Originally Posted by
sycamore
Never been on a dc-9, but the graph only shows the `Empty weight`,no pax /crew freight.
The `Zero fuel weight ` shows the Maximum weight with crew/pax/freight ..a structural limit..
The GW` shows the maximum permissible taxi/take-off weight permissible,not limited by other factors such as `runway ,air temperature or airfield altitude.
The figures at the top show the `Trim setting` for the tailplane for take-off..Other factors may modify that ,depending on flap settings possibly.
It is necessary to know where the basic `Datums ` for the Cof G to work out the MAC,,but that is not on this chart...
I totally agree with you at every line. Indeed I've forgot that the flap/slat setting also asks for a new tab position, due to pitching moment coefficient variation from a clean wing. There is no C of G here, yes, so i was wondering if anyone might know how to extract it from this graph!
Thanks!