I understand your point. Yes, at the aerodynamic center of the stab the forces are ideally zero. However, the realities of daily life are also present.
While level flight is somewhat static, much of the time the plane is in a much more dynamic mode. Whether due to a wind gust or inputs from the pilot, the tail is often trying to change the AOA of the wing. Additionally the tail is nearly always countering the pitching moment of the wing which varies with flight condition. All the above results in average loads and peak loads on the tail, and thus the servo, which can be significant. This along with the devastating effects of elevator failure leads pilots to be excessively concerned about their choice of elevator servo. Bill Swingle [EMAIL PROTECTED] Janesville, CA RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
