Where:

..\Images\IMG00102_shg.gif

is the factor for hingemoment due to downspring preload

..\Images\IMG00103_shg.gif

is the factor for hingemoment from downspring due to control surface deflection

..\Images\IMG00104_shg.gif

is the control surface deflection angle

..\Images\IMG00105_shg.gif

is the factor for downspring hingemoment due to squared control surface deflection

..\Images\IMG00106_shg.gif

is the factor for downspring hin gemoment due to the lifting surface incidence

..\Images\IMG00107_shg.gif

is the lifting surface incidence angle