brien23
Cleared for Takeoff
Top of airspeed white arc going faster could cause structure damage. As you lower flaps a C-172 pitches down at what speed will the elevator not have enough up to pull out with full flaps down.
The initial lowering of flaps from 0 to 10 should cause you to pitch up slightly... It certainly does on every 172 I have flown. I would guess the elevator can overpower the flaps at most any speed that is still flying.
Top of airspeed white arc going faster could cause structure damage. As you lower flaps a C-172 pitches down at what speed will the elevator not have enough up to pull out with full flaps down.
ditto. It's like watching the lost in translation scene of the oceans 11 movie or whichever one it wasCan you ask that question in English?
...if you extend flaps at that speed or exceed that speed with flaps extended. That said, many airplanes still allow partial extension of flaps above the top of the white arc, e.g., many 172's allow 10 degrees of flap at 110 KIAS or below, but no more until below 85 KIAS.Top of airspeed white arc going faster could cause structure damage.
The elevator system on a 172 can handle pitch during full flap extension at any speed from the top of the white arc down to flaps-down stall speed. Above the top of the white arc, full flap extension risks structural failure of one or both flaps, and then there's no guarantee of what the flight controls will be able to do. But the determination of Vfe (maximum flap extension/extended speed, i.e., top of the white arc) is strictly an issue of flap structural strength, not control authority.As you lower flaps a C-172 pitches down at what speed will the elevator not have enough up to pull out with full flaps down.
You thought right.I thought it didn't have to do with running out of elevator but rather stress on the control surface.
..top of the white arc) is strictly an issue of flap structural strength, not control authority.
It will not be a problem at any speed as long as no structural failure occurs. If one or both of the flaps fail, you're on your own, and there's no telling whether that might occur 1 knot or 50 knots above the top of the white arc.The original question was at above the white arc with full flaps at what speed will control authority be a problem not the structural strength.