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Old 10-17-2009, 05:32 PM
  #39  
ryan1234
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Joined APC: Jun 2008
Position: USAF
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Originally Posted by bubi352 View Post
Ryan1234, it's ok to be wrong
Just curious where you got your information from?

Here is a reference about lift in turns:
Banking Turn
It basically says that there is two components of lift; the vertical component of lift that opposes weight and the unopposed component. In a turn the wings generate lift, we know this as the horizontal component of lift or unopposed force. The vector of lift has a direction and magnitude thus making the airplane turn. This is very fundamental in aerodynamics. As the NASA website says, in a turn, the lift vector is tilted in the direction of the roll.

The mechanical forces of lift do not matter which direction they are in relation to the ground, it matters that there is some type of flow direction. For example, a rudder doesn't need to be opposed by gravity to work, yet it functions much like a wing like being subject to circular flow/vorticity (the things that are subject to ground effect).

Induced drag (from the ground effect) is ironic to this discussion because it is actually the lift vector tilting aft as a result of the tilting movement of local flow (local relative wind) from the vorticity. That aft part of the lift vector quantity is induced drag because it is starting to oppose thrust.
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