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Old 7th April 2004 | 11:16
  #7 (permalink)  
ROB-x38
 
Joined: Nov 2003
Posts: 126
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From: Australia
G'day palgia.

I think I remember that Vmc is lower in ground effect but to be honest don't know why.

I understand your different lift distibution ideas and therefore maybe different moments due to the induced drag. Along those lines....

A couple of assumptions:

- a left engine failure
- an imaginary centre of pressure for each wing (a point where the lift can be assumed to act through on the wing)
- the induced drag acts through the centre of pressure (can you do that!? )

I'd guess the centre of pressure would be more inboard on the right wing due to the propwash and lift over the nacelle -> the centre of pressure would be more outboard on the left wing. If you can assume the induced drag acts through the centre of pressure, climbing out of ground effect would increase the induced drag, and with the longer moment along the left wing the net result would be an increased overall moment swinging the nose to the left -> a higher Vmca.

Any thoughts palgia?

Like you pure speculation!
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