AVI ation Electr ONICS Avionics
FAA Federal Aviation Administration
A and P / Airframe and Power plant Certificate
The FCC and FAA do not currently offer a "Avionics Technician License." What the FCC does offer is the(GROL) "The General Radiotelephone Operators License." You are not required to attend an Avionics Technical School to participate in the FCC examinations or to gain employment as an avionics technician.
CFRs Code of Federal Regulations Title 14 Aeronautics and Space Chapter I FAA, DOT Subchapter A, B, C… Part 1,2,3… Subpart A, B, C Part is the term used in the industry.
FAA.GOV
About gyroscopic rigidity in space. Spatial disorientation.
AC B FIGURE THE BASIC “T” INSTRUMENT CONFIGURATION FARPart (1) The instrument that most effectively indicates attitude must be on the panel in the top center position;
Textbook page 169, 171
Bus In electrical power distribution, a bus bar is a strip or bar that conducts electricity. It is a distribution point in an aircraft electrical system to which the battery and the generators are connected and from which the electrical loads derive their power.
A SWITCH is a device for turning on or off or directing an electric current or for making or breaking a circuit. A CIRCUIT BREAKER is an automatic switch that stops the flow of electric current in a suddenly overloaded or otherwise abnormally stressed electric circuit. A FUSE is a current limiting device
Pitot-Static System Airspeed Vertical Speed Indicator Altimeter
Week 1Chapter 22 Electrical System Answer questions 1 and 3 – 9 Answer all questions except # 2
Week 2 Chapter 26 Aviation Bands and Freqs Answer questions 4 – 7. Week 2 Chapter 25 Wiring the Airplane No questions for now
Save all of your assignments
Chapter 22 Aircraft Electrical Systems
AC (Alternating Current) Generator
Alternating Current
Hz Hertz CPSCycles Per Second Frequency
Amplitude is Voltage
Textbook chapter page 169, 171
Diode Diode: an electronic device that has two terminals and is used especially as a rectifier.
AC converted to DC
LRU Line Replaceable Unit TRU Transformer: change of voltage Rectifier: AC to DC Unit
Oscilloscope Experience?
Chapter 26 Aviation Bands and Frequencies
Radio Frequencies RF Each time current rushes into or out of the antenna, an electromagnetic wave travels outward. A radio signal can be pictured as an alternating flow (the shape of a sine wave).
Frequency Hertz Hz Cycles per second CPS Amplitude Voltage
p231-A RF Bands This was determined by international agreement to provide a global structure. Frequencies which fall within any band behave similarly. Low frequencies hug the earth, following the curve over the horizon. Higher up, frequencies act like light---traveling in straight lines. Compare this from page 231 with page 237.
p233-A Skipping Through the Ionosphere
p235-A Line of Sight Communications
p238-A Ground Wave Transmission
p232-A UHF 300 MHz - 3 GHz SHF 3 GHz - 30 GHz EHF 30 GHz GHz
Chapter 3 VHF Com Very High Frequency Communication
All RADIO Chapters 3-16 and 19, 20 VHFHFSatcomACARS SelcalELTVORILS ADFDMETXPDRRAD ALT WX DetectionTCAS
Transmitter Antenna
Receiver
Radio Frequency CARIER WAVE Information MODULATION Modulated Carrier
Modulation + Carrier Wave = AM Amplitude Modulation Modulation Signal Information Carrier Wave Modulated Carrier Wave
Frequency of the human voice ranges from about 60 to 7000 Hz.
Human hearing range is usually said to be 20 Hz to 20,000 Hz.
Radio Frequency (RF)Spectrum Ranges Very Low Frequency VLF 3 kHz - 30 kHz Low Frequency LF 30 kHz kHz Medium Frequency MF 300 kHz - 3 MHz High Frequency HF 3 MHz - 30 MHz Very High Frequency VHF 30 MHz MHz Ultra High Frequency UHF 300 MHz - 3 GHz Super High FrequencySHF 3 GHz - 30 GHz Extremely High Frequency EHF 30 GHz GHz Aviation VHF Com – MHz
Textbook page 17
For both radio and computer communication
VHF Com Radio Radio can be a single unit connected to an antenna and power or it can be multiple units with many possible audio paths. Textbook page 19
Basic VHF-Navcom Connections Textbook page 18
End if Week 2 Day 1