[Study on flame temperature measurement of pyrotechnics using multi-spectral thermometer]

Area of Science:

• Pyrotechnics
• Combustion diagnostics
• Optical thermometry

Context:

• Accurate measurement of pyrotechnics flame temperature is crucial for understanding combustion processes.
• Traditional thermometry methods may face challenges in dynamic and high-temperature environments.
• Analysis of radiation spectrum offers a non-intrusive approach to temperature determination.

Purpose:

• To design and validate a multi-spectral thermometer system for pyrotechnics flame analysis.
• To investigate the working principle of multi-spectral thermometry in combustion diagnostics.
• To establish a foundation for researching pyrotechnics combustion output characteristics.

Summary:

• A transient spectrum radiometer was employed to analyze the radiation spectrum of pyrotechnics' burning flame.
• A twelve-channel multi-spectral thermometer system was developed, integrating optics, electronics, data acquisition, and processing.
• The system's efficacy was demonstrated by measuring the emissive power and calculating the temperature-time curve of black powder flame.

Impact:

• The developed multi-spectral thermometer system proves effective for measuring pyrotechnics flame temperatures.
• This research provides a robust method for analyzing flame emissive power and temperature dynamics.
• Lays the groundwork for advanced studies on the combustion output characteristics of pyrotechnic materials.