Gulfstream G650ER Aileron Autopilot System PDF

GULFSTREAM G650ER SYSTEM DESCRIPTION MANUAL AILERON AUTOPILOT SYSTEM — SYSTEM DESCRIPTION 1. General A. Description The Autopilot (AP) system has two servo actuators and motors. The actuators are attached to the pilot and copilot aileron and elevator control modules. A motor is attached to each pilo...

GULFSTREAM G650ER SYSTEM DESCRIPTION MANUAL AILERON AUTOPILOT SYSTEM — SYSTEM DESCRIPTION 1. General A. Description The Autopilot (AP) system has two servo actuators and motors. The actuators are attached to the pilot and copilot aileron and elevator control modules. A motor is attached to each pilot and copilot column / wheel assembly. A mechanical interconnect allows either motor to move both controls. This arrangement allows continuous operation if one side becomes jammed. See Figure 1 and Figure 2. 2. Component Location COMPONENT ATA QTY PER A/C LOCATION Aileron autopilot servo 27-16-01 2 Right side of aileron and elevator control module 3. Component Details A. Aileron Autopilot Servo The AP interface to the Flight Control System (FCS) is through servo actuators that connect to cockpit controls. The AP inputs are supplied through an electric servo motor that connects to the flight control mechanical input sector. The AP servo motor is mounted in each control module and move the columns and wheels. Either pilot may override the AP system with sufficient wheel force to override the servo and disconnect the AP. The pilot servo motor is controlled by Automatic FCS (AFCS) No. 1 located in Modular Avionics Unit (MAU) No. 1. The copilot servo motor is controlled by AFCS No. 2 in MAU No. 2. The servo motors directly move the control wheels. There is no direct signal from the AFCS system to the Flight Control Computer (FCCs) for aircraft control. The servo motors control aircraft movement by moving the controls in the same manner as the pilot / copilot in manual control. This method provides visual feedback to the pilot and copilot, indicating what the AFCS system is doing to control the aircraft. 4. Controls and Indications A. Circuit Breakers The system is protected by the following circuit breakers: NOMENCLATURE PANEL LOCATION POWER SOURCE AP ROLL SERVO 1 Pilot D3 L ESS 28VDC AP ROLL SERVO 2 Copilot D3 R ESS 28VDC B. Solid State Power Controllers The system is protected by the following solid state power controller: NOMENCLATURE IDENTIFICATION NUMBER POWER SOURCE ROLL TRIM 2702 R ESS 28VDC 27-16-00 Page 1 August 15/14 GULFSTREAM G650ER SYSTEM DESCRIPTION MANUAL C. CAS Messages The CAS messages for the system are shown in the following table: MESSAGE COLOR MESSAGE DESCRIPTION FCS Maintenance Required Blue Flight control system maintenance is required. Notify maintenance for corrective action. Roll Control Miscompare Amber Pilot and copilot control wheel positions are different. Continue flight within flight envelope limitations. Aircraft roll response with respect to control wheel input may be reduced. Pilot L-R Brake Pedal Fail Amber Pilot left and right brake pedals failed. Copilot L-R Brake Pedal Fail Amber L-R Inboard Brake Fail Amber Left and right inboard brakes failed. L-R Outboard Brake Fail Amber Left and right outboard brakes failed. Uncommanded Brake Amber Brakes are not commanded. Brake By Wire Fail Amber Brake-by-wire has failed. Retrim Left Wing Down Amber Retrim left wing down. Retrim Right Wing Down Amber Retrim right wing down. L-R Aileron Fail Amber Both remote electronics units failed or loss of aileron command to both ailerons. Continue flight within flight envelope limitations. Attempt FLT CTRL RESET. Roll Authority Limit Amber Roll axis flight control surfaces approaching maximum displacement. Adjust flight condition as necessary. Lateral Coupling Data Invalid Amber Copilot left and right brake pedals failed. Lateral coupling data a invalid. Speed Brake Auto Retract Amber Speed brakes (flight spoilers) automatically retracted with speed brake handle not in RETRACTED position and TLA =90% or angle of attack limiting encountered. Place speed brake handle at RETRACTED position. If unable, speed brakes will be unavailable while message is displayed. Speed Brake Fail Amber Speed brake control failed. Notify maintenance for corrective action. FCS Test Fail Amber Flight control system built-in test failed. Notify maintenance for corrective action. Ground Spoiler Red Failure of ground spoiler component or deployed ground spoiler panel. Select ground spoiler switch OFF and perform appropriate procedures. NOTE: The FCC status data required by the flightcrew is shown on the main displays as CAS messages and synoptic page data. 27-16-00 Page 2 August 15/14 GULFSTREAM G650ER SYSTEM DESCRIPTION MANUAL 5. Operation A. Aileron Autopilot System The pilot and copilot activate the AP system by selecting the AP switch on the flight guidance panel. When activated, the AP function directly controls the pilot and copilot control wheel and column. Servo motors drive the wheel and column to the desired position for autoflight. 27-16-00 Page 3 August 15/14