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Flaps VS Airbrakes/Spoilers
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August 17th 11, 03:44 PM posted to rec.aviation.soaring
Eric Greenwell[_4_]
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Flaps VS Airbrakes/Spoilers
On 8/17/2011 5:47 AM,
wrote:
Joe Pilot didn't put the flaps there, Bob the designer did. He had a
"purpose", which was probably to lower the stall speed and thus the
approach speed and all the other good things that come from that.
I kind of disagree.
From my experience, the benefit of "real" landing flaps is very high
drag such that speed increases only slightly when approach is
steepened and drops off quickly during round out and landing.
They also have the very positive effect of reducing the angle of
attack at the tip, giving much better roll response. Look at a '20 in
full "crow" mode and the tips almost look like they are bending down
relative to inboard part of the wing.
Not only do they look like it, they are, in fact, bent down a bit. I saw
that on my ASW 20 C, and I see it on my ASH 26 E.
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Eric Greenwell - Washington State, USA (change ".netto" to ".us" to
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