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Proceedings Paper

OMEGA - Opto-Electronic Measurements Of The Yaw Angle Of Projectiles
Author(s): K. Sterzelmeier
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Paper Abstract

It is the purpose of this paper to describe an opto-electronic method which allows non-contacting and non-reactive measurements to be performed of the space position of a rod-shaped body in free-flight such as a projectile. The beam of light from a laser is widened to form a thin lighting row oriented preferably normal to the direction of flight. As the subject under investigation passes through the plane of measurement, a light spot is observed on the surface of the test object, which drifts more or less strongly with the angle of attack and angle of precession. This motion is imaged on two uniaxial position-sensitive photodiodes. The photocurrent generated is recorded by means of a four-channel transient recorder which, in turn, is connected to an electronic computer. Here the data measured are analyzed, the velocity, angle of attack and angle of precession of the test object thereby being determined from the discrete absolute values of the photocurrents and their functions of time. The first measurements achieved show the angular resolution to be 0.1°.

Paper Details

Date Published: 1 February 1985
PDF: 6 pages
Proc. SPIE 0491, 16th Intl Congress on High Speed Photography and Photonics, (1 February 1985); doi: 10.1117/12.967971
Show Author Affiliations
K. Sterzelmeier, French-German Research Institute (France)

Published in SPIE Proceedings Vol. 0491:
16th Intl Congress on High Speed Photography and Photonics
Michel L. Andre; Manfred Hugenschmidt, Editor(s)

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