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Performance of a green propellant thruster with discharge plasma
Acta Astronautica, 2017Abstract A discharge plasma was applied to initiate the combustion of a hydroxylammonium nitrate-based propellant as a substitute for the catalysts that are typically employed. The resulting thrust and thrust-to-power ratio during short interval firing tests as well as the chamber pressure with a single pulse discharge were evaluated.
Asato Wada +2 more
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Hydroxylammonium nitrate—the next generation green propellant
2022Wai Siong Chai +2 more
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Making Progress Towards «Green» Propellants
Propellants, Explosives, Pyrotechnics, 2018AbstractStabilisers are used in propellants to prevent the various effects such as oxidation, chain scission, energy loss and uncontrolled heat generation that are caused by homolytic and heterolytic cleavage of the weakest Nitrogen‐Oxygen bond of the nitrate ester functional group.
Alain Dejeaifve +3 more
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Green Propellants Perspectives for Future Missions
44th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2008Many upper stages and spacecrafts use MMH / NTO for the propulsive manoeuvres. For low and medium delta V operations, a low cost space storable propellant couple could be selected e.g. N2O / propane or propylene. LOX / light hydrocarbon combinations offer superior Isp and are well suited for higher delta V requirements like planetary orbit insertion or
Yves Maisonneuve +4 more
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Propeller efficiency options for green ship
Proceedings of 2012 9th International Bhurban Conference on Applied Sciences & Technology (IBCAST), 2012Environmental issues and rising fuel prices necessitate better energy-efficiency in all sectors. Shipping industry is one of the stakeholders in environmental issues. Shipping industry is responsible for 3 % of global CO 2 emissions, 14–15 % of global NO X emissions and 16 % of global SO X emissions.
Salma Sherbaz, null Wenyang Duan
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Gelled hydrogren peroxide for green propellants
2010Nearly pure hydrogen peroxide with less than 1% water was gelled using 15 to 25% polyvinyl-pyrrolidon (PVP) resulting in stable mono-propellants with reliable rheological properties and sensitivity parameters better than nitromethane according to drop hammer and friction. Maximum vacuum specific impulse was calculated to 2750 Ns/kg.
Weiser, Volker +4 more
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Fusing of Seven HBCs toward a Green Nanographene Propeller
Journal of the American Chemical Society, 2019This work presents a green chiral nanographene propeller (NP), which is built by fusing seven hexabenzocoronenes in a helical arrangement. It contains 258 conjugated carbon atoms and represents the largest three-dimensional conjugated polycyclic aromatic hydrocarbons ever prepared using scalable solution chemistry.
Yanpeng Zhu +3 more
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Ignition Test of Bi-Propellant Propulsion System Based on Green Propellants for Microsatellite
47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2011Purpose of microsatellites under 50kg-class development, is now becoming to practical and more complicated mission. At the same time, propulsion system for the microsatellites tends to be eagerly desired for their missions with orbit transfer. Therefore, we considered chemical propulsion is very suitable for the microsatellites and started to develop ...
Nobuyoshi Suzuki, Hironori Sahara
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2018
Friendly or green compositions are being sought in many kinds of applications, such as fertilization, building materials, energy generation, and so on. Thus, this classification (green) can be established after the subjection of the compound to a thorough toxicity study.
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Friendly or green compositions are being sought in many kinds of applications, such as fertilization, building materials, energy generation, and so on. Thus, this classification (green) can be established after the subjection of the compound to a thorough toxicity study.
openaire +1 more source
Selection and Characterization of Green Propellants for Micro-Resistojets
Journal of Heat Transfer, 2017The number of launches of nano- and pico-satellites has significantly increased over the past decade. Miniaturized subsystems, such as micropropulsion, for these classes of spacecraft are rapidly evolving and, in particular, micro-resistojets have shown great potential of applicability.
Daduí C. Guerrieri +3 more
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