Podcast
Questions and Answers
Why is a compass filled with a liquid?
Why is a compass filled with a liquid?
- To reduce the effects of friction and wear
- To make it aperiodic (correct)
- To increase the weight on the pivot
- To amplify the dip angle
What is the purpose of a damping device in a compass?
What is the purpose of a damping device in a compass?
- To amplify the dip angle
- To make the magnet system dead beat or aperiodic (correct)
- To reduce the effects of friction and wear
- To increase the oscillation of the magnet system
What is a desirable property of a liquid used in a compass?
What is a desirable property of a liquid used in a compass?
- Corrosive properties
- High viscosity
- Low freezing point (correct)
- High reactivity
What is the effect of the movement of the magnet system and its spider in the liquid?
What is the effect of the movement of the magnet system and its spider in the liquid?
What is the purpose of a flexible element in a liquid-filled compass?
What is the purpose of a flexible element in a liquid-filled compass?
What is the benefit of the liquid in a compass in terms of the weight on the pivot?
What is the benefit of the liquid in a compass in terms of the weight on the pivot?
What type of liquids are normally used in compasses?
What type of liquids are normally used in compasses?
What can cause a compass to become unserviceable?
What can cause a compass to become unserviceable?
Why is it important to check a new compass from overseas before use on Australian aircraft?
Why is it important to check a new compass from overseas before use on Australian aircraft?
Why is low power lighting used in a compass?
Why is low power lighting used in a compass?
What is used to supply power to the compass's illumination?
What is used to supply power to the compass's illumination?
What is the purpose of compass illumination?
What is the purpose of compass illumination?
What is the effect of the Earth's magnetic field on the voltage induced in each secondary coil?
What is the effect of the Earth's magnetic field on the voltage induced in each secondary coil?
What is the purpose of the collector horns in the flux valve?
What is the purpose of the collector horns in the flux valve?
What is the output of the flux valve indicative of?
What is the output of the flux valve indicative of?
What is the characteristic of the voltage induced in each secondary coil when the flux valve is not exposed to an external magnetic field?
What is the characteristic of the voltage induced in each secondary coil when the flux valve is not exposed to an external magnetic field?
What is the purpose of the primary winding in the flux valve?
What is the purpose of the primary winding in the flux valve?
What determines the direction and intensity of the magnetic field through each leg of the flux valve?
What determines the direction and intensity of the magnetic field through each leg of the flux valve?
What type of error is corrected by rotating the compass or flux valve until the compass reads the corrected heading?
What type of error is corrected by rotating the compass or flux valve until the compass reads the corrected heading?
When does the magnetism in the fuselage have no effect on compass accuracy?
When does the magnetism in the fuselage have no effect on compass accuracy?
What is the purpose of the compensator magnets located in the lateral axis across the aircraft?
What is the purpose of the compensator magnets located in the lateral axis across the aircraft?
What is the direction of the imaginary magnet lying along the fore and aft axis of the aircraft fuselage?
What is the direction of the imaginary magnet lying along the fore and aft axis of the aircraft fuselage?
When does the lateral magnetism modify the magnetic meridian?
When does the lateral magnetism modify the magnetic meridian?
What is the main reason why Coefficient B error affects compass accuracy on east-west headings?
What is the main reason why Coefficient B error affects compass accuracy on east-west headings?
What is the purpose of comparing the datum compass reading with the aircraft compass?
What is the purpose of comparing the datum compass reading with the aircraft compass?
Why should non-magnetic tools be used when performing maintenance on direct-reading compasses?
Why should non-magnetic tools be used when performing maintenance on direct-reading compasses?
What type of cables should be used to connect the compass light to reduce magnetic interference?
What type of cables should be used to connect the compass light to reduce magnetic interference?
What is the purpose of swinging an aircraft compass?
What is the purpose of swinging an aircraft compass?
What type of materials should be used for panels and screws in the vicinity of direct-reading compasses and flux valves?
What type of materials should be used for panels and screws in the vicinity of direct-reading compasses and flux valves?
Why should direct-reading compasses or flux valves not be exposed to magnetic fields?
Why should direct-reading compasses or flux valves not be exposed to magnetic fields?
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