SPIN RATE AND POSITION MEASUREMENT TELEMETRY SYSTEM

Abstract

As part of an effort to reduce a projectile’s spin, a telemetry system was developed in order to measure spin rate and position of a given point on a round during flight. The telemetry system consisted of twelve special sensors (sensitive to sun light) which were installed on the shell’s perimeter and an electronic system, that converted the sensors’ analog output into a conventional PCM stream that was transmitted, received, and decoded into position and spin rate. The telemetry system although exposed to very severe environmental conditions such as high G’s, vibration and temperature, operated successfully.