航空专业英语Unit 11
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• 1.5 Maintenance Monitor Systems
• Provide the centralized flight and ground faults readout and ground test capability.
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2 Autoflight and Flight Controls Interface（See Fig.11.2）
• Provide pitch and roll flight director commands, system warnings and annunciations.
• 1.4 Auto Stab Trim Systems
• Control stabilizer position as a function of autopilot commands, and mach.
Unit 11 Autoflight General
• 1 Autoflight General • 2 Autoflight and Flight Controls Interface • 3 Autopilot Flight Director Systems • 4 Maintenance Monitor Systems
• Provide automatic control to the aileron, elevator, stabilizer and rudder control system to fly the selected flight mode.
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1 Autoflight General
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1 Autoflight General（See Fig.11.1）
• 1.1 Thrust Management Systems
• Provide Engine Thrust control in response to the selected mode, current condition and engine limit.
• The autoland status annunciators identify the system capability and limitation status for AUTOLAND operations.
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3 Autopilot Flight Director Systems
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3 Autopilot Flight Director Systems （See Fig.11.3）
• 3.1 General
• The AFDS integrates the functions of the autopilot, flight director, and automatic stabilizer trim. The system consists of a Mode Control Panel (MCP), three independent Flight Control
• are available. Automatic control to an FMCS flight plan is selected in the LNAV and VNAV modes. Autoland, with rollout, is available for FAA certified category IIIB landings.
• 3.3 Maintenance
• The maintenance control and display panel（MCDP）receives data on flight faults at touchdown. These data can be displayed during troubleshooting. The MCDP also permits the onairplane
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2 Autoflight and Flight Controls Interface
• 2.3 Rudder Control Channels
• Each FCC provides a rudder servo command to a dedicated autopilot directional servo, whose output is summed with the yaw damper system command and applied to the rudder power control actuators.
• isolation or system verification. The MCDP can be operated from the main equipment center using the select switches and readout on the front panel. It can also be operated remotely through a connector in the flight deck with all the messages shown on the EICAS displays.
• Computers (FCCs), and autopilot servo actuators.
• 3.2 Operation
• The Mode Control Panel located on the glare shield provides access for all automatic flight control selections and modes. Flight director commands and autopilot modes of operation are
• a maximum of 99 flights.
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4 Maintenance Monitor Systems
• The MCDP can be powered up manually for ground maintenance. The stored flight faults can then be examined or the ground test function can be used for further problem
• 2.4 Stabilizer Control
• Each FCC supplies auto stabilizer trim commands to the stabilizer trim and aileron lockout modules（SAM）. Each SAM integrates manual electric trim, mach trim and auto stab trim
• displayed on the EADIs.
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3 Autopilot Flight Director Systems
• In conjunction with other systems, the autopilot provides automatic flight capabilities for all the phases of the flight except takeoff. In takeoff mode, flight director commands
• 2.1 Aileron Control Channels
• Each flight control computer（FCC）controls a dedicated lateral central control actuator,providing an aileron servo command and receiving servo and surface position feedback.
• commands.
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2 Autoflight and Flight Controls Interface
• 2.5 Thrust Control
• The thrust management computer（TMC）controls the auto throttle servo which moves the throttles to achieve the computed throttle position for the mode selected.
• 4.3 Operation
• The MCDP is normally off. It turns on automatically after touchdown and all the connected computers transmit messages detailing any failures which occurred during the flight. The MCDP can store five faults from each of the six computers for the last flight and 10 flights with faults for
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Fig.11.1 Autoflight general
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Fig.11.2 Autoflight & flight controls interface
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Fig.11.3 Autopilot Flight Director systems
• 1.2 Yaw Damper Systems
• Control rudders to minimize yaw oscillators due to Dutch Roll or gust-induced sideslips. Also provide turn coordination.
• 1.3 Autopilot Flight Director Systems
• testing of autopilot components and system performance.
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4 Maintenance Monitor Systems （See Байду номын сангаасig.11.4）
• 4.1 Purpose
• The maintenance monitor system combines flight fault storage and ground test functions for the autopilot flight director system and the thrust management system. The maintenance monitor system also provides flight fault storage for the flight management computer system.
• 4.2 Installation
• One maintenance control and display panel（MCDP）is installed.
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4 Maintenance Monitor Systems
• It is directly connected to the flight control computers, thrust management computer and flight management computers. Through these computers much of the airplane avionics can be tested.
• 2.2 Elevator Control Channels
• Each FCC controls a dedicated autopilot elevator servo, providing an elevator servo command and receiving position feedback signals.
• Provide the centralized flight and ground faults readout and ground test capability.
