Accession Number:

ADA179665

Title:

Application of Atomic Fluorescence to Measurement of Combustion Temperature in Solid Propellants.

Descriptive Note:

Final rept. 1 Aug 84-31 Jul 86,

Corporate Author:

SYSTEMS RESEARCH LABS INC DAYTON OH

Personal Author(s):

Report Date:

1986-12-04

Pagination or Media Count:

66.0

Abstract:

A method has been developed for nonintrusive collection of surface-temperature data from reactive and nonreactive surfaces. The method relies on the temperature sensitivity of the laser-induced fluorescence of a rare-earth ion which has been seeded into the material under study. The rare-earth ion dysprosium doped into a crystal yttrium-aluminum-garnet is shown to be an ideal seed, the fluorescence of which is stimulated by the ultra -violet output of a NdYAG laser. The fluorescence of the crystal is collected by a linear-array detector, analyzed, and stored for evaluation. Calibration of this method has been made from 300 to 1673 K. Tests have been conducted on reactive and nonreactive surfaces. Additionally, a technique for obtaining temperature depth profiles of reactive materials has been developed, and test results are shown. Keywords Surface Temperature, Laser Induced Fluorescence, Thermography, Solid Rocket Propellants, Rare Earth Ions, Nonintrusive Optical Diagnostics, Thermographic Imaging, Temperature Depth Profiling, High Spatial Resolution, Temporal Resolution, Reactive Surfaces.

Subject Categories:

  • Solid Rocket Propellants

Distribution Statement:

APPROVED FOR PUBLIC RELEASE