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Magnetic heading referenceThis invention employs a magnetometer as a magnetic heading reference for a vehicle such as a small aircraft. The magnetometer is mounted on a directional dial in the aircraft in the vicinity of the pilot such that it is free to turn with the dial about the yaw axis of the aircraft. The invention includes a circuit for generating a signal proportional to the northerly turning error produced in the magnetometer due to the vertical component of the earth's magnetic field. This generated signal is then subtracted from the output of the magnetometer to compensate for the northerly turning error.
Document ID
19770012112
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Garner, H. D. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 8, 2013
Publication Date
February 8, 1977
Subject Category
Aircraft Communications And Navigation
Report/Patent Number
Patent Number: US-PATENT-4,006,631
Patent Application Number: US-PATENT-APPL-SN-623156
Patent Application Number: US-PATENT-APPL-SN-531647
Patent Number: NASA-CASE-LAR-11387-2
Accession Number
77N19056
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-PATENT-4,006,631|NASA-CASE-LAR-11387-2
Patent Application
US-PATENT-APPL-SN-623156|US-PATENT-APPL-SN-531647

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