Results 21 to 30 of about 9,673 (305)

Burn rate of a novel boron-AN-water green solid propellant

open access: yesFirePhysChem, 2022
A novel composition of green solid rocket propellant has been suggested and examined. Boron powder was chosen to serve as fuel, for its very high energetic potential, which exceeds that of other common metals, as well as that of fossil fuels.
Adi Zamostianu, Yinon Yavor
doaj   +1 more source

An overview on properties, thermal decomposition, and combustion behavior of ADN and ADN based solid propellants

open access: yesDefence Technology, 2018
Ammonium dinitramide [NH4N(NO2)2, ADN] is considered as a possible replacement for ammonium perchlorate (AP) in nearly all kind of solid rocket propulsions in the coming future. The reason to use ADN instead of AP in solid rocket propulsion is because of
Pratim Kumar
doaj   +1 more source

Impulse mechanical strength improvement of alumina by surface coating

open access: yesCailiao gongcheng
To increase the impulse mechanical strength of alumina, the pore structure of alumina was modified by surface coating. It was found that the impulse mechanical strength of alumina samples coated with aluminum chloride increases from 35 MPa to 51 MPa and ...
CHEN Zhiqiang   +5 more
doaj   +1 more source

Shock Induced Decomposition and Sensitivity of Energetic Materials by ReaxFF Molecular Dynamics [PDF]

open access: yes, 2006
We develop strain-driven compression-expansion technique using molecular dynamics (MD) with reactive force fields (ReaxFF) to study the impact sensitivity of energetic materials.
Dasgupta, S.   +4 more
core   +1 more source

Initial research on thermal decomposition of 98% concentrated hydrogen peroxide in thruster-like conditions

open access: yesEngineering Science and Technology, an International Journal, 2022
The current research is focused on investigating the possibility of harnessing the thermal decomposition of highly concentrated Hydrogen Peroxide 98% i.e., utilizing a decomposition process initiated and maintained solely by a temperature source for low ...
Lukasz Mezyk   +4 more
doaj   +1 more source

Successful development of HAN based green propellant

open access: yesEnergetic Materials Frontiers, 2021
Research and development of Hydroxyl Ammonium Nitrate based liquid propellant; SHP-163 is reviewed. Starting from the composition selection of the propellant to the development of 1 ​N thruster of Green Propellant Reaction Control System (GPRCS) project and the successful demonstration test in space is summarized.
Toshiyuki Katsumi, Keiichi Hori
openaire   +2 more sources

Green Propellant Loading Demonstration at U.S. Range [PDF]

open access: yes52nd AIAA/SAE/ASEE Joint Propulsion Conference, 2016
The Green Propellant Loading Demonstration (GPLD) was conducted December 2015 at Wallops Flight Facility (WFF), leveraging work performed over recent years to bring lower toxicity hydrazine replacement green propellants to flight missions. The objective of this collaboration between NASA Goddard Space Flight Center (GSFC), WFF, the Swedish National ...
Henry Mulkey   +2 more
openaire   +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

Studies on the flame propagation characteristic and thermal hazard of the premixed N2O/fuel mixtures

open access: yesDefence Technology, 2020
An experimental study was carried out to investigate the flame propagation and thermal hazard of the premixed N2O/fuel mixtures, including NH3, C3H8 and C2H4.
Yu-yan Li   +5 more
doaj   +1 more source

The clinical effectiveness and cost-effectiveness of inhaler devices used in the routine management of chronic asthma in older children: a systematic review and economic evaluation [PDF]

open access: yes, 2002
Background: This review examines the clinical effectiveness and cost-effectiveness of hand-held inhalers to deliver medication for the routine management of chronic asthma in children aged between 5 and 15 years.
Beverley, C.   +4 more
core   +1 more source

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