Accession Number:

AD0766647

Title:

Fiber Optics Particle-Sizing System

Descriptive Note:

Final rept. Jul 1971-Jun 1972

Corporate Author:

ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFB TN

Personal Author(s):

Report Date:

1973-09-01

Pagination or Media Count:

89.0

Abstract:

A fiber optics particle-sizing system is discussed with respect to theory of operation and data acquisition and reduction techniques. The system uses a shadow-graphic technique to determine the dimensions and numbers of particles moving in a flow field. The system is digital in nature. Particles pass through a collimated laser beam and are imaged onto a linear array by a coaxial lens. The array is composed of the exposed ends of a fiber optics bundle which serves as a link between the array plane and the sensing photo-detector modules. Being an imaging device, it can measure a wide range of particle sizes through the proper selection of optics. Sizes ranging from 2 to 1500 micrometers have been measured in the course of this project. Comparisons of holographic data of a liquid rocket injector and of water spray nozzles are made with the fiber optics system.

Subject Categories:

  • Fluid Mechanics
  • Fiber Optics and Integrated Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE