Publications

Multi-Color Pyrometry of High-speed Ejecta from Pyrotechnic Igniters

Halls, Benjamin R.; Swain, William E.; Stacy, Shawn C.; Marinis, Ryan T.; Kearney, S.P.

A high-speed, two-color pyrometer was developed and employed to characterize the temperature of the ejecta from pyrotechnic igniters. The pyrometer used a single objective lens, beamsplitter, and two high-speed cameras to maximize the spatial and temporal resolutions. The pyrometer used the integrated intensity of under-resolved particles to maintain a large region of interest to capture more particles. The spectral response of the pyrometer was determined based on the response of each optical component and the total system was calibrated using a black body source to ensure accurate intensity ratios over the range of interest.