Navigation Functions Flashcards
The ARN-149 ADF radio is controlled by what means?
NAV RADIOS page on the CDU
What do the angular accelerometers measure?
How aircraft is twisting in space (Yaw, Pitch, Roll)
Where is the ARN-153 TACAN R/T located?
Under companionway floor next to CVDR (STA 100)
How many antennas are associated with ARN-147 VOR/ILS/MB system?
3 (VOR/ILS,GS,MB)
Over what frequency range does the VOR/Localizer receiver receive and process signals?
108-117.95 MHz
How many channels does the ARN-153 TACAN have?
252 (126 X and 126 Y)
Which MFD display page is the navigation bearing pointers and course deviation indicator selected?
OVERLAY 1 page
What are SA/AS codes? (Explain the acronym and their function)
Selective Availability / Anti-Spoofing. Prevents jamming, only allows use by personnel with selected codes.
How would you select the SA/AS codes for use on the GPS1?
Change constellation type on GPS page from INAV page
Where is the ARN-153 TACAN R/T antenna located?
Bottom of the helicopter
Where is the ARN-149 ADF antenna located?
Bottom of the helicopter
Where are the EGIs located?
Bottom of the avionics closet
What information is provided by the EGIs?
Position, Vertical Speed, Time Tags, UTC time
Each Inertial Navigation System contains ____ linear accelerometers and ____ angular accelerometers to calculate aircraft position and attitude.
3,3
How many navigation solutions are provided by each EGI?
3 by each (INS Only, GPS Only, Blended GPS/INS)
What’s the difference between TACAN X Channels and TACAN Y Channels?
Normally X are ground stations and Y are airborne stations
What information does the TACAN radio provide?
Bearing, Slant Range, Identification
What is the operating range to an air-to-ground TACAN station for the TACAN radio?
390 Nm
What is the operating range to an (air-to-air) TACAN station for the TACAN radio?
200 Nm
What is an advantage of using a Ring Laser Gyro for the INU system?
No moving parts, little inherent drift, compact/lightweight, virtually indestructible
To calculate aircraft position and attitude, each Internal Navigation System contains three linear accelerometers and three ____ accelerometers.
Angular
F models will give ____ information when paired together
Distance
