Experimental investigation of star grains in dual thrust solid propellant motors
El-Naggar, M., Belal, H., Abdalla, H. (2020). Experimental investigation of star grains in dual thrust solid propellant motors. EKB Journal Management System, 19(19th International Conference on Applied Mechanics and Mechanical Engineering.), 1-18. doi: 10.1088/1757-899X/973/1/012001
M El-Naggar; H Belal; H M Abdalla. "Experimental investigation of star grains in dual thrust solid propellant motors". EKB Journal Management System, 19, 19th International Conference on Applied Mechanics and Mechanical Engineering., 2020, 1-18. doi: 10.1088/1757-899X/973/1/012001
El-Naggar, M., Belal, H., Abdalla, H. (2020). 'Experimental investigation of star grains in dual thrust solid propellant motors', EKB Journal Management System, 19(19th International Conference on Applied Mechanics and Mechanical Engineering.), pp. 1-18. doi: 10.1088/1757-899X/973/1/012001
El-Naggar, M., Belal, H., Abdalla, H. Experimental investigation of star grains in dual thrust solid propellant motors. EKB Journal Management System, 2020; 19(19th International Conference on Applied Mechanics and Mechanical Engineering.): 1-18. doi: 10.1088/1757-899X/973/1/012001

Experimental investigation of star grains in dual thrust solid propellant motors

The International Conference on Applied Mechanics and Mechanical Engineering
Volume 19, 19th International Conference on Applied Mechanics and Mechanical Engineering., July 2020, Page 1-18  XML PDF (1.93 MB)
Document Type: Original Article
DOI: 10.1088/1757-899X/973/1/012001
View on SCiNiTO View on SCiNiTO
Authors
M El-Naggar1; H Belal2; H M Abdalla3
1M.Sc. Student, Rocket Department, Military Technical College, Egypt.
2Assistant Professor, Rocket Department, Military Technical College, Egypt.
3Associate Professor. Rocket Department, Military Technical College, Egypt.
Abstract
One of the great challenges in designing tactical solid missiles is to achieve high acceleration in the boost phase then maintaining constant speed during the sustain phase. This could be achieved by using a dual thrust solid-propellant rocket motor. Many of these tactical motors use a combination of star, tubular or finocyl grains to achieve this profile. The present study uses two tandem star grains with different design parameters and different transition geometry. Previous researches had consistently shown that the main advantage of star grain is the potential higher volumetric loading in addition to high tailorability. The pressure-time curve for the designed grains is calculated using a zero-dimensional internal ballistic module and a small-scale test motor is used to verify the calculated pressure-time curve. Different transition geometries are compared. Tapered transition is shown to give a comparable performance with the sharp
transition with the advantage of higher volumetric loading.
Statistics
Article View: 41
PDF Download: 64