Re: [ATM] Re: synthetic jets

[Dale Eason <atmpob@yahoo.com>]

Thanks James I stand enlighted.  The tuneing is to
create vortexes which is different than that needed to
create a specific pitch.

Dale Eason

--- James Lerch <jlerch1@tampabay.rr.com> wrote:
> ----- Original Message ----- 
> From: "Dale Eason" <atmpob@yahoo.com>
> 
> 
> > If it was tuned to the 100 Hz they talk about you
> > would need a tube 4 ft long.  I know because I
> built a
> > pipe organ.  If it was closed on one end but not
> > usefull in this case it would only need to be 2 ft
> > long.
> 
> For just a pipe, this would be true.
> 
> In their pictures I see a tiny ported "speaker box".
>   As a quick experiment, I
> went here:
>
http://www.linearteam.dk/default.aspx?pageid=ventcalculator
> 
> and came up with the following to get a box with a
> resonance of 100hz
> 
> 0.5litre box, with 10 ports, each 1mm diameter and
> 16mm in length.
> 
> Unfortunately, I haven't found any software to model
> boxes smaller than 1/2
> liter.
> 
> Anyway, who knows if this would be of any use for us
> ATMs, but it is
> "Interesting"..
> 
> James
> 
> 
> 
> 
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