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Old 09-07-2007, 07:25 AM
  #5  
Cubdriver
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Joined APC: May 2006
Position: ATP, CFI etc.
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Sounds good to me. I have yet to take the CFI checkride because of working too much, but I am optimisitic that things are going to change when I go to another job location next month.

Don't tell the examiner this unless he asks... but for discussion, the principle that allows forward slips to quickly lose altitude can be found in the nature of the induced drag curve. Induced drag goes up exponentially as speed is reduced and angle of attack is increased. You can determine what speed this occurs at, by trying speeds at or below 70 kts in a typical trainer. A wing at high AOA has exponentially increasing drag and wants to trade altitude for airspeed. If you look at the drag curves for a given wing, parasite drag goes exponentially up with speed, but on the low end induced drag goes exponentially up with a drop in speed.

Last edited by Cubdriver; 09-07-2007 at 02:03 PM.
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