ADF Navigation System

Airborne Equipment
1. Automatic Direction Finder
  1. System
    1. Indicator
      1. Fixed Compass Card Indicator or Relative Bearing Indicator
        0 degree coincides with Aircraft Nose
        ADF Pointer shows Relative Bearing
        Fixed Compass Card
      2. Rotating Compass Card Indicator
        Manually Adjusted Compass Card
        ADF Pointer shows Magnetic Bearing
      3. Radio Magnetic Indicator
        Automatic Adjusted Compass Card
        ADF Pointer shows Magnetic Bearing
    2. Control Panel
      1. Modes
        ADF
        Combine Loop and Sense Antenna
        ANT / REC
        Sense Antenna only
        LOOP
        Loop Antenna only
        BFO
        Audio Tone
        TEST
        Self Check
    3. Receiver
      1. Processes Loop and Sense Signals
        Drives a Motor
        Rotates Loop Antenna
        Rotates ADF Pointer
    4. Antenna Assembly
      1. Loop Antenna
        Inductive Type
        Senses Magnetic Field (H)
        Radiation Pattern
        Figure of Eight
      2. Sense Antenna
        Capacitive Type
        Senses Electric Field (E)
        Radiation Pattern
        Omni-directional
      3. Combined Loop and Sense Antenna
        Radiation Pattern
        Cardioid Pattern
  2. Radio Frequencies
    1. 190 kHz to 1750 kHz
    2. Low and Medium Frequencies
Ground Station
1. Non-directional Beacon
  1. Types
    1. Compass Locator
      1. Lower Power
    2. NDB Approach Facility
      1. Low to Medium Power
    3. En-route Airway Beacon
      1. Medium Power
    4. Coastal Beacon
      1. High Power
  2. System
    1. Transmitter
      1. Radio Frequencies
        190 kHz to 535 kHz
      2. Power
        25 to 2000 watts
      3. Broadcast Message
        Morse Code (i.e. dots and dashes)
        Voice (e.g. weather forecast)
    2. Vertical Antenna
      1. Radiation Pattern
        Omni-directional
      2. Vertical Polarization

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	Criado por KIM SENG TANG quase 8 anos atrás