Paul wrote

Scoops like that don't work Jerry. If they did there would be no
need of boundary layer air bleeds like are found on all airplanes
built since World War two. What happened to the tunnel idea?

The pictures of air bleeds that I have seen seem to have been very
shallow perhaps only a quater of an inch or so.  How thick is the
boundary layer under the belly ?  Seems like a scoop hanging down
below this level  would be in clean air, and it would generate
considerable pressure to enter the inlet.  Like I was very careful to
say, these are just aluminum sheet metal that can be discarded and
new versions created fairly easily.  Perhaps in the end, I will have
just a scoop with an airbleed.  It would be the easiest of all
configurations to build.  How deep should the air bleed be?.   Jerry

Attached is a handy little program for computing boundary layer thickness at
any position on the fuselage.

Al Gietzen

                   Name: boundlay.exe
   boundlay.exe    Type: unspecified type (application/octet-stream)
               Encoding: base64

I am torn about broadcasting this Al. Do you have the site were people can
download it at their own risk?

Paul Lamar
 
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