HSI/Compass Flashcards
Displays can be _______ systems or _______ displays.
Analog or Electronic
What are the 6 navigational sources?
Magnetic
Gyroscopic
Inertial Reference System
Global Positioning System
Celestial
Ground Mapping
What are the 5 systems incorporated into a typical HSI?
The CDI
Glide slope Indicator (ILS)
RMI
Heading indicator/DG
VOR
Where is the HSI located?
Bottom center of the Critical Six
The most modern HSI displays are electronic and often integrated with what?
electronic flight director systems into so-called “glass cockpit” systems.
What is CDS?
The Copilot Display System
A magnetic compass uses what to provide a direction?
the Earth’s magnetic field or magnetic lines of flux
The main advantage of the magnetic compass is what?
it requires no power source to use
How is deviation corrected in the aircraft?
by the technician
The process of correcting deviation is known as what?
Compass Swing
Compass swings take place where?
at a compass rose
What would you use a non-magnetic screwdriver for?
Set adjustment screws (compensating screws)
What color is the Master Compass?
Red
*Reads 180 degrees from the direction you are actually facing
After facing the aircraft to magnetic North, adjust the N-S compensating screw until the compass reads what?
Exactly North (0 degrees)
After facing the aircraft East, adjust the E-W compensating screw until the compass reads exactly what?
East (90 degrees)
After facing the aircraft South, adjust the N-S screw to:
take out half of the error
After facing the aircraft west, adjust the E-W screw to:
take out half the error
Deviation cannot exceed what?
+- 10 degrees on any heading
How often should the compass be checked (swung)?
whenever there is an installation or removal of any radio equipment or any other equipment that could have an effect on the compass.
The ___ ___ ___ compass system is a type of remote indicating earth inductor compass system.
gyro flux gate
The compass coupler processes what?
the long-term, compensated magnetic field sensor signal
The coupler compensates for:
magnetic heading errors in the flux valve due to longitudinal and Coriolis acceleration.
In the DG mode, the coupler output reflects:
the heading output of the directional gyro
The purpose of the repeater or compensator is what?
to help remove any deviation error
