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2024-2025 College Catalog

AVM 209 - Intermediate Electricity

3.5 Credits, 7 Contact Hours
1.75 lecture periods 5.25 lab periods
Intermediate electricity includes the study of aircraft airframe electrical components as well as airframe and powerplant electrical systems. Includes electric motors, generators and generator controls, alternators, inventers and related controls, power distribution systems, design and maintenance of aircraft electrical systems, digital electronics, analog electronics, communication and navigation systems, communications, weather warning systems, and electric instruments and autoflight systems.

Prerequisite(s): AVM 208  
Button linking to AZ Transfer course equivalency guide    button image Prior Learning and link to PLA webpage

Course Learning Outcomes
  1. Recall proficient knowledge of motors and generators
  2. Recall proficient knowledge of communication and navigation systems
  3. Demonstrate common processes/procedures associated with power distribution and instrumentation systems
Outline:
  1. Introduction
    1. Ohm’s Law
    2. Current
    3. Electromotive Force (Voltage)
    4. Resistance
    5. Electromagnetic Generation of Power
    6. Alternating Current (AC) Introduction
    7. Opposition to Current Flow of AC
  2. Aircraft Batteries
  3. DC Generators
    1. Theory of Operation
    2. Generation of a DC Voltage
    3. Construction Features of DC Generators
    4. Armature
    5. Commutators
    6. Armature Reaction
    7. Compensating Windings
    8. Interpoles
    9. Types of DC Generators
    10. Generator Ratings
    11. Generator Terminals
  4. DC Motor Maintenance
    1. Theory of Operation
    2. Generation of a DC Voltage
    3. DC Motors
    4. Force Between Parallel Conductors
    5. Developing Torque
    6. Basic DC Motor
  5. DC Motor Construction
    1. Armature Assembly
    2. Field Assembly
    3. Brush Assembly
    4. End Frame
  6. Types of DC Motors
    1. Series DC Motor
    2. Shunt DC Motor
    3. Compound DC Motor
  7. Counter Electromotive Force (emf)
    1. Types of Duty
    2. Reversing Motor Direction
    3. Compound DC Motor
    4. Motor Speed
  8. AC Motors
    1. Types of AC Motors
    2. Three-Phase Induction Motor
    3. Compound DC Motor
    4. Rotating Magnetic Field
    5. Construction of Induction Motor
    6. Induction Motor Slip
    7. Single-Phase Induction Motor
    8. Shaded Pole Induction Motor
    9. Split-Phase Motor
    10. Capacitor Start Motor
    11. Direction of Rotation of Induction Motors
    12. Synchronous Motor
    13. AC Series Motor
    14. Maintenance of AC Motors
  9. Alternators
    1. Basic Alternators and Classifications
    2. Method of Excitation
    3. Number of Phases
    4. Armature or Field Rotation
    5. Wye Connection (Three-Phase)
    6. Delta Connection (Three Phase)
    7. Alternator Rectifier Unit
    8. Brushless Alternator
    9. Alternator Frequency
    10. Starter Generator
    11. Alternator Rating
    12. Regulation of Generator Voltage
    13. Voltage Regulation with a Vibrating-Type Regulator
    14. Three Unit Regulators
    15. Differential Relay Switch
    16. Overvoltage and Field Control Relays
  10. Generator Control Units (GCU)
    1. Basic Functions of a Generator Control Unit (GCU)
    2. Voltage Regulation
    3. Overvoltage Protection
    4. Parallel Generator Operations
    5. Over-Excitation Protection
    6. Differential Voltage
    7. Reverse Current Sensing
  11. Alternator Constant Speed Drive System
  12. Hydraulic Transmission
  13. Voltage Regulation of Alternators 
  14. Aircraft Electrical Systems
    1. Small Single-Engine Aircraft
    2. Light Multi-Engine Aircraft
    3. Large Multi-Engine Aircraft 
  15. Wiring Installation
    1. Wiring Installation
    2. Wire Types
    3. Wire Size Selection
    4. Wire Identification
    5. Wire Installation and Routing
    6. Lacing and Tying Wire Bundles
    7. Wire Termination
    8. Wire Inspection
  16. Electrical System Components
    1. Switches
    2. Relays and Solenoids (Electromagnetic Switches)
    3. Current Limiting Devices
  17. Aircraft Lighting Systems
    1. Exterior Lights
