Bengi Ezgi Çelik Fidancı1, Taner Atalar1, Ali Fatih Zeybek1, Halil Ipek1
1 Defence Industries Research and Development Institute (TÜBİTAK SAGE), Ankara, Turkey
Abstract. The present investigation scrutinizes the uniaxial tensile test characteristics of composite propellant formulations based on Hydroxyl-Terminated Polybutadiene/Ammonium Perchlorate (HTPB/AP), specifically designed for deployment in base bleed units for artillery projectiles. The base bleed unit functions by injecting low-velocity hot gas from the projectile's base, generated through the combustion of a low-burning rate composite propellant. This injection serves to eliminate the formation of a low-pressure zone and consequently reduces base drag, thereby facilitating an extension in range. The study systematically explores the influence of varying ratios of additives, including cross-linker (Triethanolamine, TEA), chain extender (1,4-Butanediol, 1,4-BD), and bonding agent (TEPANOL), as well as diverse particle size distributions of Ammonium Perchlorate (AP), on the mechanical properties of the HTPB/AP-based propellant formulations. Through this investigation, the aim is to ascertain the relative changes in mechanical behavior to meet the requisite properties for the development of an efficient HTPB/AP-based composite propellant for base bleed units.
Keywords: base bleed; propellant; ammonium perchlorate; mechanical properties; HTPB
| ID: 43, Contact: Bengi Ezgi Çelik Fidancı, bengi.celik@tubitak.gov.tr | NTREM 2024 |