Results 31 to 40 of about 12,705 (201)

Research on the Aging Properties of HTPB Propellant under Vacuum

Journal of Physics: Conference Series, 2023
Abstract The space environment has high vacuum, rapid temperature alternations and other extreme conditions, which can affect the energy, ignition rate and ignition performance of solid propellants in the space environment. In order to obtain the space aging performance of HTPB propellant, this paper investigates the aging performance of
Yuqing Tang, Wenhe Liao, Hanyu Deng, Cheng Chen   +3 more
openaire   +1 more source

Strain-rate correlation of biaxial tension and compression mechanical properties of HTPB and NEPE propellants

AIP Advances, 2022
An effective biaxial tension and compression test method is proposed based on the shortcomings of current research for the mechanical properties of solid propellants under complex stress states.
Qizhou Wang, Guang Wang, Zhejun Wang, Hongfu Qiang, Xueren Wang, Shudi Pei   +5 more
doaj   +1 more source

Characterization of aging behavior of butacene® based composite propellants by loss factor curves

, 2022
S.712-723Butacene® is a polymeric binder with ferrocenyl groups chemically bonded to HTPB backbone. Through incorporation in the AP−Al composite propellant formulation, it leads to high burning rates (BR) >20 mm/s at 7 MPa, and low ...
Seyidoglu, Tijen, Bohn, Manfred
core   +1 more source

Modeling of diffusion and premixed flame of AP/HTPB laminate propellant [PDF]

Progress in Propulsion Physics, 2009
Composite propellants feature a diusion §ame. The size of oxidizer particlesleveragesomecombustionproperties(mainly,burningrateand pressure sensitivity) along with §ame structure. Macroscopic combus- tion features are strictly related to those events occurringinside the gas phase and close to the burning surface.
MAGGI, FILIPPO, DE LUCA, LUIGI, COLOMBO, GIOVANNI, BANDERA, ALESSIO, GALFETTI, LUCIANO   +4 more
openaire   +3 more sources

Effects of Nano-Sized Al on the Combustion Performance of Fuel Rich Solid Rocket Propellants

Eurasian Chemico-Technological Journal, 2016
Several industrial- and research – type fuel rich solid rocket propellants containing nano-metric aluminum metal particles, featuring the same nominal composition, were prepared and experimentally analyzed.
W.Q. Pang, F. Q. Zhao, L. T. DeLuca, C. Kappenstein, H. X. Xu, X. Z. Fan   +5 more
doaj   +1 more source

Architecting nano‐Al/HMX/CuO energetic micro‐units unlocks superior interface and highly efficient combustion

InfoMat, EarlyView.
Improving the dispersion of nano‐aluminum is of great importance in explosives and propellants. The spherical Al/HMX/CuO energetic micro‐units were prepared using microchannel technology, which significantly improved the uniformity and dispersion of nano‐Al. It also enhanced the mass and heat transfer efficiency between the fuel and oxidizer components,
Gazi Hao, Tianxu Xi, Yong Kou, Cheng Zhang, Ronghuan Yang, Jiahao Yu, Qiangqiang Lu, Hongyu Yang, Chong Chen, Lei Xiao, Jun Di, Fengqi Zhao, Wei Jiang   +12 more
wiley   +1 more source

Properties of high cis-1,4 content hydroxyl-terminated polybutadiene and its application in composite solid propellants

Defence Technology
In this paper, high cis-1,4 content hydroxyl-terminated polybutadiene (cis-HTPB) with different molecular weights was prepared through the oxidative cracking process using cis-butadiene rubber as raw material.
Deqian Meng, Lipeng Sang, Pingan Zhang, Jianru Deng, Xiang Guo   +4 more
doaj   +1 more source

Screening Surface Modifications to Benzene to Improve Solubility in Hydroxyl‐Terminated Polybutadiene (HTPB)—A DFT Demonstration

Propellants, Explosives, Pyrotechnics, EarlyView.
ABSTRACT The objective of this paper is to demonstrate the advantage of computationally pre‐screening surface‐modifying material candidates, using density functional theory (DFT), to inform experimental synthesis and formulation efforts. This demonstration focuses on improving the solubility of benzene‐based materials in hydroxyl‐terminated ...
Samantha E. Knoth
wiley   +1 more source

Biaxial compression mechanical properties of HTPB propellant under dynamic loading

AIP Advances, 2022
To study the biaxial compression mechanical properties of hydroxyl-terminated polybutadiene (HTPB) solid propellants under dynamic loading, biaxial compression tests were carried out at room temperature (25 °C) with the strain rate ranging from 1 to 85 s−
Tingjing Geng, Hongfu Qiang, Zhejun Wang, Xueren Wang, Chunguo Yue   +4 more
doaj   +1 more source

Combustion characteristics of cross-linked fluorinated polymer supported aluminum/oxidizer microsphere in HTPB propellant

FirePhysChem, 2022
Combustion behaviors of propellant depend heavily on the architecture of the pocket bounded by coarse AP particles. In order to achieve a better control of the meso-scale architecture of the pocket, overcoming random mixing of the fine particles inside ...
Tianfu Zhang, Nan Yao, Chongyang Zhou, Yang Li, Yanpeng Zhao, Aimin Pang, Shixi Wu   +6 more
doaj   +1 more source