Frans,
Thanks for posting the photos. That is an impressive scheme that you created,
especially as it obviously works. As a matter of interest, what difference do
you see in aircraft performance? Your cooling drag must be well down on the
standard scheme.
Jerry
On Oct 5, 2012, at 12:27 PM, Frans Veldman wrote:
> Hi everyone,
>
> I got numerous requests for pictures, so I assume this is of "general
> interest".
>
> I still plan to write an article about this, but so far I didn't find
> the time.
>
> So, for all of you who are through waiting, here some low quality
> pictures to get some idea of what I have done.
>
> I'm reluctant to show these pictures, these pictures were taken when the
> work was still in progress, to discuss these things in a private group.
> Since then the cowling has been cleaned up, received a new finish and
> paint. For the final pictures I will also choose a more appealing
> background and clean up the tools. ;-)
>
> On some of the pictures you still see two small holes where the original
> cowling vents once were. These holes proved to be unnecessary and have
> been eliminated in the final version.
>
> The two ram air inlets and radiator inlet are the only air entries in
> the cowling. The air exiting the radiator also takes the heat of the
> exhaust, turbo and silencer with it. No further cowling cooling was
> necessary.
>
> The two lower ram air inlets:
> The starboard inlet is for the engine air and via a butterfly valve to
> the intercooler.
> The port inlet is for cylinder cooling air.
>
> A few pictures show the cowl flap wide open. Due to the length of the
> cowl flap the angle is still moderate and it looks like it is only a
> little bit open.
>
> Also some pictures with the exhaust augmenter.
>
> And of course the interior of the cowling, to see how I have set up the
> intercooler and cylinder cooling.
>
> Frans
>
>
>
>
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