Results 21 to 30 of about 1,546,701 (274)

Investigation on the foaming behaviors of NC-based gun propellants

open access: yesDefence Technology, 2014
To prepare the porous NC-based (nitrocellulose-based) gun propellants, the batch foaming process of using supercritical CO2 as the physical blowing agent is used.
Yu-xiang Li, Wei-tao Yang, San-jiu Ying
doaj   +1 more source

Effects of 2CL-20/HMX cocrystals on the thermal decomposition behavior and combustion properties of polyether solid propellants

open access: yesEnergetic Materials Frontiers, 2021
Herein, the effects of cocrystals of two nitroamine explosives, namely hexanitrohexaazaisowurtzitane (CL-20) and 1,3,5,7-tetranitro-1,3,5,7-tetrazoctane (HMX), which are denoted as CHC, on the combustion properties, heat release, and safety profiles of ...
Shui-ping Zhou   +4 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

CFD modelling of solid propellant ignition [PDF]

open access: yes, 1996
Solid propellant is the highly energetic fuel burnt in the combustion chamber of ballistic weapons. It is manufactured, for this purpose, in either granular or stick form.
Lowe, C.
core   +7 more sources

The energy potential of some hypothetical nitrosubstituted tetrazoles derivatives [PDF]

open access: yesОмский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение", 2018
The energy abilities of solid composite propellants based on some nitrosubstituted tetrazole derivatives, which are still hypothetical but they are promising for create on their basis rather powerful propellants, have been considered.
I. Yu. Gudkova, D. B. Lempert
doaj   +1 more source

ADN Solid Propellants with High Burning Rates as Booster Material for Hypersonic Applications

open access: yes, 2022
RAM- and SCRAM-Jet engines can not generate static thrust and only work at high speeds. This starting velocity of the motor v0 is usually generated by carrier rockets or boosters, which mostly use solid propellants based on ammonium perchlorate (AP) and ...
Fischer, Sebastian   +5 more
core   +1 more source

Combustion Behaviour of ADN-Based Green Solid Propellant with Metal Additives: A Comprehensive Review and Discussion

open access: yesAerospace
Solid propellants play a crucial role in various civil, scientific, and defence-related aerospace propulsion applications due to their efficient energy release, high energy density, low fabrication cost, and ease of operation.
Rushikesh Kore, Ashish Vashishtha
doaj   +1 more source

Preliminary research of composite rocket propellants with hexogen and titanium oxide powder [PDF]

open access: yesScientific Technical Review, 2018
Composite solid propellants based on ammonium perchlorate/hydroxyl-terminated polybutadiene/isophorone dyisocyanate including two levels of hexogen (RDX) are presented in this paper. The mass of RDX increased in relation to oxidant, with constant bimodal
Rodić Vesna   +3 more
doaj  

Propellant Chemistry

open access: yesCHIMIA, 2004
A systematic overview of the different types of solid propellants, their chemical compositions, characteristics and practical applications is given.
Patrick Folly, Peter Mäder
doaj   +1 more source

Artificial molecular machines and motors—Design and control of nanoscale motion

open access: yesFEBS Letters, EarlyView.
Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley   +1 more source

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