Results 11 to 20 of about 14,938 (340)

Green Hypergolic Ionic Liquids: Future Rocket Propellants

open access: yesJournal of Ionic Liquids, 2022
Hydrazine and its derivatives have been used as standard propellants for spacecraft propulsion systems since the 1960s, despite being highly toxic and carcinogenic. The propellant synthesis community has constantly been looking for green alternatives for
Umakant Swami   +2 more
doaj   +2 more sources

Development of Green Bi-Propellant Stage

open access: greenSSRN Electronic Journal, 2022
Gino P. Joy, Sujithkumar R, Geetha S.
openaire   +2 more sources

Experimental Research into an Innovative Green Propellant Based on Paraffin–Stearic Acid and Coal for Hybrid Rocket Engines [PDF]

open access: goldInventions
This study focuses on an innovative green propellant based on paraffin, stearic acid, and coal, used in hybrid rocket engines. Additionally, lab-scale firing tests were conducted using a hybrid rocket motor with gaseous oxygen as the oxidizer, utilizing ...
Grigore Cican   +5 more
doaj   +2 more sources

Combustion Characteristics of HAN-based Green Propellant Assisted with Nanoporous Active Carbons

open access: diamondEurasian Chemico-Technological Journal, 2017
Combustion of hydroxylammonium nitrate (95 wt.% HAN) ‒ water solution in presence of high specific surface area activated carbons is investigated in a constant-pressure bomb within the pressure range of 1‒6 MPa.
M. K. Atamanov   +6 more
doaj   +3 more sources

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

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

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

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