    2. Interior Lights
    3. Maintenance and Inspection of Lighting Systems
  18. Instrumentation
  19. Classifying Instruments
    1. Flight Instruments
    2. Engine Instruments
    3. Navigation Instruments
  20. Pressure Measuring Instruments
    1. Types of Pressure
    2. Pressure Instruments
    3. Pitot-Static Systems
  21. Remote Sensing and Indication
    1. Synchro-Type Remote-Indicating Instruments
  22. Inertial Navigation System (INS)/Inertial Reference System (IRS)
  23. Mechanical Movement Indicators
    1. Tachometers
    2. Synchroscope
    3. Accelerometers
    4. Stall Warning and Angle of Attack (AOA) Indicators
  24. Temperature Measuring Instruments
    1. Non-Electric Temperature Indicators
    2. Electrical Temperature Measuring Indication
    3. Thermocouple Temperature Indicators
    4. Total Air Temperature Measurement
  25. Direction Indicating Instruments
    1. Magnetic Compass
    2. Vertical Magnetic Compass
    3. Remote Indicating Compass
    4. Remote Indicating Slaved Gyro Compass (FluxGate Compass)
    5. Solid State Magnetometers
  26. Sources of Power for Gyroscopic Instruments
    1. Vacuum Systems
    2. Pressure-Driven Gyroscopic Instrument Systems
    3. Electrically Driven Gyroscopic Instrument Systems
  27. Principles of Gyroscopic Instruments
    1. Mechanical Gyros
    2. Solid State Gyros and Related Systems
  28. Common Gyroscopic Instruments
    1. Vacuum-Driven Attitude Gyros
    2. Electric Attitude Indicators
    3. Gyroscopic Direction Indicator or Directional Gyro (DG)
    4. Turn Coordinators
    5. Turn-and-Slip Indicator
  29. Autopilot Systems
    1. Basis for Autopilot Operation
  30. Autopilot Components
    1. Sensing Elements
    2. Computer and Amplifier
    3. Output Elements
    4. Command Elements
    5. Feedback or Follow-up Element
    6. Autopilot Functions
    7. Yaw Dampening
  31. Automatic Flight Control System (AFCS)
  32. Flight Director Systems
  33. Electronic Instruments
    1. Electronic Attitude Director Indicator (EADI)
    2. Electronic Horizontal Situation Indicators (EHSI)
  34. Electronic Flight Information Systems
    1. Electronic Flight Instrument System (EFIS)
    2. Engine Indicating and Crew Alerting System (EICAS)
  35. Flight Management System (FMS)
  36. Warnings and Cautions
    1. Annunciator Systems
    2. Aural Warning Systems
  37. Clocks
  38. Instrument Housings and Handling
  39. Instrument Installations and Markings
    1. Instrument Mounting
    2. Instrument Power Requirements
    3. Instrument Installations and Markings
  40. Maintenance of Instruments and Instrument Systems
    1. Altimeter Tests
    2. Pitot-Static System Maintenance and Tests
    3. Tachometer Maintenance
    4. Magnetic Compass Maintenance and Compensation
    5. Vacuum System Maintenance
    6. Autopilot System Maintenance
    7. LCD Display Screens
  41. Communication and Navigation
    1. Avionics in Aviation Maintenance
    2. History of Avionics
  42. Fundamentals of Electronics
    1. Analog Versus Digital Electronics
    2. Analog Electronics
  43. Radio Communication
    1. Radio Waves
    2. Loading Information onto a Radio Wave
    3. Radio Transmitters and Receivers
    4. Antennas
  44. Radio Navigation
    1. VOR Navigation System
    2. Automatic Direction Finder (ADF)
    3. Radio Magnetic Indicator (RMI)
    4. Instrument Landing Systems (ILS)
    5. Distance Measuring Equipment (DME)
    6. Area Navigation (RNAV)
    7. Radar Beacon Transponder
    8. Collision Avoidance Systems
    9. Radio Altimeter
    10. Weather Radar
    11. Emergency Locator Transmitter (ELT)
    12. Long Range Aid to Navigation System (LORAN)
    13. Global Positioning System (GPS)
  45. Inertial Navigation System (INS)/Inertial Reference System (IRS)
  46. Installation of Communication and Navigation Equipment
    1. Approval of New Avionics Equipment Installations
    2. Considerations
    3. Cooling and Moisture
    4. Vibration Isolation
  47. Reducing Radio Interference
    1. Shielding
    2. Isolation
    3. Bonding
    4. Static Discharge Wicks
  48. Installation of Aircraft Antenna Systems
    1. Transmission Lines
    2. Maintenance Procedure

Effective Term:
Fall 2024