Questions and Answers
What are the compass errors? (Select all that apply)
What is variation?
Caused by the difference between true north and magnetic north.
What is deviation?
Error of the magnetic compass caused by electrical fields inside the aircraft.
What is dip error?
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What are the types of dip? (Select all that apply)
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What is the northerly turning error?
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What is acceleration error?
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What is oscillation error?
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Study Notes
Compass Errors
- Compass errors include variation, deviation, dip error, northerly turning error, acceleration error, and oscillation error.
Variation
- Variation arises from the discrepancy between true north and magnetic north.
Deviation
- Deviation is an error caused by electrical fields present inside the aircraft, affecting the compass reading.
Dip Error
- Dip error occurs due to vertical magnetic flux lines, causing the compass card to tilt downward.
- A compensating weight is used to counteract the dipping effect, particularly effective in mid-latitude regions.
Types of Dip
- Types of dip errors encompass northerly turning error and acceleration error.
Northerly Turning Error
- During a turn from a northerly heading, the compass lags behind.
- Conversely, when turning from a southerly heading, the compass leads the turn.
- Remember: "Lead South - Lag North" for understanding this error.
Acceleration Error
- In acceleration, the north end of the compass leans back, indicating a more northerly heading.
- During deceleration, the north end moves forward, resulting in a more southerly heading.
- Acronym: "ANDS" - Acceleration equals North, Deceleration equals South.
Oscillation Error
- Oscillation error involves a combination of all other compass errors, leading to the compass swinging back and forth around the actual heading.
- To mitigate this, use the average of the compass indications during the swings.
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Description
Test your knowledge on magnetic compass errors with these flashcards. Learn about various errors such as variation, deviation, dip error, and more. Perfect for aviation students or anyone interested in navigation.
