NAV AIDS I

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By: sharanequitania (21 month(s) ago)

can i request your permission to download a copy of this presentation. thank you

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Navigation: 

Navigation is the art and science of directing the movements of a craft from one point to another along the desired path Water Air Land Navis = ship Agere = to move

METHODS OF NAVIGATION: 

METHODS OF NAVIGATION Piloting or Pilotage Dead Reckoning Celestial Navigation Electronic or Radio Navigation

PILOTAGE: 

PILOTAGE navigation by visual contact by following terrain features and correlating what is seen with the aeronautical chart Electric pilotage – when in poor visibility

DEAD RECKONING: 

DEAD RECKONING estimating position by calculating the distance , direction , and amount of time that a craft has traveled.

NAVIGATIONAL AIDS: 

NAVIGATIONAL AIDS

CELESTIAL NAVIGATION: 

CELESTIAL NAVIGATION using information (i.e. angular position ) obtained from celestial bodies sextant chronometer

SEXTANT: 

SEXTANT The scale is an arc of one-sixth of a circle, or 60 degrees. Each degree on the scale of the sextant is equivalent to two degrees of angular distance between the objects (sun & horizon) actually observed.

RADIO NAVIGATION: 

RADIO NAVIGATION involves the use of electromagnetic waves to find the position of the craft ADF VOR ILS RMI MLS

Automatic Direction Finding (ADF): 

Automatic Direction Finding (ADF) It is a navigational aid that is used for automatic determination of relative bearing to a transmitting radio station or non-directional beacon (NDB). 190 kHz – 1860 kHz Used in 1935

ADF Operation: 

ADF Operation NDB at ground transmits AM signal in omni-directional pattern The receiver on the aircraft receives the signal in a combined loop and sense antenna to give the relative bearing The ADF receiver swings a pointer on the instrument panel

PowerPoint Presentation: 

ADF Dial

Radio Magnetic Indicator (RMI): 

Radio Magnetic Indicator (RMI) Shows both the bearing indicator and the heading indicator

VERY-HIGH FREQUENCY NAVIGATION SYSTEM: 

VERY-HIGH FREQUENCY NAVIGATION SYSTEM The VHF navigation system gives lateral guidance in airway flights or lateral and vertical guidance in approach. In addition, it gives distance information to the runway at fixed points.

Ground Stations: 

Ground Stations VOR -beacon for lateral guidance in airway flights. US Standard in 1946 ICAO Standard in 1949 ILS -beacons for lateral and vertical guidance during the approach. US Standard in 1942 ICAO Standard in 1947 Marker Beacon- for distance information to the runway.

VOR Purpose: 

VOR Purpose To provide the crew with relative bearing of the station & course deviation.

VOR: 

VOR

VOR Station: 

VOR Station 25 to 200 W 108 to 117.95 MHz 50kHz/ch 200 ch

VOR Operation: 

VOR Operation VOR beacon (ground) transmits signals (radials) in all directions VOR beacon transmits two modulating signals – a 30 Hz reference signal and a 30 Hz variable signal At VOR receiver, radial is measured from the diff. in phase between the two transmitted signals Navigation indicator