Magnetic Compass Oscillation Error

Maps and charts are drawn using meridians of longitude that pass through the geographic poles. In airplanes your compass is almost always set on top of the dash or hung from the top of the windshield frame in order to keep it as far away from electrical gear as possible to reduce magnetic deviation more on this later. Truemagneticcompass heading and course atpl duration.
magnetic compass oscillation error

Inspiration Magnetic Compass Oscillation Error, Steel being ferro magnetic are magnetized in the process of ship construction.

Magnetic compass oscillation error. Compass bearing true bearing magnetic variation compass deviation. The magnetic compass has been used in navigation for more than 1000 years and in aviation since at least 1909. Magnets in a compass make it align with the magnetic north pole. Magnetic variation is the angle between magnetic north and true north and is caused by the different locations of the geographic north pole and the magnetic north pole.

The magnetic compass is the simplest instrument in the panel but it is subject to a number of errors that must be considered. The boats compass and a hand bearing compass point to the magnetic pole but all bearings on charts are related to the geographic pole true north. Magnetic variation is due to the differing positions of the geographic north pole and the magnetic north pole. This simple device continues to be standard equipment in todays aircraft in part because of its reliable nature and minimal need for maintenance.

Modern ships are made of numerous plates of steel. Would you like to support this channel and help us grow. When setting the gyroscopic heading indicator to agree with the magnetic compass use the average indication between the swings. Magnetic compass induced errors.

Oscillation is a combination of all of the other errors and it results in the compass card swinging back and forth around the heading being flown. They are cut bent into shapes and welded in place. Traffic pattern emergencies private pilot lesson 7h duration. Magnetic compass is the most primal and basic instruments used by the pilot to determine or verify aircraft heading.

A graduated scale called a card is wrapped around the float and viewed through a glass window with a lubber line across it. The earth rotates about its geographic axis.