Results 11 to 20 of about 52,081 (256)

Uniaxial tensile mechanical behavior research of HTPB propellant under wide temperature and confining pressure

AIP Advances, 2023
To investigate the effects of confining pressure, strain rates, and temperatures on the mechanical properties of the Hydroxyl-terminated Polybutadiene (HTPB) propellant, uniaxial tensile tests were performed utilizing wide-temperature-confining pressure ...
Chuntao Li, Haiyang Li, Weijing Wu, Wei Li, Aimin Pang   +4 more
doaj   +2 more sources

Research on microscopic structure–activity relationship of AP particle–matrix interface in HTPB propellant

e-Polymers
The matrix and particle interface of hydroxyl-terminated polybutadiene (HTPB) propellant is the weakest part of its mechanical properties, making it prone to dewetting damage and destroying the structural integrity of the propellant.
Zou Zijie, Qiang Hongfu, Zhou Junhong, Zhang Fengtao, Wang Xueren, Li Yiyi   +5 more
doaj   +2 more sources

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   +2 more sources

Investigations of the mechanical response of dummy HTPB propellant grain under ultrahigh acceleration overload conditions using onboard flight-test measurements

Defence Technology, 2023
In this paper, to study the mechanical responses of a solid propellant subjected to ultrahigh acceleration overload during the gun-launch process, specifically designed projectile flight tests with an onboard measurement system were performed.
Yiming Zhang, Ningfei Wang, Weihua Ma, Ran Wang, Long Bai, Yi Wu   +5 more
doaj   +2 more sources

Maximum elongation degradation model and service life prediction for HTPB propellant under constant strain and chemical aging effects

Polymer Testing
To accurately predict the service life of the hydroxy-terminated polybutadiene (HTPB) propellant, in this study, we constructed a maximum elongation degradation model that comprehensively considers physical damage and chemical aging effects. Specifically,
Tingjing Geng, Hongfu Qiang, Heyang Miao, Xueren Wang, Zhejun Wang, Huimin Zhang   +5 more
doaj   +2 more sources

Biaxial tensile test and meso damage numerical simulation of HTPB propellant. [PDF]

Sci Rep, 2022
Aiming at the shortcomings of the current research on the mechanical properties of solid propellants under complex stress conditions, an effective cross-shaped test piece configuration and variable-scale biaxial tensile test method are designed in this ...
Wang Q, Wang G, Wang Z, Qiang H, Wang X, Li S, Zhu Z.   +6 more
europepmc   +2 more sources

Dynamic Mechanical Response and Damage Mechanism of HTPB Propellant under Impact Loading. [PDF]

Materials (Basel), 2020
The dynamic mechanical behaviors of Hydroxyl-terminated polybutadiene (HTPB) propellant was studied by a split Hopkinson pressure bar apparatus (SHPB) at strain rates ranging from 103 to 104 s−1.
Zhang H, Liu M, Miao Y, Wang H, Chen T, Fan X, Chang H.   +6 more
europepmc   +2 more sources

Effect of Al–Li Alloy on the Combustion Performance of AP/RDX/Al/HTPB Propellant

Aerospace, 2023
Aluminium–lithium alloy (Al–Li alloy) powder has excellent ignition and combustion performance. The combustion product of Al–Li alloy powder combined with ammonium perchlorate is gaseous at the working temperature of solid rocket motors, which greatly ...
W. Xiong, Yunjie Liu, Tianfu Zhang, Shixi Wu, Dawen Zeng, Xiang Guo, Ai-min Pang   +6 more
semanticscholar   +1 more source

Amine-AlH₃ Adducts as Energetic Materials for a New Generation of Solid Fuels. [PDF]

Chemistry
New amine‐AlH₃ adducts offer a more environmentally friendly, high‐energy alternative to conventional rocket propellants, and exhibit ultra‐fast ignition. They can be synthesized by mechanochemical method under hydrogen pressure starting from aluminum metal directly or by wet chemical processes with AlH3.
Liu X, Ortmeyer J, Bodach A, Petersen H, Felderhoff M.   +4 more
europepmc   +2 more sources

Effect of Mechanical Heterogeneity on the Structural Integrity of HTPB Propellant Grain

Materials, 2023
To investigate the structural effects of the mechanical heterogeneity of Hydroxyl-terminated polybutadiene (HTPB) propellant grain under ignition pressurization, a gradient finite element method was proposed to evaluate its structural integrity.
Xiang‐Yang Liu, Bu-qing Hui, Hui Wang, Hang Chen, Dongmo Zhou   +4 more
semanticscholar   +1 more source