An Ammonia Microresistojet (MRJ) for Micro satellites

Robin, Michael; Brogan, T.R.; Cardiff, Eric H.

doi:10.2514/6.2008-5288

Cited by 8 publications

(4 citation statements)

References 2 publications

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“…Results showed that flame speeds were modest for all mixtures where the oxygen percentage was 39% or less. Microthrusters for propulsion of small space vehicles, fueled with ammonia and acetylene have been studied and developed in Russia, China, and USA [30,31]. Although the technology is promising, literature on micropropulsion systems using ammonia as a fuel is still scarce, opening the possibilities for further research.…”

Section: Ammoniamentioning

confidence: 99%

Recent Combustion Strategies in Gas Turbines for Propulsion and Power Generation toward a Zero-Emissions Future: Fuels, Burners, and Combustion Techniques

et al. 2021

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The effects of climate change and global warming are arising a new awareness on the impact of our daily life. Power generation for transportation and mobility as well as in industry is the main responsible for the greenhouse gas emissions. Indeed, currently, 80% of the energy is still produced by combustion of fossil fuels; thus, great efforts need to be spent to make combustion greener and safer than in the past. For this reason, a review of the most recent gas turbines combustion strategy with a focus on fuels, combustion techniques, and burners is presented here. A new generation of fuels for gas turbines are currently under investigation by the academic community, with a specific concern about production and storage. Among them, biofuels represent a trustworthy and valuable solution in the next decades during the transition to zero carbon fuels (e.g., hydrogen and ammonia). Promising combustion techniques explored in the past, and then abandoned due to their technological complexity, are now receiving renewed attention (e.g., MILD, PVC), thanks to their effectiveness in improving the efficiency and reducing emissions of standard gas turbine cycles. Finally, many advances are illustrated in terms of new burners, developed for both aviation and power generation. This overview points out promising solutions for the next generation combustion and opens the way to a fast transition toward zero emissions power generation.

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Section: Ammoniamentioning

confidence: 99%

Recent Combustion Strategies in Gas Turbines for Propulsion and Power Generation toward a Zero-Emissions Future: Fuels, Burners, and Combustion Techniques

et al. 2021

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“…those which are developed or developing) for CubeSats, which might be also applicable to microsats. This review study elaborated on the operating principle, design considerations, and technologies of different thrusters, including cold gas propulsion systems, 78 liquid propulsion systems, 79 solid rocket propulsion systems, 80 resistojets, 81 radio-frequency ion thrusters, 82 Hall-effect propulsion systems, 83,84 electrospray propulsion systems, 85 pulse plasma thrusters, 86 and solar sails. 87 Development level of current state-of-the-art propulsion systems for microsats is still relatively low.…”

Section: Propulsive Devicementioning

confidence: 99%

Developments of attitude determination and control system of microsats: A survey

Ma²,

Guo

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part I:

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This study surveys the developments in satellite attitude determination and control system, especially for microsats. This survey is not intended to be complete but is limited to the most significant developments of sensors, actuators, and algorithms in the last two decades. First, attitude determination methods including algorithms and sensors together with actuator-based control methods are introduced. Furthermore, current problems in alignment error, flexible satellites, and low redundancy of microsats attitude determination and control system are discussed. Moreover, developments of some deep-neural-networks-based methods, which have great potential in solving current problems, are summarized.

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“…For instance, laboratory experiments have shown exit temperatures of 600-1050 • C for methanol and 300-1175 • C for ammonia propellants [49]. The heating process reduces the gas (propellant) flow rate from a given upstream pressure through a given nozzle area, thus leading to the increase in specific impulse that is proportional to the square root of temperature as depicted in Equation (11) [50].…”

Section: Operating Principlementioning

confidence: 99%

An Overview of Cube-Satellite Propulsion Technologies and Trends

2017

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CubeSats provide a cost effective means to perform scientific and technological studies in space. Due to their affordability, CubeSat technologies have been diversely studied and developed by educational institutions, companies and space organizations all over the world. The CubeSat technology that is surveyed in this paper is the propulsion system. A propulsion system is the primary mobility device of a spacecraft and helps with orbit modifications and attitude control. This paper provides an overview of micro-propulsion technologies that have been developed or are currently being developed for CubeSats. Some of the micro-propulsion technologies listed have also flown as secondary propulsion systems on larger spacecraft. Operating principles and key design considerations for each class of propulsion system are outlined. Finally, the performance factors of micro-propulsion systems have been summarized in terms of: first, a comparison of thrust and specific impulse for all propulsion systems; second, a comparison of power and specific impulse, as also thrust-to-power ratio and specific impulse for electric propulsion systems.

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An Ammonia Microresistojet (MRJ) for Micro satellites

Cited by 8 publications

References 2 publications

Recent Combustion Strategies in Gas Turbines for Propulsion and Power Generation toward a Zero-Emissions Future: Fuels, Burners, and Combustion Techniques

Recent Combustion Strategies in Gas Turbines for Propulsion and Power Generation toward a Zero-Emissions Future: Fuels, Burners, and Combustion Techniques

Developments of attitude determination and control system of microsats: A survey

An Overview of Cube-Satellite Propulsion Technologies and Trends

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