Lifetime Considerations for Electrospray Thrusters
نویسندگان
چکیده
منابع مشابه
Fabrication and Characterization of Porous Metal Emitters for Electrospray Thrusters
A repeatable method based on conventional micro fabrication techniques for creating sharpened emitters from porous tungsten has been explored. A laboratory demonstration thruster comprised of 49 of these porous tungsten emitters has been built and tested. The demonstration device operates on the electrostatic field evaporation of ions from ionic liquids. The emitters are contained in three line...
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Performance scaling in pulsed inductive thrusters is discussed in the context of previous experimental studies and modeling results. Two processes, propellant ionization and acceleration, are interconnected where overall thruster performance and operation are concerned, but they are separated here to gain physical insight into each process and arrive at quantitative criteria that should be met ...
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Molecular dynamics (MD) simulations are performed to model an electrospray thruster for the ionic liquid (IL) EMIM−BF 4 using an effective-force coarse-grained (CG) potential. The MD simulations provide insight into the atomistic modeling of a capillary-tip-extractor system, the basic elements of an electrospray thruster. A one-dimensional electric field showed an improvement in the model when ...
متن کاملComparing Direct and Indirect Thrust Measurements from Passively Fed and Highly Ionic Electrospray Thrusters
Highly ionic beams of several hundred μA per cm 2 have been measured from porous glass ionic liquid electrospray sources fabricated using a conventional mill. The thrust output from three prototype devices, two emitting the ionic liquid EMI-Im and one emitting EMI-BF 4, was measured directly using a precise balance. Thrusts up to 50 μN were measured when emitting EMI-Im in a bipolar, alternatin...
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ژورنال
عنوان ژورنال: Aerospace
سال: 2020
ISSN: 2226-4310
DOI: 10.3390/aerospace7080108