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From: "Jack Ford" <jackoford@theofficenet.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-225080@logan.com>
Subject: Re: [FlyRotary] Fly cooling was Re: [FlyRotary] Re: Everybody ok?
Date: Thu, 24 Jun 2004 16:44:06 -0700
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Besides, in case it's not obvious, the system has too many bugs in it.
Jack Ford
----- Original Message -----
From: "Ed Anderson" <eanderson@carolina.rr.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Thursday, June 24, 2004 11:37 AM
Subject: [FlyRotary] Fly cooling was Re: [FlyRotary] Re: Everybody ok?


>
> Ed Anderson
> RV-6A N494BW Rotary Powered
> Matthews, NC
> ----- Original Message -----
> From: <echristley@nc.rr.com>
> To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
> Sent: Thursday, June 24, 2004 1:38 PM
> Subject: [FlyRotary] Re: Everybody ok?
>
>
> >
> >
> >
> > > Interesting trim actuator... how do you wire it in?
> > >
> > >      <M>
> > >
> > >
> > > Ernest Christley <echristley@nc.rr.com> wrote:
> > >
> > >  I've been trying to actually get some airplane
> > parts built.  Did
> > > somepainting this week.  Here's the result.
> > >
> > >
> >
> >
> > I guess the plan was to have an intelligent trim
> > actuator.  It was supposed to flap real hard as it
> > got close to the ground. No wires or switches to
> > worry about.
> >
> > Looks like I'll have to do some redesign, 'cause it
> > appears that the paint will kill the fl^H^Hactuator.
> >
> > Just had another flash of brilliance...Ed, do you
> > have any equations that would compute the cooling
> > ability of a streamlined duct ehnanced with flies!?!
> >
>
>
> Well, lets see.... yep, just found a formula for that design approach.
>
> It looks like that the enhance cooling would be proportional to the linear
> increase in the number of flies you could harness to fly in close
formation
> just behind the cooler core.  It should produce approx. 300% increase in
> cooling effectiveness for the typical evaporator core.  Unfortunately, the
> calculation also shows that the fly mass will go up to the cube of the
> number of flies used which means the gross weight of the cooling system
> would increase by approx. 2700% for the typical experimental.  Oh, here is
a
> foot note.  "...fly excrement covering the canopy proved to be a design
> challenge not yet overcome.."
>
> Well, looks like you could do it - but you wouldn't like the results {:>)
>
> Ed
>
>
>
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>