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Showing 1 to 16 of 16 for “"Micropropulsion"”.
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FILM EVAPORATION MEMS THRUSTER ARRAY FOR MICROPROPULSION
Current small sat propulsion systems require a substantial mass fraction of the vehicle involving tradeoffs between useful payload mass and maneuverability. This is also an issue with available attitude control systems which are either quickly saturated reaction wheels or movable high drag surfaces …
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Micropropulsion system selection for precision formation flying satellites
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2001.
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Development of a High Performance Micropropulsion System for CubeSats
Picosatellites are defined as satellites with a mass between 0.1 and 1kg (Miniaturized satellite). Picosatellites are typically designed to work together or function in formations (Miniaturized satellite). A specific type of Picosatellite known as CubeSats were introduced in 1999 and since then …
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Analysis, fabrication and testing of a MEMS-based micropropulsion system
… nozzle. These results suggest that MEMS-based micropropulsion systems offer higher performance at lower mass, when operated at Reynolds numbers above 2500 for both heated and unheated thrusters.
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Structure and performance of carbon xerogel molded emitters for micropropulsion applications
Ion electrospray propulsion relies on the transport of propellant to emission sites where ions and/or droplets are extracted to create thrust. The focus of this research is the creation of porous emitter substrates through which the liquid is passively transported. Previous substrates were created …
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Design Principles and Preliminary Testing of a Micropropulsion Electrospray Thruster Research Platform
<p>The need for micropropulsion solutions for spacecraft has been steadily increasing as scientific payloads require higher accuracy maneuvers and as the use of small form-factor spacecraft such as CubeSats becomes more common. Of the technologies used for this purpose, electrospray thrusters offer …
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Particle modeling of non-equilibrium field emission driven RF microplasmas
… have been investigated for active flow control, micropropulsion and electronic display applications to name a few. The operational voltages for these microplasmas are on the order of kilovolts. When the electric field at the electrodes reaches GV/m or tens of GV/m either due to reduced …
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Electrochemistry of room temperature ionic Liquids with applications to electrospray propulsion
… for technological advancements in space-based micropropulsion, focused ion beam, energy storage, and other research and industrial applications. As a family of concentrated electrolytes, RTIL electrochemical properties deviate from classical theories whose mean-field approach glossed over …
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Characterization of ion Cluster fragmentation in ionic liquid ion sources
Ion electrospray propulsion is a cutting-edge micropropulsion technology that could revolutionize the capabilities of microsatellites. Ion electrospray thrusters could also be used on large spacecraft for precision attitude control applications such as gravity wave detection and exoplanet imaging. …
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Design, fabrication, and characterization of a MEMS steam-generating device based on the decomposition of high-test hydrogen peroxide
… be used for microrocket thrust generation in micropropulsion applications. In this thesis, the design, fabrication, testing, and successful demonstration of the MEMS steam generator are presented. The device consists of a mixing section for the peroxide and catalyst streams, a reactor section …
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On the identification and mitigation of life-limiting mechanisms of ionic liquid ion sources envisaged for propulsion of microspacecraft
… and other industrial applications. Micropropulsion in particular has received considerable interest in recent years due to the increasing utility of and demand for small satellites and the services they provide. A passively-fed, porous ILIS system which includes the ion thruster …
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Electromagnetic formation flight of satellite arrays
… to benchmark its performance against various micropropulsion systems. Finally the use of electromagnets for multiple roles in space systems is discussed.
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Nanotermites multicamadas de Al/NiO sintetizadas por Magnetron Sputtering
… in a compact source, with potential uses in micropropulsion for space devices, controlled ignition systems for ammunition firing, among other applications.
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Electrode Geometry Effects in an Electrothermal Plasma Microthruster
… fueling this expansion is the creation of micropropulsion systems. One such system, originally developed at the Australian National University (ANU), is an electrothermal plasma thruster known as Pocket Rocket (PR). This device heats neutral propellant gas by exposing it to a Capacitively …
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Studies on the physical structure, properties and operation of ionic liquid electrosprays in the pure-ion mode
… mode exhibit compelling characteristics for micropropulsion, such as the ability to achieve high specific impulses with high efficiency. Liquid metal and ionic liquid-based electrospray sources are the most well-established types that operate in this mode. Understanding the emission physics …
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Development of Safety Standards for CubeSat Propulsion Systems
<p>The CubeSat community has begun to develop and implement propulsion systems. This movement represents a new capability which may satisfy mission needs such as orbital and constellation maintenance, formation flight, de-orbit, and even interplanetary travel. With the freedom and capability …