Experimental investigation of solid rocket motors for small sounding rockets

8th TSME-International Conference on Mechanical Engineering

Suksila, Thada^1

Advanced Propulsions and Rockets Lab, Department of Mechanical and Aerospace Engineering, Faculty of Engineering, King Mongkut's University of Technology North Bangkok, 1518 Pracharat Sai 1 Rd., Wongsawang, Bangsue, Bangkok

10800, Thailand^1

关键词: Basic designs;    Combustion chamber walls;    Design and construction;    Experimental investigations;    Heat transfer analysis;    Maximum thrust;    Propellant configurations;    Solid rocket motors;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/297/1/012009/pdf
DOI  :  10.1088/1757-899X/297/1/012009

来源: IOP

【 摘 要 】

Experimentation and research of solid rocket motors are important subjects for aerospace engineering students. However, many institutes in Thailand rarely include experiments on solid rocket motors in research projects of aerospace engineering students, mainly because of the complexity of mixing the explosive propellants. This paper focuses on the design and construction of a solid rocket motor for total impulse in the class I-J that can be utilised as a small sounding rocket by researchers in the near future. Initially, the test stands intended for measuring the pressure in the combustion chamber and the thrust of the solid rocket motor were designed and constructed. The basic design of the propellant configuration was evaluated. Several formulas and ratios of solid propellants were compared for achieving the maximum thrust. The convenience of manufacturing and casting of the fabricated solid rocket motors were a critical consideration. The motor structural analysis such as the combustion chamber wall thickness was also discussed. Several types of nozzles were compared and evaluated for ensuring the maximum thrust of the solid rocket motors during the experiments. The theory of heat transfer analysis in the combustion chamber was discussed and compared with the experimental data.