Aircraft Flight Controls Syllabus Diploma in Aircraft Maintenance Engineering, Regulation 2010:
- To know the purpose of primary, secondary and auxiliary group of flight control surfaces.
- To provide guide line about pitch control, roll control and yaw control of aircraft.
- To give idea about the life augmenting and lift dumping devices.
- To make familiar with the different type of tab, their principle and operation.
- To provide with general knowledge about the un-usual control (dual control) their arrangements and operation.
- To understand the mechanical, powered and power assisted flight controls.
- To familiar with servo-control mechanism, follow-up and feedback systems.
- To understand the control system (essential) requirements.
- To familiarize with artificial feel mechanism and gust lock system.
- To provide detail view about the installation criteria with safety features of flight controls.
SHORT DESCRIPTION
To provide clear understanding about primary, secondary and auxiliary group of flight controls, pitch, roll and yaw control, unusual controls and their operation, mechanically, powered and power assisted controls, essential requirements, installation, rigging and safety procedure.
DETAIL DESCRIPTION
Theory
- To familiar with the introduction of Flight Control System
- Understand the Purpose of Flight Control System
- Describe the requirements of Aircraft Flight Control System
3.1 Define sensitivity
3.2 Define stability
3.3 Discuss emergency measures
3.4 Describe irreversibility
3.5 Discuss thermal relief
- Understand Aircraft Flight Control Surfaces
4.1 List primary group control surface
4.2 List secondary group control surface
4.3 List auxiliary group control surface
- Understand the Aileron Controls
5.1 Describe principle of aileron operation
5.2 Define roll control
5.3 Describe adverse yaw and its preventive measure
5.3.1 Explain aileron deflection
5.3.2 Identify fries-type aileron
- Explain aileron lock out mechanism
- Understand the Elevator Controls
6.1 Describe principle of elevators operation.
6.2 Define pitch control
6.3 Identify all-moving tail plane
6.4 Describe trim-able horizontal stabilizer (THS)
6.5 Define Mach Trim
- Understand the Rudder Controls
7.1 Describe principle of rudder operation
7.2 define yaw control (directional control)
7.3 Explain yaw damper
- Understand the Control Surface Balance
8.1 Introduction
8.2 Count methods used
8.2.1 Determine static balance
8.2.2 Define dynamic balance
9 Describe the operation of the following Tabs (Secondary Flight Control)
9.1 Ground adjustable tab
9.2 Trim tab
9.3 Balance tab
9.4 Servo tab
9.5 Spring tab
9.6 Anti-balance tab
- Understand the following Auxiliary Flight Controls
10.1 Lift augmenting devices
10.1.1 Wing trailing edge flaps:
10.1.1.1 Plain flap
10.1.1.2 Split flap
10.1.1.3 Fowler flap
10.1.1.4 Slotted flap
10.1.2 Wing leading edge flaps
10.1.2.1 Kruger flap
10.1.2.2 Droop flap
10.1.3 Slats
10.1.3.1 Fixed slat
10.1.3.2 Automatic slat
10.1.3.3 Controllable slat
10.2 Spoilers
10.2.1 Flight spoiler (Lift dumper)
10.2.2 Roll spoiler (Lateral control)
10.2.3 Ground spoiler
10.2.4 Speed break / air brake
10.2.5 Position indicators
10.3 Synchronization (Lift augmenting & dumping devices)
- Identify the following Un-usual Control (Duel Control)
11.1 Ruddovators
11.2 Elevons
11.3 Stabilators
11.4 Flaperons
- Understand the Flight Controls Operating Mode
12.1 Mechanically operated flight controls
12.2 Power operated flight controls
12.3 Power assisted flight controls
12.4 Electrical Motor Operated flight controls
- Understand the Mechanically Operated Flight Controls
13.1 Push-Pull rod and Bellcrank system operation
13.2 Cable and pulley system operation
13.3 Chain and Sprocket system operation
13.4 Cable tension regulator
13.5 Cable tension measurement
13.6 control rigging procedure
- Understand the Powered flight controls
14.1 Servo- mechanism
14.2 Follow up system
14.3 Feed back system
14.4 Artificial feel mechanism
14.4.1 Spring feel system
14.4.2 Bungee feel system
14.4.3 Q. feel system
14.5 Failure mode of operation
- Understand the Power assisted (Boosted) flight control
15.1 Servo mechanism
15.2 Summing bar
15.3 Idler bar
15.4 Backlash actuator
15.5 Failure mode of operation
- Discuss the following Gust Lock
16.1 External locks
16.2 Internal locks
16.3 Control surface snobbier
- Understand the installation of Flight Control Surfaces
17.1 Determine control surface deflection limit stops
17.2 Outline pulleys and sprockets
17.3 Differentiate guards and cover
17.4 Differentiate levers and fairleads
17.5 Explain fork-end fittings
17.6 Differentiate control cable and push-pull rods
Practical
- Show skill in identification of primary control surfaces and associated components
- Show skill in identification of secondary control surfaces and associated components
- Show skill in primary control surfaces operation
- Show skill in secondary control surfaces operation
- Show skill in removal and installation of Control Surfaces
- Show skill in control adjustment & rigging
REFERENCE BOOKS
- A&P Hand Book AC65-15A
- Cessna 150 Aircraft
- F-28 Aircraft
- DC10-30 Aircraft
- A310 Airbus Aircraft
Prepared by
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Anwar Hossain Khan Deputy Chief Instructor
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GM Anwer Hossain Chief Instructor |
Engr. S.M. Akmal Hossain Principal |
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