Artificial horizon device

Optics: measuring and testing – Fiducial instruments – Artificial reference

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Details

350 66, 350486, G01C 902

Patent

active

043975550

ABSTRACT:
The invention provides an artificial horizon device having a light source of limited power which can be positioned remotely from the aircraft cockpit. A scanning mechanism is mounted in the cockpit to receive light from the light source and to project a light bar representing the true horizon by scanning a projected light beam along the perceived bar at a frequency sufficiently high that the bar is perceived as a continuous projection.

REFERENCES:
patent: 3315563 (1967-04-01), Harper et al.
patent: 4083239 (1978-04-01), Malcolm et al.
Jablonowski et al., "Galvanometer Deflection: A Precision High-Speed System," Applied Optics, vol. 15, No. 6, pp. 1437-1443, Jun. 1976.

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