Originally written by HN39 in
Post #481:-
The FAR Part 25 regulations specify an ultimate load corresponding to 24*1.5=36 g. The rudder and supporting hinge brackets must be able to support an inertia ultimate load acting parallel to the hinge line of 24*1.5=36 times the weight of the rudder. Since Arm 36g is at an angle of 38 degrees to the rudder hinge line, 120 000 N in the direction of that arm corresponds to 94 561 N along the rudder hingeline, and hence to a rudder mass of 268 kg.
As described above, the true relationship between "Arm 36g" and the rudder hingeline is revealed, and my translation was deservedly "trashed".
mm43