SAS Release Switch The cyclic grip mounted switch is used to disengage the pitch, roll, and yaw channels simultaneously. The channels are re-engaged by the PITCH, ROLL, and YAW switches on the SCAS control panel. |
DESCRIPTION
Cyclic Control The pilot and gunner cyclic sticks have a built in operating friction. The cyclic control movements are not mixed, but are transmitted directly to the swashplate. The longitudinal cyclic control linkage is routed from the cyclic stick through the SCAS actuator, the dual boost hydraulic actuator to the right horn of the fixed swashplate ring. The lateral is similarly routed to the left horn. Control "feel" is provided by the force trim units. The fore and aft movement also changes the synchronized elevator attitude to assist controllability and lengthen c.g. range. Force Trim System The system incorporates a magnetic brake and force gradient in the cyclic and directional control systems to provide artificial feel into the systems. Also, it provides a means to trim the controls. Placing the FORCE TRIM switch in the FORCE TRIM position will induce artificial feel into the systems. Depressing the cyclic stick force trim switch will cause the magnetic brake and force gradient to be repositioned to correspond to the positions of the cyclic stick and pedals thus providing trim. The system is powered by the dc essential bus and protected by the FORCE TRIM circuit breaker. |
