Accession Number : ADA133343

Title :   Optical Fiber Lightguide Sensing for Gimbal Pickoffs.

Descriptive Note : Technical rept.,

Corporate Author : ARMY MISSILE COMMAND REDSTONE ARSENAL AL GUIDANCE AND CONTROL DIRECTORATE

Personal Author(s) : Rodgers,Aubrey

PDF Url : ADA133343

Report Date : Jun 1983

Pagination or Media Count : 14

Abstract : The application of optical fiber lightguides in gimbal pickoffs is under study by the U.S. Army Missile Command. Laser diodes or light-emitting diodes, optical fibers, and solid-state light detectors can save space and weight in inertial-guidance systems for missiles and projectiles. Because they are non-contacting and have no moving parts, optical components are free of friction, gimbal-wiring, slip ring torques, potentiometer-wiper lift-off during flight, and noise. The sensors and optical fibers may also reduce manufacturing costs. The study recommends that the concept use the pulse-duration-modulation design as an inner-gimbal wide-angle position sensor, described in the author's earlier report, T-79-81, AD-A076 372. For the outer gimbal, the light intensity concept, as described in this report, is proposed as a wide-angle position sensor. This concept provides a linear range of + or - 35 degrees with a nonlinear repeatable range up to + or - 90 degrees. (Author)

Descriptors :   *Inertial guidance, *Stabilized platforms, *Optical waveguides, *Optical detectors, *Fiber optics, *Light transmission, *Gimbals, Optical equipment components, Light emitting diodes, Position finding, Low costs, Stabilization systems, Line of sight, Wide angles, Ball bearings, Pulse duration modulation, Guided projectiles, Rotation, Gyro stabilizers, Torque, Reduction, Angular acceleration, Attitude(Inclination), Target position indicators, Targets, Tracking, Infrared detectors, Television guidance, Millimeter waves, Guided missiles

Subject Categories : Machinery and Tools
      Optical Detection and Detectors
      Air Navigation and Guidance
      Fiber Optics and Integrated Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE