Results 1 to 10 of about 5,045,034 (354)

Mercury’s Internal Structure [PDF]

, 2018
We describe the current state of knowledge about Mercury's interior structure. We review the available observational constraints, including mass, size, density, gravity field, spin state, composition, and tidal response. These data enable the construction of models that represent the distribution of mass inside Mercury.
Margot, JL, Hauck, SA, Mazarico, E, Padovan, S, Peale, SJ   +4 more
openaire   +8 more sources

Effects of Ammonium Perchlorate and CL-20 on Agglomeration Characteristics of Solid High-Energy Propellants

Energies, 2022
Energy density, which is an important indicator of the performance of solid propellants, is known to increase with the addition of 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane (CL-20).
Xiang Lv, Rong Ma, Yuxin An, Zhimin Fan, Dongliang Gou, Peijin Liu, Wen Ao   +6 more
doaj   +1 more source

Thermal interactions between hybrid HMX/ANPyO cocrystals and commonly used propellant ingredients

Energetic Materials Frontiers, 2022
Nitramine-based composite propellants (N-CPs) are receiving significant attention in the field of solid rocket propulsion. Cyclotetramethylene tetranitramine (HMX)/2,6-diamino-3,5-dinitropyridine-1-oxide (ANPyO) cocrystals are a novel insensitive ...
Zhi-hua Xue, Zi-kangping Wang, Rui-xuan Xu, Xue-xue Zhang, Qi-long Yan   +4 more
doaj   +1 more source

Thermal Analyses of Active-Cooled Strut in RBCC Engine [PDF]

Xibei Gongye Daxue Xuebao, 2018
Fuel-injection strut is an efficient way to increase the depth of fuel penetration and strengthen the mixing process of hot gas in supersonic combustor.

doaj   +1 more source

The effect of Al/oxidizers interfacial structure on the mechanical properties of composite propellants

Polymer Testing, 2023
In this paper, the mechanical properties of a typical four-component composite solid propellants with various designed Al/oxidizer interfaces have been studied.
Xiang Lv, Jiaxing Xu, Ruixuan Xu, Wuxi Xie, Qazi Wasiullah, Qi-Long Yan   +5 more
doaj   +1 more source

Condensed Combustion Products Characteristics of HTPB/AP/Al Propellants under Solid Rocket Motor Conditions

Aerospace, 2022
Condensed combustion products (CCPs) generated during the combustion of aluminized propellants can reflect invaluable information about the combustion mechanisms of propellants.
Xue-Li Liu, Song-Qi Hu, Lin-Lin Liu, Yan Zhang   +3 more
doaj   +1 more source

Experimental and numerical studies on the spray cooling of deionized water in non-boiling regime

Case Studies in Thermal Engineering, 2023
High-efficiency spray cooling technology has received increase of interest for high heatflux applications. Experimental and numerical investigations on spray heat transfer in single-phase deionized water are reported in this paper. The 3D numerical model
H. Wan, P.J. Liu, G.Q. He, Z.R. Xue, F. Qin, W.Q. Li   +5 more
doaj   +1 more source

A Phenomenological Model for the Unsteady Combustion of Solid Propellants from a Zel’dovich-Novzhilov Approach

Aerospace, 2023
Solid rocket motors are prone to combustion instabilities, which may lead to various problems for the rockets, from unexpected oscillations, precision decreasing, to explosion.
Zhuopu Wang, Wenchao Zhang, Yuanzhe Liu
doaj   +1 more source

Agglomerate Size Evolution in Solid Propellant Combustion under High Pressure

Aerospace, 2023
Solid propellant combustion and flow are significantly affected by condensed combustion products (CCPs) in solid rocket motors. A new aluminum agglomeration model is established using the discrete element method, considering the burning rate and ...
Songchen Yue, Lu Liu, Huan Liu, Yanfeng Jiang, Peijin Liu, Aimin Pang, Guangxue Zhang, Wen Ao   +7 more
doaj   +1 more source

The Confirmation of Thermal Boundary Parameters in an Oxygen Kerosene Fuel-Rich Rocket Engine

Aerospace, 2022
The thermal environment is an important factor in the design of liquid rockets. In this paper, theoretical analysis, numerical simulation and experimental testing are conducted to study the boundary thermal characteristics of a GOX/kerosene liquid rocket
Xianggeng Wei, Zhongxu Yang, Shaohua Zhu, Zhixin Zhao, Jinying Ye, Oskar J. Haidn   +5 more
doaj   +1 more source