Aircraft Propellers Syllabus Diploma in Aircraft Maintenance Engineering, Regulation 2010
OBJECTIVES
- To provide understanding of propellers.
- To familiarize different types of propellers.
- To give an ideas and knowledge about propeller installation.
- To give an ideas and knowledge about governor of propellers.
- To give an ideas and knowledge about propeller operations.
- To give an ideas and knowledge about propellers checking and balance.
- To give the ideas and knowledge about propellers inspections and maintenance.
SHORT DESCRIPTION
Introduction to propeller principles, aerodynamic forces, types, constructions, operations, various auxiliary systems, installation procedure, inspection and maintenance.
DETAIL DESCRIPTION
Theory
- INTRODUCTION
- Define Propeller Terminology
- Describe the following Propeller blade construction
1.2.1 Wood propeller blade
1.2.2 Aluminum alloy propeller blade
1.2.3 Fiber glass propeller blade
- UNDERSTAND BASIC PROPELLER PRINCIPLES
2.1 Recall Propeller Theory
2.2 Define Propeller Lift & Angle of Attack
- DEFINE THE FOLLOWING PROPELLER AERODYNAMIC FORCES
3.1 Centrifugal force
3.2 Thrust bending force
3.3 Torque bending force
3.4 Centrifugal twisting moment
3.5 Aerodynamic twisting moment
3.6 Vibrational force & Critical range
3.7 Propeller Controls and Instruments
- UNDERSTAND PROPELLER LOCATION & INSTALLATION
4.1 Identify Tractor Propeller
4.2 Identify Pusher Propellers
- DESCRIBE THE FOLLOWING TYPES OF PROPELLERS
5.1 Fixed-Pitch Propeller
5.2 Two position Propeller
5.3 Ground-Adjustable Propeller
5.4 Controllable-Pitch Propeller
5.5 Constant-Speed Propellers
5.6 Feathering Propellers
5.7 Reverse-Pitch Propellers
- UNDERSTAND PROPELLER GOVERNOR
6.1 Describe Governor Mechanism
6.2 Translate Under-speed Condition
6.3 Translate Over-speed Condition
6.4 Translate On-Speed Condition
6.5 Describe Governor System Operations
- UNDERSTAND PROPELLER INSTALLATIONS
7.1 Describe Flanged shaft installation
7.2 Tapered shaft installation
7.2.1 Carry out Pre installation checks
7.2.2 Carry out Trial installation
7.2.3 Carry out Installation procedure
7.3 Determine the Safety the propeller
- UNDERSTAND PROPELLERS USED ON GENERAL AVIATION AIRCRAFT
8.1 Describe Fixed-Pitch Wooden Propellers
8.2 Describe Metal Fixed-Pitch Propellers
- UNDERSTAND CONSTANT-SPEED PROPELLERS
9.1 Describe Hartzell Constant-Speed, Non-feathering
9.2 Describe Constant-Speed Feathering Propeller
9.3 Carry out Unfeathering operation of propeller
- DESCRIBE THE FOLLOWING PROPELLER AUXILIARY SYSTEMS
10.1 Ice Control Systems
10.2 Anti-Icing Systems
10.3 Deicing Systems
10.4 Propeller Synchronization and Synchrophasing
10.5 Auto feathering System
10.6 Reduction gear system
- DIFFERENTIATE THE FOLLWING BREAKING BY PROPELLERS
11.1 Wind milling breaks
11.2 Power on breaks
- INSPECTION and MAINTENANCE
12.1 Do a Wood Propeller Inspection
12.2 Do a Metal Propeller Inspection
12.3 Do a Aluminum Propeller Inspection
12.4 do a Composite Propeller Inspection
- UNDERSTAND PROPELLER VIBRATION
13.1 Carry out Blade Tracking
13.2 Carry out Checking and Adjusting Propeller Blade Angles
13.3 Describe Universal Propeller Protractor
- UNDERSTAND PROPELLER BALANCING
14.1 Carry out Static Balancing
14.2 Carry out Dynamic Balancing
14.3 Carry out Balancing Procedure
- UNDERSTAND PROPELLER REMOVAL AND INSTALLATION
15.1 Carry out Removal procedure of Propeller
15.2 Carry out Installation procedure of Propeller
- UNDERSTAND SERVICING PROPELLERS
16.1 Carry out Cleaning Propeller Blades
16.2 Carry out Charging the Propeller Air Dome
16.3 Carry out Propeller Lubrication
- UNDERSTAND TROUBLE SHOOTING PROPELLERS
18.1 Hunting and Surging
18.2 Engine Speed Varies With Flight Attitude (Airspeed)
18.3 Failure to Feather or Feathers Slowly
18 TURBOPROP ENGINES AND PROPELLER CONTROL SYSTEMS
19.1 Reduction Gear Assembly
19.2 Turbo-Propeller Assembly
- DESCRIBE PRATT AND WHITNEY PT6 HARTZELL PROPELLER SYSTEM
- UNDERSTAND HAMILTON STANDARD HYDROMATIC PROPELLERS
21.1 Define Principles of Operation
21.2 Describe Feathering Operation
21.3 Describe Un-feathering Operation
21.4 Outline the Setting of the Propeller Governor.
Practical
- Identify different types of propeller installation
- Find out cone bottoming
- Disassemble, cleaning, inspect & assemble the propeller
- Disassemble, cleaning, inspect & assemble the propeller governor
- Carry out propeller balancing
- Carry out propeller tracking
REFERENCE BOOKS
- Maintenance Technician Handbook Power Plant, Volume-I: by FAA Publication
- ITP-P Propellers: AMP Inc.
- Aircraft Propellers: by Frank Delp
- A & P Technical Power Plant Text Book: by Jeppesen
