If you want to test something in a repeatable way you need to define the test conditions to control the variables that aren't of interest.
Flaps will generally affect the asymmetric rolling moment and also cause an increase in drag which will lead to an increase in asymmetric yawing moment.
Why do you say that flaps reduce Vmc?
HFD
(edited to correct a typo)
Last edited by hugh flung_dung; 1st February 2007 at 17:30.