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1. 08:25 AM - Multiple structures in the wind. (Steven Dortch)
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| Subject: | Multiple structures in the wind. |
Gentlemen, I have access to a buddy who is an aerodynamacist and pilot and
plane owner. He works at a well known boating school in Maryland.
I asked him about placing antennas and told him that AFTER I had my plane
up and flying I was looking for some aerodynamic cleanup and he todl me the
following.
First, the antenna must be placed first for reception and transmission and
then for aerodynamics. Near metal cabanes or struts makes the radio very
directional.
He had to look up what a Pietenpol Aircamper looks like.
His "Comments:
Solid wheel instead of the wire spokes are much better.
On bungee covers, don't use canvas, use plastic/fiberglass fairings. A flag
(canvas) in the wind has lots of drag.
A canvas front cockpit cover will help but think about making one out of
lightweight fiberglass and make it fit well.
Yes, to put fairings on the round tubes. Actually draw a real airfoil,
e.g., an NACA 0012 or 009 if it will fit. You can find the coordinates in
NACA Technical Report 824 or in a book by
Abbot and von Doenhoff or I can scan and send them to you. Fiberglass or
foam with a thin fiberglass cover would work. If you are good at sheet
metal work, then thin aluminum will also work. Look in the marine field for
fairings. I have seen fairings on sailboat shrouds, etc.
A friend at the airport has a Piet. I'll have to go look at his and see
what he has done."
Any Any other ides from the peanut gallery. we should be careful, we don't
want to exceed VNE in cruse.
--
Blue Skies,
Steve D
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