Accession Number : ADD011642

Title :   Optical System for Measuring Shadowgraph Data.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Cole,E O ; Yeterian,V H

Report Date : 19 Feb 1985

Pagination or Media Count : 11

Abstract : An optical system for measuring azimuth and elevation angular data for making a shadowgraph of an object under study. The system includes a pair of scaled assemblies which are secured together perpendicular to each other, with each of the scaled assemblies having degree markings thereon. An object under study, such as a scale model of an aircraft, is positioned within an imaginary sphere formed by the two scaled assemblies. Azimuth and elevation angular measurements are then obtained by the use of laser systems as the model aircraft is rotated within the imaginary sphere of the ring assemblies. (Author).

Descriptors :   *PATENTS, *AIRCRAFT MODELS, *OPTICAL INSTRUMENTS, AIRCRAFT ANTENNAS, LINE OF SIGHT, AZIMUTH, ELEVATION, ANGLES, MEASURING INSTRUMENTS, LASER APPLICATIONS

Subject Categories : Aircraft
      Optical Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE