CS,
If your purpose in asking this question is related to the ATPL exams, you need to be a little bit careful with this subject.
The POF exam often has questions along the lines of "Which aircraft will have the greatest rolling or yawing tendency following an engine failure?
a. Twin jet.
b. Twin prop.
c. Twin contra-rotating prop.
d. Twin counter rotating prop.
The props will have greater rolling and yawing tendencies than the jet, because of the asymetiric propwash over the wings. Flaps increase CL and CD at any given angle of attack, so they will also increase the asymmetric lift and drag following single engine failure.
But if you look at the CAP 698 figures 4.8 and 4.9, you will see that VMCG for the MRJT 1 does not change. The small table for 5 degree flap is identical to that for 15 degree flap. If flap setting does not alter VMCG, then it (probably) won't alter VMCA. So if you are asked how does flap setting affect any of the control speeds, it is probably safest to assume they are referring to jets and pick the "no effect" option. It would also be wise to make a written comment to the effect that increasing flap will increase control speed for props but the CAP shows no change for jets.
I realise that the real world might well be very different.
Last edited by Keith.Williams.; 20th Apr 2002 at 15:09.