Results 11 to 20 of about 1,895 (230)

Research on curing reaction kinetics and curing process of hydroxy-terminated polybutadiene (HTPB) propellants. [PDF]

Sci Rep
Hydroxyl-terminated polybutadiene (HTPB) propellants are high-performance solid propellants widely used in aerospace and military applications. By combining experimental and theoretical approaches, the curing process was analyzed using differential ...
Guo Z, Wang Y, Chiumenti M, Wu Y, Zhen S, Liu H, Rossi R, Fu X.   +7 more
europepmc   +2 more sources

First applications of ultrasound technology in solid rocket propellant combustion promotion. [PDF]

Ultrason Sonochem
The regulation of propellant combustion using ultrasonic waves is proposed. Under ultrasonic frequencies of 25–40 kHz, we systematically examined the combustion characteristics of Al particles, ammonium perchlorate (AP)/hydroxyl-terminated polybutadiene (
Wen Z, Jing H, Hao F, Wang Y, Kuang B, Liu P, Ao W.   +6 more
europepmc   +2 more sources

Preliminary Study on Characteristics of NC/HTPB-Based High-Energy Gun Propellants

ChemEngineering, 2022
This study mainly explored the characteristics of NC/HTPB-based high-energy gun propellants with RDX, CL-20 or TKX-50 by experimental method. Three series of test samples were prepared referring to the formulation of M1 single-base gun propellant (M1 SBP)
Yi-Hsien Lin, Tsung-Mao Yang, Jin-Shuh Li, Kai-Tai Lu, Tsao-Fa Yeh   +4 more
doaj   +1 more source

Effect of fast-burning compound ACP and catalyst on the combustion performance of Al/Mg-based fuel-rich HTPB propellants

FirePhysChem, 2022
In order to solve the problem of weak injection of fuel-rich propellant and to enhance its burning rate, the combustion behaviors of Al/Mg-based fuel-rich HTPB propellants with 40wt% metal content were studied with and without the addition of fast ...
Han Shi, Jiaqi Ren, Weiqiang Tang, Jianmin Li, Rongjie Yang   +4 more
doaj   +1 more source

Thermolysis and sensitivities of solid propellants using characterized nano oxidizers involving energy performance evaluation

FirePhysChem, 2022
This investigation was devoted to exploring the thermal decomposition and sensitivity characteristics of solid propellants using nano-AN and nano-AP as oxidizers.
Xiaolan Song, Xiaohui Gao, Yong Kou, Zhihong Yu, Yi Wang, Chongwei An, Fengsheng Li   +6 more
doaj   +1 more source

Effect of hexanitroethane (HNE) and hydrazinium nitroformate (HNF) on energy characteristics of composite solid propellants

FirePhysChem, 2021
This work deals with energy performance calculate results of new solid composite propellants based on Hexanitroethane (HNE) and Hydrazinium nitroformate (HNF).
Li-nan Zhang, Qun-qing Lin, Ben-duan Cheng, Peng-cheng Wang, Ming Lu, Qiu-han Lin   +5 more
doaj   +1 more source

Study on the interfacial interaction between ammonium perchlorate and hydroxyl-terminated polybutadiene in solid propellants by molecular dynamics simulation

e-Polymers, 2022
The interfacial interaction between the main oxidant filler ammonium perchlorate (AP) and hydroxyl-terminated polybutadiene (HTPB) matrix in AP/HTPB propellants were studied via an all-atom molecular dynamics simulation.
Dong Ge, Liu Hengzhi, Deng Lei, Yu Haiyang, Zhou Xing, Tang Xianqiong, Li Wei   +6 more
doaj   +1 more source

A Viscometric study of mixtures with Hydroxyl-terminated polybutadiene (HTPB) and short chain diols used in the formulations of solid composite propellants

Anais da Academia Brasileira de Ciências, 2021
Hydroxyl-terminated polybutadiene (HTPB) is widely used in the formulations of solid propellants used in rocket motors. Furthermore, in general, chain extenders and short chain diols, such as 1,4-butanediol and 1,2-propanediol, can also be used in ...
BRUNO C.C. DA CUNHA, MARCELA G. DOMINGUES, JOSÉ A.F.F. ROCCO   +2 more
doaj   +1 more source

Combustion and mechanical properties enhancement strategy based on stearic acid surface activated boron powders. [PDF]

Sci Rep
Boric acid and other impurities on the surface of boron (B) particles can interact with hydroxyl-terminated polybutadiene (HTPB), weakening the mechanical properties and energy release efficiency of boron-based solid rocket propellants.
Lu J, Chen C, Zhang B, Niu K, Xiao F, Liang T.   +5 more
europepmc   +2 more sources

Evolution of structural damage of solid composite propellants under slow heating and effect on combustion characteristics

Journal of Materials Research and Technology, 2023
Composite propellants are used to fabricate solid motors for space vehicles. The fundamental factor that affects motor safety is the structural damage in the propellant owing to slow heating in an abnormal storage or service environment.
Jianxin Nie, Jiahao Liang, Haijun Zhang, Yu Zou, Qingjie Jiao, Yingjun Li, Xueyong Guo, Shi Yan, Yanli Zhu   +8 more
doaj   +1 more source