This article presents one of the key approaches to "increasing the efficiency of propellant" by regulation the grain velocity of the initial particles of propellant by absorbing camphor on their surfaces (phlegmatic propellant). | Regulation of burning speed for the granules of high energy materials in military field (singlebased propellant) using absorption of camphor methods Vietnam Journal of Science and Technology 56 (2A) (2018) 51-55 REGULATION OF BURNING SPEED FOR THE GRANULES OF HIGH ENERGY MATERIALS IN MILITARY FIELD (SINGLE- BASED PROPELLANT) USING ABSORPTION OF CAMPHOR METHODS Pham Quang Hieu1, *, Pham Van Toai1, Chu Chien Huu2, Duong Ngoc Co1 1 Institute of Propellants and Explosives, 192 Duc Giang Str, Long Bien District, Ha Noi 2 Institute of Chemistry and Materials, 17 Hoang Sam Str, Cau Giay District, Ha Noi * Email: hieuphus@ Received: 15 March 2018; Accepted for publication: 14 May 2018 ABSTRACT As launchers for artillery weapon, grains were used that have energy in military equipment (also known as the single-based propellant). Each type of artillery weapon has a special requirement for muzzle velocity and pressure in which for the ammunition used for weapon with long barrel and high power, the term "increasing the efficiency of propellant" means, it is extremely important to improve the muzzle velocity of the projectile while maintaining maximum pressure in the barrel. This article presents one of the key approaches to "increasing the efficiency of propellant" by regulation the grain velocity of the initial particles of propellant by absorbing camphor on their surfaces (phlegmatic propellant). Keywords: efficiency of propellant, phlegmatic propellant, absorbing camphor. 1. INTRODUCTION The speed of projectile is clearly showed throwing the internal ballistics. Relating of parameters of maximum throwing speed Vmax, muzzle velocity Vo and characteristics of the artillery fire are [1]: 2 f V max * * (1) m L 2S Vo * Pd (l ) (2) m 0 where: m- the projectile mass, kg; φ- coefficient of supposed, θ- coefficient of adiabatic, f- force of propellant, , ω- propellant mass,
