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craigb(at)onthenet.com.au
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 Posted: Tue May 20, 2008 11:50 pm Post subject: Negative Flap |
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For those of you that have set up to run negative flap for cruise flight i
have a couple of questions
firstly did you allow for this in the initial set up of your flaps on the
wings, or was this just done
by moving the actuator slightly and taking up the small gap you are supposed
to leave during the build.
secondly how much does this close the original gap up at say minus 2
degrees, and how much difference
did it make to cruise performance.
Why i ask is I was wondering if the extra performance being seen is just
simply the effect of sealing
the gap behind the flaps when they hit the back of the wing at say minus 2,
which some of you good
people are experimenting with now, and do i bother investing the time in
trying to find good way to seal
the flaps when I will get the same result with negative flap
craig
Checked by AVG.
4:45 PM
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fklein(at)orcasonline.com
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| Posted: Wed May 21, 2008 11:05 am Post subject: Negative Flap |
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Craig,
I look forward to meaningful responses to the questions you raise.
FWIW, I've maintained a flap gap of .150 inches w/ 2 tongue depressor
sticks taped together; when I remove them, the angle of the flap (when
fully retracted) changes by 1.2 degrees.
Fred
On Wednesday, May 21, 2008, at 00:50 US/Pacific, craig bastin wrote:
| Quote: |
<craigb(at)onthenet.com.au>
For those of you that have set up to run negative flap for cruise
flight i
have a couple of questions
firstly did you allow for this in the initial set up of your flaps on
the
wings, or was this just done
by moving the actuator slightly and taking up the small gap you are
supposed
to leave during the build.
secondly how much does this close the original gap up at say minus 2
degrees, and how much difference
did it make to cruise performance.
Why i ask is I was wondering if the extra performance being seen is
just
simply the effect of sealing
the gap behind the flaps when they hit the back of the wing at say
minus 2,
which some of you good
people are experimenting with now, and do i bother investing the time
in
trying to find good way to seal
the flaps when I will get the same result with negative flap
craig
Checked by AVG.
4:45 PM
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craigb(at)onthenet.com.au
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