Aircraft velocity-altitude measuring means

Details Aircraft velocity-altitude measuring means Aircraft velocity-altitude measuring means

1980-09-29

1982-01-05

Buczinski, S. C.

Optics: measuring and testing

Velocity or velocity/height measuring

With light detector

356 4, G01P 336, G01C 308

Patent

active

043091040

ABSTRACT:
The invention contemplates use of a cylindrical lens oriented transverse to an aircraft axis, in conjunction with two light-sensitive detectors in the image plane of the lens, to develop two time-displaced electrical output signals which represent aircraft-motion scanning of terrain by the respective detectors; basically simple circuitry develops the velocity-altitude ratio by measuring the instantaneous displacement time between the two signals. The same cylindrical lens and detecting circuitry may be provided in multiple and in particular relative orientations, to additionally develop drift-angle of the aircraft axis with respect to its instantaneous ground-velocity vector.

REFERENCES:
patent: 2866373 (1958-12-01), Doyle et al.
patent: 3018555 (1962-01-01), Willey et al.
patent: 3057071 (1962-10-01), Sinn
patent: 3059521 (1962-10-01), Clemens et al.
patent: 3799671 (1974-03-01), Schweizer
patent: 3994583 (1976-11-01), Hutchins

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