 
> > 
> > 
> > 
> > __________ Information  from ESET NOD32 Antivirus, version of virus 
> > signature  database 4983 (20100329) __________
> > 
> > The message was  checked by ESET NOD32 Antivirus.
> > 
> > __http://www.eset. htt__ (http://www.eset.htt_/)  (_http://www.eset. 
> com/_ (http://www.eset.com/) )
> >
>

Reply via email to