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Heading Indicator
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Heading Indicator By:
Lucas Chumbler
Gaven Arnold
Laiton Keith
If your heading indicator goes from 0 (or 10) to 35 (or 36), then it is showing headings in ten degree increments. North is often indicated by N instead of 0 or 36. Similarly for S, E, and W.
Heading indicator
Another type of caging mechanism utilizes friction between rubber and metal rings.) After setting, the gyro is uncaged. by pulling out the caging knob to release the gimbals from the caging mechanism. Before setting the instrument during ground operations, allow 5 minutes after engine starting for the gyro to reach operating speed.
A major difference it has with the compass is that it doesn't rely on the earth's magnetic field to operate.
The primary means of establishing the heading in most small aircraft is the magnetic compass, which, however, suffers from several types of errors.
Heading Indicator
Including that created by the "dip" or downward slope of the Earth's magnetic field. Dip error causes the magnetic compass to read incorrectly whenever the aircraft is in a bank, or during acceleration, making it difficult to use in any flight condition other than perfectly straight and level. To remedy this, the pilot will typically maneuver the airplane with reference to the heading indicator.
As the gyroscopic heading indicator is unaffected by dip and acceleration errors. The pilot will periodically reset the heading indicator to the heading shown on the magnetic compass.[2][1]
The heading indicator (also called an HI) is a flight instrument used in an aircraft to inform the pilot of the aircraft's heading. It is sometimes referred to by its older names, the directional gyro or DG, and also (UK usage) direction indicator or DI.