Automatic sextant

Details Automatic sextant Automatic sextant

1984-03-16

1987-11-24

Haroian, Harry N.

Geometrical instruments

Straight-line light ray type

With telemetric means

G01C 108

Patent

active

047079266

ABSTRACT:
A sextant for indicating the angular separation between two objects, including two members interconnected at a pivot point, means for adjusting the angle between the members to be indicative of the angular separation between the objects, the means for adjusting including coarse and fine adjustment means, and a pair of encoders for converting the respective positions of the coarse and fine adjustment means to signals which are together indicative of the angular separation. In other aspects, there is a single encoder having a track on the sextant arc and a sensor on the tangent arm; and an indicator tells the user when the sextant has been set to the prestored altitudes of reference celestial bodies.

REFERENCES:
patent: 3194949 (1965-07-01), Jasperson
patent: 3360638 (1967-12-01), Lillestrand et al.
patent: 3482321 (1969-12-01), Inshaw
patent: 3752591 (1973-08-01), Feldman
patent: 3854037 (1974-12-01), Feldman et al.
patent: 3912397 (1975-10-01), Zoltan
patent: 3968570 (1976-07-01), Leuchter, Jr.
patent: 3985446 (1976-10-01), Feldman et al.
patent: 4082462 (1978-04-01), Owen
patent: 4083636 (1978-04-01), Owen
patent: 4197653 (1980-04-01), Laxo

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