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Posted for "Lorn H. Olsen" <lorn@dynacomm.ws>:
Bill, two other options- put in a small amount of flaps 5-10 deg (take
them out of reflex?) under 140 knots or so. This should not be too much
of stress on the flaps- ie, just like the speed/extension limits on your
9-5 plane.
Hmmm, I go out of reflex at gear speed (120kt). You go out at 140? Any
problems?
I don't think that coming out of reflex causes any stress on the flap system at all. I put up to 10 degrees of flap down at anywhere from 120 to 160 kts. There is no real pressure on the flaps at this small angle. Let me take that back. The amount of pressure is:
at 5 degrees, sin( 5 degree) = 8.7%
at 10 degrees, sin(10 degree) = 17.4%
at 45 degrees, sin(45 degree) = 70.7%
Therefore I am applying up to 1/4 of the force on the flaps that would be placed on them if they were down 45 degrees. That is a little higher than I thought. I will try to stay at 5 degrees until under 140 kts. So far though, no trouble.
--
Lorn H. 'Feathers' Olsen, MAA, DynaComm, Corp.
248-478-4301, mailto:lorn@dynacomm.ws
LNC2, O-320-D1F, N31161, Y47, SE Michigan
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