Results 21 to 30 of about 1,588 (287)

The design and performance on 200N-class bipropellant rocket engine using decomposed H2O2 and Kerosene [PDF]

open access: yesINCAS Bulletin, 2019
Mono-propellant thrusters are widely utilized in satellites and space launchers. In many cases, they are using hydrazine as a propellant. However, hydrazine has high toxicity and high risks in using for launch campaign.
Yang-Suk LEE, Jun Hwan JANG
doaj   +1 more source

Rocket Solid Propellant Alternative Based on Ammonium Dinitramide [PDF]

open access: yesINCAS Bulletin, 2017
Due to the continuous run for a green environment the current article proposes a new type of solid propellant based on the fairly new synthesized oxidizer, ammonium dinitramide (ADN).
Grigore CICAN, Alexandru-Daniel MITRACHE
doaj   +1 more source

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

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

GreenRAIM - Promising Green Propellants – A Trade-Off

open access: green
The GreenRAIM study investigates the suitability of green chemical propellants for future space transportation missions through a comprehensive trade-off analysis. The study spans a wide range of mission scenarios from Earth observation, kick stages, servicers, interplanetary transfers up to landers, and evaluates both heritage and emerging propellants.
Birk Wollenhaupt
openalex   +2 more sources

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

Quantitative Clarification of Stable Ignition Region for HKP110 Green Hypergolic Bipropellant

open access: yesAerospace, 2022
As a candidate for a green hypergolic bipropellant, the combination of highly concentrated hydrogen peroxide and fuel with dissolved sodium borohydride has been widely studied.
Keigo Hatai, Taiichi Nagata
doaj   +1 more source

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