Results 41 to 50 of about 1,179 (158)

Investigation of Combustion Performance of Hypergolic Ionic Liquid Fuels Through Injector Design

Aerospace
Hypergolic ionic liquid fuels are promising alternatives to the toxic hydrazine-based propellants. The present study investigates the combustion performance of a fuel composed of 1-ethyl-3-methylimidazolium thiocyanate ([EMIM][SCN]) and copper(I ...
Vikas Khandu Bhosale, Keonwoong Lee, Vincent Mario Pierre Ugolini, Hosung Yoon   +3 more
doaj   +1 more source

Dynamics of electrically controlled propellant valves for “green”-propellant thrusters

Technical mechanics
Recently, the leading space countries have paid much attention to searching for and using new types of untoxic “green” propellants. Developments of 0.1 N to 220 N “green”-propellant thrusters have been reported, and some of them have been successfully tested in flight conditions.
openaire   +1 more source

State-of-the-art Advances in the Ignition Selay Reduction of N,N-dimethylethanamine

Medžiagotyra
Propellant is a core fuel in defense and aerospace applications. However, conventional hydrazine fuel is highly volatile, toxic, and carcinogenic, resulting in huge threats to the human body and environment. N,N-dimethylethanamine (DMAZ) is a green, high-
Minna GAO, Zhiyong HUANG, Ying JIA, Guofeng JIN, Yuanzheng HUANG, Keke SHEN   +5 more
doaj   +1 more source

Enhanced thermal performance and hydrochloric acid gas (HCl) emission mitigation in ammonium perchlorate (AP)-Based solid propellants with potassium permanganate (KMnO4)/AP dual oxidisers

Atmospheric Environment: X
The conventional propellant used in rocket boosters and tactical missiles commonly utilises ammonium perchlorate (AP). However, the release of harmful chloride fumes resulting from the combustion of AP during rocket launches contributes to a 1 % increase
Izzat Najmi Yaacob, Ezanee Gires, Adi Azrif Basri, Kamarul Arifin Ahmad, Kamsani Kamal, Nor Afizah Salleh, Suraya Shahedi, Fikri Rasih, Zakwan Azizi, Sharul Sham Dol, Norkhairunnisa Mazlan   +10 more
doaj   +1 more source

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

Defence 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

Design and Analysis of a Micro–Electro-Mechanical System Thruster for Small Satellites and Low-Thrust Propulsion

Aerospace
As a cost-effective and versatile solution, small satellites are increasingly being considered for space exploration. However, one of the major challenges in deploying small satellites for high total impulse missions, particularly deep space exploration,
Yubin Zhong, Fabrizio Ponti, Francesco Barato, Guojun Xia, Siyu Li, Xiao Zhang, Tao Wu   +6 more
doaj   +1 more source

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

Eurasian 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. The linear burning rate increased for the
M. K. Atamanov, R. Amrousse, J. Jandosov, K. Hori, A. R. Kerimkulova, D. I. Chenchik, B. Y. Kolesnikov   +6 more
doaj   +1 more source

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

Materials (Basel), 2021
Kang S, Kwon S.
europepmc   +1 more source

Effect of the distant position of a propellant valve on the startup delay of a “green”-propellant thruster

Technical mechanics
In recent years, the leading space countries have paid much attention to a search for and the application of new toxically safe propellants for spacecraft thrusters. A water solution of an ion substance, a fuel, and a stabilizer is used as a “green” propellant. Its feature is a significant increase in the temperature in the thruster reaction chamber in
Yu.V. Knyshenko, V.I. Shcherbakov
openaire   +1 more source

Development of Green Bipropellant Thrusters and Engines Using 98% Hydrogen Peroxide as Oxidizer

Aerospace
The need for non-toxic chemical propulsion systems is growing stronger in today’s space sector. One of the possible solutions for next-generation bipropellant systems is using hydrogen peroxide as the oxidizer.
Adam Okninski, Pawel Surmacz, Kamil Sobczak, Wojciech Florczuk, Dawid Cieslinski, Aleksander Gorgeri, Bartosz Bartkowiak, Dominik Kublik, Michal Ranachowski, Zbigniew Gut, Adrian Parzybut, Anna Kasztankiewicz, Jacek Mazurek, Ferran Valencia Bel, Armin Herbertz, Kate Underhill, Dirk Schneider, Andreas Flock   +17 more
doaj   +1 more source