Thread: Wing Dihedral..
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Old 12-05-2009 | 07:58 PM
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multipilot
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Originally Posted by shdw
I agree with KC: Except the reason for the sideslip. Too complicated. Research adverse yaw, that causes the sideslip. Then read KC's second paragraph. That should complete your picture of the scenario, IMO.

Multipilot: Unless I am reading this wrong, "the result is a sideslip toward the lower wing" is a skid. You are referring to the nose being inward and the tail outward? The opposite of what is actually happening in an aircraft, though it is what happens in a boat. I don't know that I would use the boat scenario for this explanation. A boat skids when a turn is entered, then banks. Similar to proverse roll in an aircraft, stomp on the rudder, outside wing moves faster thus more lift, and rolls in the direction of the yaw.
Poor choice of wording in that particular sentence on my part I suppose. Tail inside the bank and the nose outside. Should have ended it at sideslip and left out the part about "toward the lower wing". My brain was ahead of my fingers as I was already thinking about where the relative wind was coming from as I was typing that.

Clarification of my boat analogy: The boat is not turning, just slapped on the side by a wave. The boat's initial reaction would be to return to it's original upright position.
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