flyrotary@lancaironline.net Mailing List Archive

BF-109 - I thought that we were talking about the water radiators in the wings which does not have a boundary layer bleed. Chin scoops do not typically need a bleed because the boudary layer at the front of an aircraft is typically very thin. As a matter of fact, this is probably why 'wing radiators' do not need a bleed - the leading edge is very close. Still. the implication of many has been that the Spitfire had compromised water cooling - somehow I don't think so.

Ken Powell

-------------- Original message --------------

> Good point, Ernest. Forgot how far forward the inlet was on the ME109 - not
> been watching enough late WWII movies {:>).
>
> Ed
>
> Ed Anderson
> RV-6A N494BW Rotary Powered
> Matthews, NC
> ----- Original Message -----
> From: "Ernest Christley"
> To: "Rotary motors in aircraft"
> Sent: Tuesday, June 29, 2004 10:53 PM
> Subject: [FlyRotary] Re: BF-109F
>
>
> > kenpowell@comcast.net wrote:
> > > Hi Ed,
> > > I have also read this many times but have never seen a boundary layer
> bleed on a BF-109. I have considered method this for my RV-4 and looked at
> many pictures of the 109. Attached is a picture of an 'F' model.
> > > Ken Powell
> > >
> >
> > The scoop is right at the the front of the plane. The boundary layer is
> > going to be almost nill there to begin with. Compound that with the
> > fact that the air has been accelerated by the nose curving up, and that
> > the nose will be high when the cooling is need the most (climbout), so
> > that the air is injested more directly.
> >
> > The problem with the P-51 was that the scoop was much further back on
> > the plane, and the boundary layer had time to grow before it got there.
> >
> > --
> > http://www.ernest.isa-geek.org/
> > "Ignorance is mankinds normal state,
> > alleviated by information and experience."
> > Veeduber
> >
> > >> Homepage: http://www.flyrotary.com/
> > >> Archive: http://lancaironline.net/lists/flyrotary/List.html
> >
>
>
>
> >> Homepage: http://www.flyrotary.com/
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