Why didn't you say so first time around ..... now the problem becomes relatively simple.
(a) figure the included angle between the outbound and inbound legs
(b) figure the distance out from the station at which you commence the turn
(c) it is a simple matter to figure the diameter of the circle which is tangential to the legs at that distance
(d) knowing the aircraft speed, it is a simple matter to figure the bank to achieve the diameter.
If you really want this stuff (it is of use in link trainer work especially) do send me an email and I will send you the relevant formulae and a graph or two to make it easier.
In practice, wind complicates things sufficiently to make an easier procedure -
(a) figure the bank as above and, if less than 25-30 degrees, use your preference of those bank angles
(b) turn to the mid-heading position and note the relative bearing
(c) use (b) to figure a lead bearing to commence the turn to final
(d) soft shoe shuffle the turn onto final but it will be pretty close.
If the calculated bank is greater than 30 degrees (not often, but sometimes the designers goof off and this happens) consider extending the outbound leg within maximum speed parameters to increase the distance and diameter .... and reduce the bank to achieve the diameter ... maybe even reduce speed by configuring a bit earlier than standard for your type before or during the turn to reduce the radius for a given bank ...
Last edited by john_tullamarine; 9th Jun 2003 at 15:06.