In the early days of what is familiarly called "aircraft electrics", there was a certain distrust of the equipment, Although there was acceptance of the fact that electricity was necessary for operating the "wireless" equipment, a few lights and an engine ignition system, many individuals were inclined to the view that if other systems could not be operated either by air, hydraulic oil, cables, numerous mechanical linkages or petrol.
With the continued development of the various types of aircraft, the sources of electrical power have also varied from the simple battery and wind-driven generator, through to the most complex multiple AC generating systems. Similarly, the application of power sources have varied and in conjunction with developments in electronics, has spread into the areas of other systems to the extent of performing not only a controlling function but, as is now so often the case, the entire operating function of a system.
The satisfactory performance of any modern aircraft depends to a very great degree on the continuing reliability of electrical systems and subsystems. Improperly or carelessly installed or maintained wiring can be a source of both immediate and potential danger. The continued proper performance of electrical systems depends on the knowledge and technique of the mechanic who installs, inspects, and maintains the electrical system wires and cables.
Aircraft Electrical System Series
1. Ohm’s Law, Current, Voltage and Resistance
Learn the fundamental electrical principles used in aircraft systems including current, voltage, resistance, and Ohm’s Law.
View Topic →2. Electromagnetic Generation of Power
Understand how electromagnetic induction produces electrical power in aircraft generators and alternators.
View Topic →3. Alternating Current (AC) Introduction
An overview of alternating current, its characteristics, and its importance in modern aircraft electrical systems.
View Topic →4. Opposition to Current Flow of AC
Explore impedance, capacitance, and inductance and how they affect alternating current flow.
View Topic →5. Aircraft Batteries
Introduction to aircraft battery types, construction, operation, and their role in aircraft electrical systems.
View Topic →6. Aircraft Battery Maintenance
Learn proper inspection, maintenance, installation practices, and troubleshooting of aircraft batteries.
View Topic →7. DC Generators and Controls
Understand the operation of DC generators and the control systems used to regulate electrical output.
View Topic →8. Generator Controls
Explore voltage regulators, reverse current relays, and other generator control components.
View Topic →9. DC Alternators and Controls
Learn how DC alternators operate and how their output is controlled in aircraft electrical systems.
View Topic →10. Power Systems and AC Alternators
An overview of AC power systems and alternators used in modern aircraft.
View Topic →11. Alternator Drive and Control Systems
Understand alternator drive mechanisms and control systems that regulate AC electrical power.
View Topic →12. Single-Engine Aircraft Electrical System
Understand the electrical system layout and operation in small single-engine aircraft.
View Topic →13. Multiengine Aircraft Electrical System
Explore the complexity of electrical systems used in multiengine aircraft.
View Topic →14. Wiring Diagrams and Wire Types
Learn how to read aircraft wiring diagrams and identify different wire types.
View Topic →15. Wire Size Selection
Understand how proper wire size is selected to ensure safe and efficient electrical operation.
View Topic →16. Wire Identification
Explore aircraft wire marking systems and identification standards.
View Topic →17. Wire Installation and Routing
Learn proper wire routing, lacing, and tying techniques for aircraft wire bundles.
View Topic →18. Wire Termination
Understand proper wire termination methods including connectors, terminals, and crimping techniques.
View Topic →19. Electrical System Components
Explore common aircraft electrical components including relays, switches, circuit breakers, and buses.
View Topic →20. Aircraft Lighting System
Learn about internal and external aircraft lighting systems used for visibility and safety.
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