Results 11 to 20 of about 1,871 (299)

Kinetic Stability and Propellant Performance of Green Energetic Materials [PDF]

open access: yesChemistry – A European Journal, 2010
AbstractA thorough theoretical investigation of four promising green energetic materials is presented. The kinetic stability of the dinitramide, trinitrogen dioxide, pentazole, and oxopentazole anions has been evaluated in the gas phase and in solution by using high‐level ab initio and DFT calculations.
Martin, Rahm, Tore, Brinck
openaire   +3 more sources

Preparation and Performance Evaluation of Platinum Barium Hexaaluminate Catalyst for Green Propellant Hydroxylamine Nitrate Thrusters. [PDF]

open access: yesMaterials (Basel), 2021
Spacecraft have monopropellant thruster systems for attitude control in the vacuum of space. Hydroxylamine nitrate is a green propellant that has high performance and low toxicity.
Kang S, Kwon S.
europepmc   +2 more sources

Evaluating New Liquid Storable Bipropellants: Safety and Performance Assessments

open access: yesAerospace, 2022
Conventional storable bipropellants make use of hydrazine and its derivatives as fuels and nitrogen tetroxide as an oxidizer. In recent years, the toxicity character of these chemicals pushed the propulsion community towards “green” alternatives. Several
Stefania Carlotti, Filippo Maggi
doaj   +1 more source

Development of POLON—A Green Microsatellite Propulsion Module Utilizing 98% Hydrogen Peroxide

open access: yesAerospace, 2022
The following paper presents the key design and test activities associated with the development of POLON—a green microsatellite propulsion module using 98% Hydrogen Peroxide (HTP).
Jakub Gramatyka   +7 more
doaj   +1 more source

Contamination assessment of a freely expanding green propellant thruster plume [PDF]

open access: yes, 2023
A number of propellant/thruster combinations are under development in recent years that aim to replace the prevailing hydrazine-driven reaction control thrusters with less hazardous substances (green propellants).
Buntrock, Leonie Johanna   +5 more
core   +1 more source

Effect of Combustion Chamber Geometrical Parameters on the Decomposition and Combustion Characteristics of an ADN-Based Thruster

open access: yesMicromachines, 2022
In this paper, numerical simulations were used to study the decomposition and combustion processes inside the 0.2 N-class ADN-based thruster, and the effects of two geometrical parameters (length and diameter) of the combustion chamber on the combustion ...
Yangyang Hou   +3 more
doaj   +1 more source

Impact of Hydrogen Peroxide Concentration on Manganese Oxide and Platinum Catalyst Bed Performance

open access: yesAerospace, 2023
This study investigates the use of MnxOy/Al2O3 and Pt/Al2O3 catalysts for the decomposition of hydrogen peroxide in thrusters. It describes the purpose, procedures, performance, and conclusions coming from the test campaign of the catalyst lifetimes.
Adrian Parzybut   +2 more
doaj   +1 more source

Design, Fabrication, and Test of a Cryogenic Liquid Oxygen-Ethanol Engine [PDF]

open access: yesفصلنامه علوم و فناوری فضایی, 2022
The aim of the present research is to obtain the ability to use the cryogenic propellant engines on a laboratory scale. In this regard, it is necessary to build some experimental motors and investigate the their performance parameters.
Hojat Ghasemi   +5 more
doaj   +1 more source

Parameters Influencing the Characteristic Exhaust Velocity of a Nitrous Oxide/Ethene Green Propellant [PDF]

open access: yes, 2022
Currently, several green propellants are under investigation to replace the toxic and carcinogenic monopropellant hydrazine (N2H4). Beside alternatives as ammonium dinitramide-based propellants, hydroxylammonium nitrate-based mixtures, or high ...
Werling, Lukas, Bätz, Patrick
core   +1 more source

Emission Characteristics of NOx During the Combustion of Waste Energetic Materials [PDF]

open access: yesE3S Web of Conferences, 2023
A large amount of NOx will be produced during the combustion process of waste energetic materials (EMs), which is extremely harmful to human health and ecological environment, and has become an urgent problem for all countries to solve.
Wang ShouYu, Jin GuoRui, He WeiDong
doaj   +1 more source

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