On May 21, 9:40 am, n <1...@[EMAIL PROTECTED]
> wrote:
> On Wed, 21 May 2008 01:39:22 -0700, Buy_Sell wrote:
> > I was researching something on the net and happened to find this
> > website. http://www.zakpro.com/Tip_fins.html
>
> > An idea crossed my mind when I saw this. I work for the airlines and
> > we use wing tips on all of our aircraft to help with efficiency etc.
> > When you consider the cost of fuel lately and the number of airlines
> > that are going bankrupt, you come to the conclusion that any idea that
> > saves energy and gets you more mileage and possibly speed, might be
> > worth having a look at.
>
> > Ok, the website is talking about modifying boat props by putting
> > winglets on the tip of each prop blade. I would be curious to see if
> > that same idea could be done on a hovercraft prop or fan? If it works
> > on aircraft wings and boat props, then why not use the same idea on a
> > hovercraft system. This idea might be worth checking out.
>
> Not necessary for ducted props, if all is built well.
>
> --
The winglets are trying to do the same thing a duct does. I think the
duct would do it much better, assuming you have tight consistent
clearance on a properly shaped duct.
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