development of compasses...in magnetic compasses when airplanes suddenly change course. The corrective mechanism is a gyroscope, which has the property of resisting efforts to change its axis of spin. This system is called a gyromagnetic compass.
importance in alteration of courseThe errors that occur in aircraft and small, fast vessels during alterations of course or speed can be avoided by mounting the compass on a platform kept horizontal by a gyroscope. The directive element must be nonpendulous. The vertical pin supporting the compass needle can be pivoted at both ends, or an inductor element can be employed. In one such arrangement, a saturable-inductor compass...
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