Aircraft Electrical Systems and Components
AC (Advisory Circular)
43.13-1B
CHAPTER 11. AIRCRAFT ELECTRICAL SYSTEMS
SECTION 20. ELECTRICAL AND ELECTRONIC
SYMBOLS
The function of the aircraft electrical system is to
generate, regulate and distribute electrical power
throughout the aircraft.
Aircraft electrical components operate on
different voltages both AC and DC.
Most aircraft systems use 115 volts AC at 400
hertz (Hz) or 12-28 volts DC.
Textbook page 168
Electrical Units of Measure
Voltage
(pressure) unit of measure is the
Volt
Current
(flow) unit of measure is the
Ampere
(amp)
Resistance
(friction) unit of measure is the
Ohm
Power
(force) unit of measure is the
Watt
Diagrams
Coaxial or Coax Cable
Choice of materials and dimensions
determines the cable's electrical
properties, including attenuation at
various frequencies.
Never kink
coaxial cable.
Never drop
anything on coaxial cable.
Never step
on coaxial cable.
Never bend
coaxial cable sharply.
Never loop
coaxial cable tighter than the
allowable bend radius.
Never pull
on coaxial cable except in a straight
line.
Circuit Control and Protection
Switch
Circuit Breaker
Fuse
Federal Aviation Regulation:
23.1365 Electric cables and equipment.
(a) Each electric connecting cable must be of
adequate capacity.
(b) Any equipment that is associated with any
electrical cable installation and that would overheat
in the event of circuit overload or fault must be
flame resistant. That equipment and the electrical
cables must not emit dangerous quantities of toxic
fumes.
Cable must be separated from flammable fluid
lines;
Federal Aviation Regulation
23.1367 Switches
Each switch must be—
(a) Able to carry its rated current;
(b) Constructed with enough distance or insulating
material between current carrying parts and the
housing so that vibration in flight will not cause
shorting;
(c) Accessible to appropriate flight crewmembers;
and
(d) Labeled as to operation and the circuit
controlled.
Textbook page 255-260
American Wire Gauge
(
AWG
)
Is a system used predominantly in the United
States and Canada for the diameters of round,
solid, nonferrous, electrically conducting wire.
The cross-sectional area of each gauge is an
important factor for determining its current
carrying capacity.
Increasing gauge numbers give decreasing wire
diameters.
The Federal Communications Commission
regulates interstate and international
communications by radio, television, wire,
satellite and cable in all 50 states.
It was established by the Communications Act of
1934 and operates as an independent U.S.
government agency overseen by Congress.
General Radiotelephone Operator
License
Is required to adjust, maintain, or internally
repair FCC licensed radiotelephone transmitters
in the aviation, maritime, and international fixed
public radio services.
http://www.youtube.com/watch?v=mhKTBJzl-Qk
Fly By Wire
Aircraft electrical systems play a crucial role in generating, regulating, and distributing electrical power throughout an aircraft. This includes components operating on different voltages like AC and DC, with standard units of measure for voltage, current, resistance, and power. The choice of materials in cables affects their electrical properties, and proper handling practices are essential to prevent damage. Circuit control and protection devices such as circuit breakers and fuses are key for safety compliance with regulations like Federal Aviation Regulation 23.1365.
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Presentation Transcript
AC (Advisory Circular) 43.13-1B CHAPTER 11. AIRCRAFT ELECTRICAL SYSTEMS SECTION 20. ELECTRICAL AND ELECTRONIC SYMBOLS
The function of the aircraft electrical system is to generate, regulate and distribute electrical power throughout the aircraft.
Aircraft electrical components operate on different voltages both AC and DC. Most aircraft systems use 115 volts AC at 400 hertz (Hz) or 12-28 volts DC. Textbook page 168
Electrical Units of Measure Voltage (pressure) unit of measure is the Volt Current (flow) unit of measure is the Ampere (amp) Resistance (friction) unit of measure is the Ohm Power (force) unit of measure is the Watt
Coaxial or Coax Cable Choice of materials and dimensions determines the cable's electrical properties, including attenuation at various frequencies.
Never kink coaxial cable. Never drop anything on coaxial cable. Never step on coaxial cable. Never bend coaxial cable sharply. Never loop coaxial cable tighter than the allowable bend radius. Never pull on coaxial cable except in a straight line.
Circuit Control and Protection Switch Circuit Breaker Fuse
Federal Aviation Regulation: 23.1365 Electric cables and equipment. (a) Each electric connecting cable must be of adequate capacity. (b) Any equipment that is associated with any electrical cable installation and that would overheat in the event of circuit overload or fault must be flame resistant. That equipment and the electrical cables must not emit dangerous quantities of toxic fumes. Cable must be separated from flammable fluid lines;
Federal Aviation Regulation 23.1367 Switches Each switch must be (a) Able to carry its rated current; (b) Constructed with enough distance or insulating material between current carrying parts and the housing so that vibration in flight will not cause shorting; (c) Accessible to appropriate flight crewmembers; and (d) Labeled as to operation and the circuit controlled. Textbook page 255-260
American Wire Gauge (AWG) Is a system used predominantly in the United States and Canada for the diameters of round, solid, nonferrous, electrically conducting wire. The cross-sectional area of each gauge is an important factor for determining its current carrying capacity. Increasing gauge numbers give decreasing wire diameters.
http://de.academic.ru/pictures/dewiki/50/220px-Wire_gauge_%28PSF%29.pnghttp://de.academic.ru/pictures/dewiki/50/220px-Wire_gauge_%28PSF%29.png
The Federal Communications Commission regulates interstate and international communications by radio, television, wire, satellite and cable in all 50 states. It was established by the Communications Act of 1934 and operates as an independent U.S. government agency overseen by Congress.
General Radiotelephone Operator License Is required to adjust, maintain, or internally repair FCC licensed radiotelephone transmitters in the aviation, maritime, and international fixed public radio services.
Fly By Wire http://www.youtube.com/watch?v=mhKTBJzl-Qk
