Originally Posted by
bubbers44
Thanks Mutt, Missed the gradient part. I just did a typical max wt. climb limited example where the 2.4 climb gradient is reduced .6 % and the roc decreases from 360 fpm to 270 fpm or 25%. At TGU in Honduras we took an enormous prohibitive penalty for taking off to the south because of terrain and an immediate 180 required after take off. We routinely took off on a 6000 ft strip with a 10 knot tail wind because of that in a 757. I believe the required bank angle was 25 degrees too.
Isnt the answer Cos(15 degrees)?
After all, all you are doing is angling the lift vector round to give you force in the direction of the turn?
Dont see how this could vary from a/C to A/C apart from changes in induced drag (surely the same as you are climbing/turning at same speed, just reducing your lift vector by Cos(15 degrees)?
