English to Portuguese Tech/Engineering Aerospace / Aviation / Space parts of the fuselage

A change to the airplane weight and balance will be dependent upon the total
Ruddervator(s) balance weight added or removed, per paragraph 3.1.(8). Use the
formula: ***WEIGHT CHANGE X H-ARM = H-MOMENT*** to determine the airplane
weight and balance change. Refer to the following table.

Hi,
I wonder if it should be translated simply as "momento horizontal"?

Thanks!