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Ed,
Sounds like a do-able mod. Won't get any experimenting
done this week though, as I am off to Mojave to watch the ultimate
experimenter, Mr. Rutan, create an astronaut. You can check it out
at www.scaled.com
Bill Eslick
-------Original
Message-------
Date: 06/19/04
19:36:17
Subject: [FlyRotary]
Re: Static port location
You might get half of a pea (not kidding
- they did this on the Spitfire in WWII) and try pasting approx 1/8"
(final distance may vary) behind your fuselage static
port. This could reduce some of the "suction" that is causing your
altimeter to read high by building up positive pressure in from of the
pea and increasing the pressure at the port. Actually, the
Brits stuck 1/2 peas on the Spitfire in an attempt to find out where
flush rivets may a difference or not - so I read.
Any half hemisphere, small object work
probably do if you are fresh out of dried peas
Ed Anderson
RV-6A N494BW Rotary
Powered
Matthews, NC
----- Original Message -----
Sent: Saturday, June 19, 2004 7:36
PM
Subject: [FlyRotary] Re: Static
port location
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Ed,
I'd be real happy with that error. Today I made a
static probe and mounted it under the wing like the pitot
probe. It has 8 holes, 1/16" diameter. They are in
pairs about 1/4" apart, and each pair is 90 degrees off the last
pair. (Confused yet?) It is a removable probe so that I can
try different versions until I find the best. This one is
blunt-nosed (courtesy of J-B Kwik).
This version reduced the altimeter error to 50-70 ft high and
the indicated to around 7 KTs too high.
Not sure what to try for the next version.
Bill Eslick
I'm surprised your ASI is that far
off Bill. I'm using the same pop rivet static ports
(one each side) and the ASI has been accurate to within 2 mph or
less at all speeds I've checked.
Tracy
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