Methods for Improving Mechanical Properties of Composite Solid Propellants
Aprilia Fitri Yastuti (a*, b), Ariadne L. Juwono (a), Heru Supriyatno (b), Dwi Setyaningsih (b), Yulia Azatil Ismah (b), Arbela Dani Budisusilo (b)

a) Departement of Physics, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Depok, 16424, Indonesia
*aprilia.fitri[at]ui.ac.id- apri012[at]brin.go.id
b) Research Center for Rocket Technology, National Research and Innovation Agency, Bogor, 16350, Indonesia

Abstract

Research and development of solid rockets have been actively conducted in Indonesia since the 1960s, both for civilian and defence purposes. One of the main focuses in enhancing solid rocket performance is the improvement of composite solid propellants used as fuel. A key factor influencing the performance of these propellants is the mechanical properties of the propellant grains. This paper presents a review of various studies that have investigated methods to enhance the mechanical characteristics of composite solid propellants, including modifications to binder systems, oxidizer formulations, and the use of specific additives. The reviewed literature highlights a range of strategies aimed at improving performance and reducing the risk of mechanical failure. Despite notable progress, several challenges remain in translating these findings into practical applications. The review also identifies knowledge gaps and suggests potential directions for future research to develop more robust and mission-specific propellant formulations.

Keywords: Composite solid propellant, Mechanical properties, Propellant grain, Rocket performance, Binder optimization, Additives, Solid rocket development

Topic: Material Physics