Results 21 to 30 of about 1,895 (230)

Amine-AlH<sub>3</sub> Adducts as Energetic Materials for a New Generation of Solid Fuels. [PDF]

open access: yesChemistry
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   +4 more
europepmc   +2 more sources

Burning Characteristics of Ammonium-Nitrate-Based Composite Propellants with a Hydroxyl-Terminated Polybutadiene/Polytetrahydrofuran Blend Binder

open access: yesInternational Journal of Aerospace Engineering, 2012
Ammonium-nitrate-(AN-) based composite propellants prepared with a hydroxyl-terminated polybutadiene (HTPB)/polytetrahydrofuran (PTHF) blend binder have unique thermal decomposition characteristics.
Makoto Kohga   +2 more
doaj   +1 more source

Correlation between solid propellant failure and interface debonding in solid rocket motors

open access: yesPolymer Testing, 2022
In the traditional integrity analysis of solid rocket motors, solid propellants failure and propellant-liner interface debonding were intentionally differentiated. This empirical distinction of failure regions based on the macroscopic phenomenon neglects
Ming Lei   +6 more
doaj   +1 more source

Combustion performance studies of aluminum and boron based composite solid propellants in sub-atmospheric pressure regimes

open access: yesPropulsion and Power Research, 2019
The aim of present study is to investigate the burning rate, ignition delay, and flame characteristics of ammonium perchlorate (AP)-hydroxyl terminated poly-butadiene (HTPB) [AP/HTPB] based composite propellants (CSP's) in sub-atmospheric pressure ...
Pratim Kumar   +2 more
doaj   +1 more source

Preparation and Characterization of Al/HTPB Composite for High Energetic Materials

open access: yesNanomaterials, 2020
Nanosized Al (nAl) powders offer increased reactivity than the conventional micron-sized counterpart, thanks to their reduced size and increased specific surface area.
Alexander Vorozhtsov   +5 more
doaj   +1 more source

Effect of spherical Al-Mg-Zr on the combustion characteristics of composite propellants

open access: yesFirePhysChem, 2022
In this work, spherical Al-Mg-Zr alloy with intensive heat release were characterized and compared to neat Al powders. The morphology, element distribution and thermal performance were characterized by TEM, SEM, Mapping and TG-DSC.
Zhao Qin   +9 more
doaj   +1 more source

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

open access: yesAIP 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   +5 more
doaj   +1 more source

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

open access: yesPolymer 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   +5 more
doaj   +1 more source

Application of artificial neural networks for the prediction of aluminium agglomeration processes

open access: yesInternational Journal of Aviation, Aeronautics, and Aerospace, 2018
Aluminium is universal and vital constituent in composite propellants and typically used to improve performance. Aluminum agglomeration takes place on the burning surface of aluminized propellants, which leads to reduced combustion efficiency and 2P flow
TEJASVI K   +3 more
doaj   +1 more source

Biaxial compression mechanical properties of HTPB propellant under dynamic loading

open access: yesAIP 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   +4 more
doaj   +1 more source

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