"Newps" wrote in message
. ..


Dan Nafe wrote:

In article ,
Bertie the Bunyip wrote:


An old rule-of-thumb I remember has it that aligning the flap with a
down aileron gives you the best (most lift) flap position (assuming, i
presume, that the ailerons deflect to maximum effectiveness=lift)

Never heard it but it sounds like a good bush piloty sort of thing to do.


My flight instructor, a former drug-smuggler, taught me that very
technique.


The most lift is always gained with the most flaps.

I try to shy away from the use of the word "always". There are some
aircraft that use flaps for their induced drag. An example is a glider with
large span 90 degree flaps. As an owner of such a craft I can testify that
increased lift is not associated with flap setting greater then 40 degrees.
Setting beyond 45 definitely exist only for the drag they create.
(http://tinyurl.com/2w6fuk)

Wayne
HP-14 "6F"
http://www.soaridaho.com/Schreder