Podcast Beta
Questions and Answers
What happens to the control surface when the pilot pulls back on the stick to begin a climb?
What is the purpose of the actuator unit in the power-operated control system?
What is the connection between the pilot's stick and the control surface in the power-operated control system?
Why is artificial feel introduced in the power-operated control system?
Signup and view all the answers
What is the effect of the power-assisted actuator on the pilot's control of the aircraft?
Signup and view all the answers
Where is the actuator unit connected in the power-operated control system?
Signup and view all the answers
What is the primary function of the control surface position cam?
Signup and view all the answers
What was the original purpose of an autopilot system?
Signup and view all the answers
What type of autopilot is commonly found on light aircraft?
Signup and view all the answers
What is the term for an autopilot system that controls attitude about the pitch and roll axis?
Signup and view all the answers
What is the term for an autopilot system that controls attitude about the pitch, roll, and yaw axis?
Signup and view all the answers
What is the term for the system that integrates the autopilot and other automatic flight control functions?
Signup and view all the answers
What is the minimum number of independent autopilot systems required for an Autoland capable aircraft?
Signup and view all the answers
What is the primary function of the flight control computer in each autopilot system?
Signup and view all the answers
What is the purpose of the automatic trim control unit in an autopilot system?
Signup and view all the answers
What is the term for a dual autopilot installation that provides a warning and allows the aircraft to default to a stable condition should a single input failure occur?
Signup and view all the answers
What is the consequence of a single autopilot disengagement in an Autoland capable aircraft with a fail passive installation?
Signup and view all the answers
What is the typical mounting arrangement for the computer units of an autopilot system?
Signup and view all the answers
What must be closed for the pilot to engage the autopilot?
Signup and view all the answers
What happens when the engage switch is moved to autopilot?
Signup and view all the answers
What is the purpose of the engage switch hold-in coil?
Signup and view all the answers
What will cause the autopilot to disengage?
Signup and view all the answers
What is the function of the power monitoring relays?
Signup and view all the answers
What is the initial state of the autopilot when engaged?
Signup and view all the answers
What is the primary function of the Flight Management Computer (FMC)?
Signup and view all the answers
Which system uses the FMC's outputs for automatic guidance for engine power settings?
Signup and view all the answers
What is the purpose of the autopilot and autothrottle systems when engaged?
Signup and view all the answers
Which of the following systems does the FMC NOT interface with?
Signup and view all the answers
What is the role of the central maintenance computer in relation to the FMC?
Signup and view all the answers
What is displayed on pages 237 and 238 of the training materials?
Signup and view all the answers
Study Notes
Autopilot Interlock Schematic
- For autopilot engagement, captain and co-pilot disengage button switches must be closed, power monitoring relays must be closed, and mach trim coupler relays, auto-trim cut-out switch, and vertical gyro contacts must be closed.
- The turn control switch must be in detent, and the mode selector switch must be in MAN to ensure the autopilot maintains the aircraft's attitude.
Autopilot System
- The engage switch energizes the engage interlock relay, providing power to the three servo clutches, the engage switch hold-in coil, and the engage relay.
- Any loss of power, operation of a disengage switch, or loss of serviceability of Mach trim, auto-trim, or gyro will de-energize the engage switch hold-in coil, causing the engage switch to return to off and all servo clutches to de-energize.
Flight Management Computer (FMC)
- The FMC interfaces with various aircraft systems, including fuel quantity and fuel flow systems, radio navigational systems, inertial reference systems, air data systems, thrust management computer, flight control computers, EICAS/ECAM and EFIS systems, air/ground data link systems, and the central maintenance computer.
- The FMC provides outputs for automatic guidance for engine power settings with the autopilot and autothrottle systems engaged.
Autopilot and Autothrottle Systems
- With the autopilot and autothrottle systems engaged, the aircraft will follow the flight plan as entered by the crew prior to the flight commencing.
- Multiple autopilot engagement is possible for approach and landing, with autothrottle operation.
Computer Flight Control
- An aircraft may be fitted with one, two, or three independent autopilot systems, depending on the operator's requirements.
- Each autopilot system has a dedicated flight control computer receiving dedicated inputs and providing its own outputs.
Autoland and Multiple Autopilots
- An aircraft capable of Autoland requires a minimum of two totally independent autopilots.
- Fail Passive is a dual autopilot installation that provides a warning and allows the aircraft to default to a stable condition should a single input failure occur.
Power-Operated Control
- In a power-operated control system, the pilot's stick is connected to the control lever only, while the actuator unit is directly connected to the control surface.
- The effort required by the pilot to move the pilot's stick is that needed to move the control lever and control valve piston.
- The power required to move the control surface is supplied solely by the actuator unit's hydraulic power.
Artificial Feel
- In a power-operated control system, a means of artificial feel must be introduced at a point between the pilot's stick and the connection to the actuator unit control lever.
- The elevator artificial feel computer increases the spring pressure on the yellow valve and increases the regulated pressure to increase the force opposing the control column when the horizontal stabilizer is near its outer limits of movement.
Autopilot Introduction
- The original use of an autopilot was to provide pilot relief during tedious stages of flight, such as high-altitude cruising.
- Advanced autopilots are now part of the Automatic Flight Control System (AFCS) and can carry out highly precise maneuvers, such as landing an aircraft (Autoland) or operating throttles (Autothrottle).
- Autopilots can be classified as single axis, multi-axis, or by the number of axes about which control is implemented.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
This quiz covers the conditions required to engage the autopilot in a turbine aeroplane, including the necessary switches and relays that must be closed. It is a part of the CASA Part 66 training materials and focuses on aeroplane systems and structures. Test your knowledge of autopilot systems and their safety features.