上一页
返回
2 Autoflight and Flight Controls Interface（See Fig.11.2）
• Provide pitch and roll flight director commands, system warnings and annunciations.
• 1.4 Auto Stab Trim Systems
• Control stabilizer position as a function of autopilot commands, and mach.
Unit 11 Autoflight General
• 1 Autoflight General • 2 Autoflight and Flight Controls Interface • 3 Autopilot Flight Director Systems • 4 Maintenance Monitor Systems
• Provide automatic control to the aileron, elevator, stabilizer and rudder control system to fly the selected flight mode.
下一页 返回
1 Autoflight General
返回
1 Autoflight General（See Fig.11.1）
• 1.1 Thrust Management Systems
• Provide Engine Thrust control in response to the selected mode, current condition and engine limit.
• The autoland status annunciators identify the system capability and limitation status for AUTOLAND operations.
上一页 下一页 返回
3 Autopilot Flight Director Systems
上一页
返回
3 Autopilot Flight Director Systems （See Fig.11.3）
• 3.1 General
• The AFDS integrates the functions of the autopilot, flight director, and automatic stabilizer trim. The system consists of a Mode Control Panel (MCP), three independent Flight Control
• are available. Automatic control to an FMCS flight plan is selected in the LNAV and VNAV modes. Autoland, with rollout, is available for FAA certified category IIIB landings.
• 3.3 Maintenance
• The maintenance control and display panel（MCDP）receives data on flight faults at touchdown. These data can be displayed during troubleshooting. The MCDP also permits the onairplane
下一页 返回
2 Autoflight and Flight Controls Interface
• 2.3 Rudder Control Channels
• Each FCC provides a rudder servo command to a dedicated autopilot directional servo, whose output is summed with the yaw damper system command and applied to the rudder power control actuators.
• isolation or system verification. The MCDP can be operated from the main equipment center using the select switches and readout on the front panel. It can also be operated remotely through a connector in the flight deck with all the messages shown on the EICAS displays.
• Computers (FCCs), and autopilot servo actuators.
• 3.2 Operation
• The Mode Control Panel located on the glare shield provides access for all automatic flight control selections and modes. Flight director commands and autopilot modes of operation are
• a maximum of 99 flights.
上一页 下一页 返回
4 Maintenance Monitor Systems
• The MCDP can be powered up manually for ground maintenance. The stored flight faults can then be examined or the ground test function can be used for further problem
• 2.4 Stabilizer Control
• Each FCC supplies auto stabilizer trim commands to the stabilizer trim and aileron lockout modules（SAM）. Each SAM integrates manual electric trim, mach trim and auto stab trim
• displayed on the EADIs.
下一页 返回
3 Autopilot Flight Director Systems
• In conjunction with other systems, the autopilot provides automatic flight capabilities for all the phases of the flight except takeoff. In takeoff mode, flight director commands
• 2.1 Aileron Control Channels
• Each flight control computer（FCC）controls a dedicated lateral central control actuator,providing an aileron servo command and receiving servo and surface position feedback.
• commands.
上一页 下一页 返回
2 Autoflight and Flight Controls Interface
• 2.5 Thrust Control
• The thrust management computer（TMC）controls the auto throttle servo which moves the throttles to achieve the computed throttle position for the mode selected.
• 4.3 Operation
• The MCDP is normally off. It turns on automatically after touchdown and all the connected computers transmit messages detailing any failures which occurred during the flight. The MCDP can store five faults from each of the six computers for the last flight and 10 flights with faults for
上一页
返回
Fig.11.1 Autoflight general
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Fig.11.2 Autoflight & flight controls interface
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Fig.11.3 Autopilot Flight Director systems
• 1.2 Yaw Damper Systems
• Control rudders to minimize yaw oscillators due to Dutch Roll or gust-induced sideslips. Also provide turn coordination.
• 1.3 Autopilot Flight Director Systems
• testing of autopilot components and system performance.
上一页
返回
4 Maintenance Monitor Systems （See Байду номын сангаасig.11.4）
• 4.1 Purpose
• The maintenance monitor system combines flight fault storage and ground test functions for the autopilot flight director system and the thrust management system. The maintenance monitor system also provides flight fault storage for the flight management computer system.
• 4.2 Installation
• One maintenance control and display panel（MCDP）is installed.
下一页 返回
4 Maintenance Monitor Systems
• It is directly connected to the flight control computers, thrust management computer and flight management computers. Through these computers much of the airplane avionics can be tested.
• 2.2 Elevator Control Channels
• Each FCC controls a dedicated autopilot elevator servo, providing an elevator servo command and receiving position feedback signals.